S 90 Study of the Re0.50Rh0.50 products of thermobaric treatment / S. A. Gromilov, T. V. D’yachkova, K. V. Yusenko, I. B. Kireenko, A. P. Tyutyunnik, Yu. G. Zainullin // Journal of Structural Chemistry. - 2009. - Vol. 50, № 2. - P306-311 : il. - Bibliogