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Каталог книг и продолжающихся изданий
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Каталог препринтов УрО РАН (1975 г. - )
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Труды сотрудников Института горного дела УрО РАН
Труды сотрудников Института органического синтеза УрО РАН
Труды сотрудников Института теплофизики УрО РАН
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Каталог библиотеки ИЭРиЖ УрО РАН
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1.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Nucleation in ethane–nitrogen solutions. II. Heterogeneous and initiated nucleation [Electronic resource] / V. G. Baidakov, A. S. Pankov // International Journal of Heat and Mass Transfer. - 2015. - Vol. 86. - С. 936-942. - Bibliogr. : p. 942 (18 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
NUCLEATION -- METHOD OF CONTINUOUS PRESSURE LOWERING -- HETEROGENEOUS NUCLEATION -- SUPERHEATING
Аннотация: The method of continuous pressure decrease has been used to investigate limiting (attainable) stretches of ethane–nitrogen solutions. Experiments were conducted at temperatures of 260, 266, 270, and 276 K and at nitrogen concentrations in the solution of 0.5 and 1.5 mol%. Pressure decrease rates were taken in the range 0.01–0.1 MPa/s. Distribution functions of liquid boiling-up events in dependence on pressure have been obtained allowing one to determine the most probable (attainable) pressures of liquid boiling-up and the nucleation rate. The results are interpreted in terms of nucleation thermodynamics and kinetics in liquids on a solid surface containing inclusions that initiate the boiling-up processes. It is shown that for realizing homogeneous nucleation it is not necessarily required that the wettability is close to the ideal one. The reasons for the discrepancy between experimental data and predictions of homogeneous nucleation theory at nucleation rates J < 3 × 106 s−1 m−3 are discussed.

\\\\expert2\\nbo\\International Journal of Heat and Mass Transfer\\2015, v. 86, p.936-942.pdf
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2.
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   B 16

    Baidakov, V. G.
    Nucleation in ethane-nitrogen solutions. I. Homogeneous nucleation [Electronic resource] / V. G. Baidakov, A. S. Pankov // International Journal of Heat and Mass Transfer. - 2015. - Vol. 86. - С. 930-935. - Bibliogr. : p. 935 (32 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CLASSICAL NUCLEATION THEORY -- METHOD OF LIFETIME MEASUREMENT -- ETHANE-NITROGEN SOLUTION
Аннотация: The method of lifetime measurement is used to investigate the kinetics of spontaneous boiling-up of ethane-nitrogen solutions. Superheating temperatures Tn of solutions have been determined in experiments at pressure p = 1.0, 1.6 MPa and nitrogen concentration in ethane x = 0.5, 1.5 mol% in the nucleation rate range J = 1 × 104-2 × 108 s-1 m-3. At J > 3 × 106 s-1 m-3 one can observe a satisfactory agreement between experimental data and homogeneous nucleation theory with respect to the temperature dependence of the nucleation rate and a systematic disagreement in the superheating temperature. At x = 0.5 mol% attainable superheating temperatures achieved by experiment coincide within the experimental error with theoretical values, and at x = 1.5 mol% exceed them by approximately 1.7 K. It is shown that one possible reason of such "excess superheating" of a solution beyond the theoretical value of Tn may be the absence of adsorption equilibrium at the critical bubble-ambient solution interface

\\\\expert2\\nbo\\International Journal of Heat and Mass Transfer\\2015, v. 86, p.930-935.pdf
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3.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Nucleation in ethane–nitrogen solutions. II. Heterogeneous and initiated nucleation [Electronic resource] / V. G. Baidakov, A. S. Pankov // International Journal of Heat and Mass Transfer. - 2015. - Vol. 86. - С. 936-942. - Bibliogr. : p. 942 (18 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
NUCLEATION -- METHOD OF CONTINUOUS PRESSURE LOWERING -- HETEROGENEOUS NUCLEATION -- SUPERHEATING
Аннотация: The method of continuous pressure decrease has been used to investigate limiting (attainable) stretches of ethane–nitrogen solutions. Experiments were conducted at temperatures of 260, 266, 270, and 276 K and at nitrogen concentrations in the solution of 0.5 and 1.5 mol%. Pressure decrease rates were taken in the range 0.01–0.1 MPa/s. Distribution functions of liquid boiling-up events in dependence on pressure have been obtained allowing one to determine the most probable (attainable) pressures of liquid boiling-up and the nucleation rate. The results are interpreted in terms of nucleation thermodynamics and kinetics in liquids on a solid surface containing inclusions that initiate the boiling-up processes. It is shown that for realizing homogeneous nucleation it is not necessarily required that the wettability is close to the ideal one. The reasons for the discrepancy between experimental data and predictions of homogeneous nucleation theory at nucleation rates J < 3 × 106 s−1 m−3 are discussed.

\\\\expert2\\nbo\\International Journal of Heat and Mass Transfer\\2015, v. 86, p.936-942.pdf
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4.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Nucleation in ethane-nitrogen solutions. I. Homogeneous nucleation [Electronic resource] / V. G. Baidakov, A. S. Pankov // International Journal of Heat and Mass Transfer. - 2015. - Vol. 86. - С. 930-935. - Bibliogr. : p. 935 (32 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CLASSICAL NUCLEATION THEORY -- METHOD OF LIFETIME MEASUREMENT -- ETHANE-NITROGEN SOLUTION
Аннотация: The method of lifetime measurement is used to investigate the kinetics of spontaneous boiling-up of ethane-nitrogen solutions. Superheating temperatures Tn of solutions have been determined in experiments at pressure p = 1.0, 1.6 MPa and nitrogen concentration in ethane x = 0.5, 1.5 mol% in the nucleation rate range J = 1 × 104-2 × 108 s-1 m-3. At J > 3 × 106 s-1 m-3 one can observe a satisfactory agreement between experimental data and homogeneous nucleation theory with respect to the temperature dependence of the nucleation rate and a systematic disagreement in the superheating temperature. At x = 0.5 mol% attainable superheating temperatures achieved by experiment coincide within the experimental error with theoretical values, and at x = 1.5 mol% exceed them by approximately 1.7 K. It is shown that one possible reason of such "excess superheating" of a solution beyond the theoretical value of Tn may be the absence of adsorption equilibrium at the critical bubble-ambient solution interface

\\\\expert2\\nbo\\International Journal of Heat and Mass Transfer\\2015, v. 86, p.930-935.pdf
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5.
Инвентарный номер: нет.
   
   F 17

    Faizullin, M. Z.
    Properties of gas hydrates formed by nonequilibrium condensation of molecular beams [Electronic resource] / M. Z. Faizullin, A. V. Vinogradov, V. P. Koverda // High Temperature. - 2014. - Vol. 52, № 6. - С. 830-839. - Bibliogr. : p. 838-839 (36 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
GLASS-TRANSITION -- AMORPHOUS SOLIDS -- AQUEOUS-SOLUTIONS
Аннотация: Low-temperature crystallization of amorphous materials has been analyzed theoretically taking into account nonstationary nucleation. The kinetics of crystallization of amorphous water layers, formed by depositing molecular beams on a substrate cooled by liquid nitrogen, has been investigated by differential thermal analysis. The conditions of gas hydrate formation in low-temperature amorphous-ice layers saturated with carbon dioxide have been studied. The glass-transition and crystallization temperatures of the gas hydrates have been determined from the change in dielectric properties upon heating. Under the deep-metastability conditions, crystallization of water-gas layers leads to the formation of crystallohydrates. Gas molecules are captured by the avalanche-like nucleation of crystallization centers and, therefore, are not displaced by the moving crystal-melt interface. Gas-hydrate samples formed in nonequilibrium water-gas layers are convenient for studying their thermophysical properties

\\\\expert2\\nbo\\High Temperature\\2014, v. 52, N 6, p.830-839.pdf
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6.
Инвентарный номер: нет.
   
   F 17

    Faizullin, M. Z.
    Properties of gas hydrates formed by nonequilibrium condensation of molecular beams [Electronic resource] / M. Z. Faizullin, A. V. Vinogradov, V. P. Koverda // High Temperature. - 2014. - Vol. 52, № 6. - С. 830-839. - Bibliogr. : p. 838-839 (36 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
GLASS-TRANSITION -- AMORPHOUS SOLIDS -- AQUEOUS-SOLUTIONS
Аннотация: Low-temperature crystallization of amorphous materials has been analyzed theoretically taking into account nonstationary nucleation. The kinetics of crystallization of amorphous water layers, formed by depositing molecular beams on a substrate cooled by liquid nitrogen, has been investigated by differential thermal analysis. The conditions of gas hydrate formation in low-temperature amorphous-ice layers saturated with carbon dioxide have been studied. The glass-transition and crystallization temperatures of the gas hydrates have been determined from the change in dielectric properties upon heating. Under the deep-metastability conditions, crystallization of water-gas layers leads to the formation of crystallohydrates. Gas molecules are captured by the avalanche-like nucleation of crystallization centers and, therefore, are not displaced by the moving crystal-melt interface. Gas-hydrate samples formed in nonequilibrium water-gas layers are convenient for studying their thermophysical properties

\\\\expert2\\nbo\\High Temperature\\2014, v. 52, N 6, p.830-839.pdf
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7.
Инвентарный номер: нет.
   
   F 17

    Faizullin, M. Z.
    Formation of clathrate hydrates under crystallization of gas-saturated amorphous ice [Electronic resource] / M. Z. Faizullin, A. V. Vinogradov, V. P. Koverda // International Journal of Heat and Mass Transfer. - 2013. - Vol.65. - С. 649-654. - Bibliogr. : p. 654 (42 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CLATHRATE HYDRATE -- KINETICS -- METHANE
Аннотация: Layers of methane-saturated amorphous ice were obtained by deposition of molecular beams of water and gas on a substrate cooled with liquid nitrogen. Their heating is accompanied by glass transition (softening) and subsequent spontaneous crystallization. The avalanche-type initiation of crystallization centers captures the gas molecules and does not lead to their displacement by the motion of the crystallization front. Under crystallization of amorphous water-gas condensates in conditions of deep metastability the formation of gas hydrates takes place. Glass-transition and crystallization temperatures of the condensates were determined by changes in their dielectric properties under heating. The method of differential thermal analysis has been used to investigate the kinetics of crystallization of amorphous water layers. Properties that characterize the water crystallization kinetics have been determined on the basis of the obtained data on the dependence of the crystallization temperature on the heating rate

\\\\expert2\\NBO\\International Journal of Heat and Mass Transfer\\2013, v.65, p.649-654.pdf
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8.
Инвентарный номер: нет.
   
   K 46

   
    Kinetics of nucleation during the bcc-hcp structural transition in solid helium [Electronic resource] / A. P. Birchenko, Y. O. Vekhov, N. P. Mikhin, E. Y. Rudavskii, V. G. Baidakov // Low Temperature Physics . - 2013. - Vol.39, №6. - P487-492. - Bibliogr. : p. 492 (19 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
NUCLEATION -- SOLID HELIUM -- KINETICS
Аннотация: The nucleation kinetics of the hcp phase in the supercooled bcc phase of solid 4He and a 3He-4He solution containing 1% 3He is studied experimentally. Precision measurements of the pressure in the crystal are made as it is cooled along an isochore near the bcc-hcp phase equilibrium curve. The lifetime of the metastable bcc phase in 4He is found to have a complicated dependence on the level of supercooling which can be described in terms of two nucleation mechanisms-homogeneous and heterogeneous. The homogeneous mechanism occurs for the highly supercooled bcc phase in carefully annealed crystals, while the heterogeneous mechanism, for which the activation coefficients are several orders of magnitude lower than for the homogeneous mechanism, occurs with low supercooling. The influence of defects and impurities on the nucleation process is also studied. In unannealed (defective) 4He crystals the nucleation rate is found to have an enormous scatter, which is indicative of poor reproducibility from one crystal to another. For annealed samples of 3He-4He solution the nucleation kinetics data can be described only by the heterogeneous nucleation mechanism.

\\\\expert2\\NBO\\Low Temperature Physics\\2013, v.39, N 6, p.487-492.pdf
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9.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Attainable superheating of liquefied gases and their solutions (Review Article) [Electronic resource] / V. G. Baidakov // Low Temperature Physics . - 2013. - Vol.39, №8. - P643-664. - Bibliogr. : p. 663-664 (80 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
KINETICS -- BOILING-UP -- QUANTUM NUCLEATION
Аннотация: This review addresses the kinetics of spontaneous boiling-up of liquefied gases and their solutions. It discusses the theories of thermal and quantum nucleation in metastable liquids. The experimental methods for studying the nucleation kinetics are outlined. The experimental data on the attainable superheating temperature for cryogenic liquids and solutions of liquefied gases are presented in a wide range of pressures, including negative ones. The properties of new-phase nuclei near the boundary of attainable superheating are discussed. The kinetics of initiated and heterogeneous nucleation is considered. The experimental data on detection of quantum tunneling of nuclei are presented. The experimental data are compared with the theories of thermal and quantum nucleation

\\\\expert2\\NBO\\Low Temperature Physics\\2013, v.39, N 8, p.643-664.pdf
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10.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Attainable superheating of liquefied gases and their solutions (Review Article) [Electronic resource] / V. G. Baidakov // Low Temperature Physics . - 2013. - Vol.39, №8. - P643-664. - Bibliogr. : p. 663-664 (80 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
KINETICS -- BOILING-UP -- QUANTUM NUCLEATION
Аннотация: This review addresses the kinetics of spontaneous boiling-up of liquefied gases and their solutions. It discusses the theories of thermal and quantum nucleation in metastable liquids. The experimental methods for studying the nucleation kinetics are outlined. The experimental data on the attainable superheating temperature for cryogenic liquids and solutions of liquefied gases are presented in a wide range of pressures, including negative ones. The properties of new-phase nuclei near the boundary of attainable superheating are discussed. The kinetics of initiated and heterogeneous nucleation is considered. The experimental data on detection of quantum tunneling of nuclei are presented. The experimental data are compared with the theories of thermal and quantum nucleation

\\\\expert2\\NBO\\Low Temperature Physics\\2013, v.39, N 8, p.643-664.pdf
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11.
Инвентарный номер: нет.
   
   K 46

   
    Kinetics of nucleation during the bcc-hcp structural transition in solid helium [Electronic resource] / A. P. Birchenko, Y. O. Vekhov, N. P. Mikhin, E. Y. Rudavskii, V. G. Baidakov // Low Temperature Physics . - 2013. - Vol.39, №6. - P487-492. - Bibliogr. : p. 492 (19 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
NUCLEATION -- SOLID HELIUM -- KINETICS
Аннотация: The nucleation kinetics of the hcp phase in the supercooled bcc phase of solid 4He and a 3He-4He solution containing 1% 3He is studied experimentally. Precision measurements of the pressure in the crystal are made as it is cooled along an isochore near the bcc-hcp phase equilibrium curve. The lifetime of the metastable bcc phase in 4He is found to have a complicated dependence on the level of supercooling which can be described in terms of two nucleation mechanisms-homogeneous and heterogeneous. The homogeneous mechanism occurs for the highly supercooled bcc phase in carefully annealed crystals, while the heterogeneous mechanism, for which the activation coefficients are several orders of magnitude lower than for the homogeneous mechanism, occurs with low supercooling. The influence of defects and impurities on the nucleation process is also studied. In unannealed (defective) 4He crystals the nucleation rate is found to have an enormous scatter, which is indicative of poor reproducibility from one crystal to another. For annealed samples of 3He-4He solution the nucleation kinetics data can be described only by the heterogeneous nucleation mechanism.

\\\\expert2\\NBO\\Low Temperature Physics\\2013, v.39, N 6, p.487-492.pdf
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12.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Attainable superheating of liquefied gases and their solutions : review [Electronic resource] / V. G. Baidakov // Fizika Nizkikh Temperatur. - 2013. - Vol.39, №8. - P835-862. - Bibliogr. : p. 861-862 (87 ref)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CAVITATION -- CRYOGENIC LIQUIDS -- META-STABLE STATE
Аннотация: The review is mainly concerned with the kinetics of spontaneous boiling-up of liquefied gases and their solutions. It examines the theories of thermofluctuation and quantum nucleation in metastable liquids. The methods of experimental investigation of nucleation kinetics are given. The experimental data on temperature of attainable superheating of cryogenic liquids and solutions of liquefied gases are presented for a wide range of pressures, including negative ones. The properties of new-phase nuclei near the attainable super-heating boundary are discussed. The kinetics of initiated and heterogeneous nucleation is considered. The experimental data on detection of quantum tunneling of nuclei are given. Experimental data are compared with the theories of thermofluctuation and quantum nucleation

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13.
Инвентарный номер: нет.
   
   K 46

   
    Kinetics of nucleation under bcc-hcp structural transition in solid helium [Electronic resource] / A. P. Birchenko, Y. O. Vekhov, N. P. Mikhin, E. Y. Rudavskii, V. G. Baidakov // Fizika Nizkikh Temperatur. - 2013. - Vol.39, №6. - P627-634. - Bibliogr. : p. 634 (16 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
METASTABLE PHASES -- NUCLEATION -- PHASE TRANSITIONS BCC-HCP
Аннотация: An experimental study of the kinetics of formation of nuclei hcp phase in supercooled bcc phase of solid 4He and 3He-4He solution containing 1% 3He is realised. The method precision measurement of pressure crystal cooled along isochore near the line of phase equilibrium bcc-hcp is used. It's found that in 4He lifetime metastable bcc phase has a complex depend Ence on the magnitude of hypothermia, which can be described with the involvement of two mechanisms of nucleation - homogeneous and heterogeneous. It is shown that at large overcooling bcc phase of carefully annealed crystals homogeneous nucleation mechanism realized, and at low overcooling a heterogeneous mechanism realized, which is characterized by the values of activation coefficients several orders of magnitude less homogeneous. The effect of defects and impurities on the nucleation process is investigated. Revealed that in the unannealed (defective) 4He crystal nucleation rate shows huge variation in the values, indicating poor reproducibility from crystal to crystal. It's found that for the annealed samples 3He-4He data obtained on the nucleation kinetics can be described only by heterogeneous nucleation mechanism

Найти похожие
14.
Инвентарный номер: нет.
   
   F 17

    Faizullin, M. Z.
    Formation of clathrate hydrates under crystallization of gas-saturated amorphous ice [Electronic resource] / M. Z. Faizullin, A. V. Vinogradov, V. P. Koverda // International Journal of Heat and Mass Transfer. - 2013. - Vol.65. - С. 649-654. - Bibliogr. : p. 654 (42 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CLATHRATE HYDRATE -- KINETICS -- METHANE
Аннотация: Layers of methane-saturated amorphous ice were obtained by deposition of molecular beams of water and gas on a substrate cooled with liquid nitrogen. Their heating is accompanied by glass transition (softening) and subsequent spontaneous crystallization. The avalanche-type initiation of crystallization centers captures the gas molecules and does not lead to their displacement by the motion of the crystallization front. Under crystallization of amorphous water-gas condensates in conditions of deep metastability the formation of gas hydrates takes place. Glass-transition and crystallization temperatures of the condensates were determined by changes in their dielectric properties under heating. The method of differential thermal analysis has been used to investigate the kinetics of crystallization of amorphous water layers. Properties that characterize the water crystallization kinetics have been determined on the basis of the obtained data on the dependence of the crystallization temperature on the heating rate

\\\\expert2\\NBO\\International Journal of Heat and Mass Transfer\\2013, v.65, p.649-654.pdf
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15.
Инвентарный номер: нет.
   
   K 46

   
    Kinetics of nucleation under bcc-hcp structural transition in solid helium [Electronic resource] / A. P. Birchenko, Y. O. Vekhov, N. P. Mikhin, E. Y. Rudavskii, V. G. Baidakov // Fizika Nizkikh Temperatur. - 2013. - Vol.39, №6. - P627-634. - Bibliogr. : p. 634 (16 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
METASTABLE PHASES -- NUCLEATION -- PHASE TRANSITIONS BCC-HCP
Аннотация: An experimental study of the kinetics of formation of nuclei hcp phase in supercooled bcc phase of solid 4He and 3He-4He solution containing 1% 3He is realised. The method precision measurement of pressure crystal cooled along isochore near the line of phase equilibrium bcc-hcp is used. It's found that in 4He lifetime metastable bcc phase has a complex depend Ence on the magnitude of hypothermia, which can be described with the involvement of two mechanisms of nucleation - homogeneous and heterogeneous. It is shown that at large overcooling bcc phase of carefully annealed crystals homogeneous nucleation mechanism realized, and at low overcooling a heterogeneous mechanism realized, which is characterized by the values of activation coefficients several orders of magnitude less homogeneous. The effect of defects and impurities on the nucleation process is investigated. Revealed that in the unannealed (defective) 4He crystal nucleation rate shows huge variation in the values, indicating poor reproducibility from crystal to crystal. It's found that for the annealed samples 3He-4He data obtained on the nucleation kinetics can be described only by heterogeneous nucleation mechanism

Найти похожие
16.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Attainable superheating of liquefied gases and their solutions : review [Electronic resource] / V. G. Baidakov // Fizika Nizkikh Temperatur. - 2013. - Vol.39, №8. - P835-862. - Bibliogr. : p. 861-862 (87 ref)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CAVITATION -- CRYOGENIC LIQUIDS -- META-STABLE STATE
Аннотация: The review is mainly concerned with the kinetics of spontaneous boiling-up of liquefied gases and their solutions. It examines the theories of thermofluctuation and quantum nucleation in metastable liquids. The methods of experimental investigation of nucleation kinetics are given. The experimental data on temperature of attainable superheating of cryogenic liquids and solutions of liquefied gases are presented for a wide range of pressures, including negative ones. The properties of new-phase nuclei near the attainable super-heating boundary are discussed. The kinetics of initiated and heterogeneous nucleation is considered. The experimental data on detection of quantum tunneling of nuclei are given. Experimental data are compared with the theories of thermofluctuation and quantum nucleation

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17.
Инвентарный номер: нет.
   
   P 80

    Polukhin, V. A.
    Effect of the character of the (Ni, Pd) cluster/graphene interatomic bonds on the thermosize effects and structural-isomeric transitions [Электронный ресурс] / V. A. Polukhin, E. D. Kurbanova, A. E. Galashev // RUSSIAN METALLURGY. - 2012. - №8. - P696-704
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
COMPREHENSIVE ANALYSIS -- HEATING CONDITIONS -- INTERATOMIC BONDS
Аннотация: The thermal evolution of nanoclusters is studied by molecular dynamics simulation to analyze the nucleation and kinetics of the kinetic processes that determine the basic factors of the onset of premelting and the loss of thermal stability of a two-dimensional system of transition-metal (Pd, Ni) nanoclusters located on a graphene substrate. A comprehensive analysis reveals the effect of the initial structural characteristics of nanoclusters, the heating conditions, and the kinetic factors during thermally activated diffusion on the nanostructuring in the thermal evolution of the nanoclusters. This evolution includes the following stages: isomerization, quasi-melting, and the decomposition of a given regular structure; it is classified as an order-disorder transition and as an analog of phase transitions in macroscopic systems on the nanoscale

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18.
Инвентарный номер: нет.
   
   F 17

    Faizullin, M. Z.
    Vitrification and crystallization of low-temperature amorphous condensates of water and methane-water mixture / M. Z. Faizullin, V. P. Koverda // Russian Journal of Physical Chemistry A. - 2012. - Vol.86, №2. - С. 229-234
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
VITRIFICATION -- CRYSTALLIZATION -- GAS HYDRATES
Аннотация: Low-temperature condensates of water and water-methane mixture are studied in the temperature range of 65-200 K. Amorphous samples are obtained by molecular beam deposition under vacuum conditions on the substrate cooled with liquid nitrogen. The vitrification and crystallization temperatures are determined from the changes in the dielectric properties of the condensates upon heating. The kinetics of crystallization of amorphous water layers is studied by differential thermal analysis. The temperature conditions for the growth of thick methane crystalline hydrate layers during the low-temperature condensation of molecular water-gas mixture beams are found

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19.
Инвентарный номер: нет.
   
   F 17

    Faizullin, M. Z.
    Vitrification and crystallization of low-temperature amorphous condensates of water and methane-water mixture / M. Z. Faizullin, V. P. Koverda // Russian Journal of Physical Chemistry A. - 2012. - Vol.86, №2. - С. 229-234
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
VITRIFICATION -- CRYSTALLIZATION -- GAS HYDRATES
Аннотация: Low-temperature condensates of water and water-methane mixture are studied in the temperature range of 65-200 K. Amorphous samples are obtained by molecular beam deposition under vacuum conditions on the substrate cooled with liquid nitrogen. The vitrification and crystallization temperatures are determined from the changes in the dielectric properties of the condensates upon heating. The kinetics of crystallization of amorphous water layers is studied by differential thermal analysis. The temperature conditions for the growth of thick methane crystalline hydrate layers during the low-temperature condensation of molecular water-gas mixture beams are found

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20.
Инвентарный номер: нет.
   
   B 16

    Baidakov, V. G.
    Nucleation in Liquid Ethane with Small Additions of Metha [Electronic resource] / V. G. Baidakov, A. M. Kaverin, A. S. Pankov // Journal of Physical Chemistry C. - 2012. - Vol.116, №38. - P20458-20464
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
LIQUID -- SPONTANEOUS BOILING-UP -- ETHANE–METHANE SOLUTIONS
Аннотация: The method of measuring the lifetime of a liquid in a metastable (superheated) state has been used to investigate the kinetics of spontaneous boiling-up of ethane–methane solutions. The temperature dependence of the solution mean lifetime has been traced at two values of methane concentration (2.1 and 6.0 mol %) and two pressures (1.0 and 1.6 MPa). The results of experiments are compared with classical homogeneous nucleation theory. For pure ethane at small (<8.9 s) lifetimes, one can observe a systematic “under-heating” (0.5–0.7 K) of the solution against theoretical values of the limiting superheating temperature. Dissolution of 6 mol % of methane in ethane results in a solution “superheating” of 0.7 K in excess of the theoretical value. The slopes of experimental curves at small (<8.9 s) lifetimes are in satisfactory agreement with theory. When the mean lifetimes exceed the value of 8.9 s, one can observe considerable deviations of experimental curves from theoretical lines. The discrepancies are discussed in the context of models of heterogeneous and initiated nuc

\\\\Expert2\\nbo\\Journal of Physical Chemistry C\\2012, v. 116, p.20458.pdf
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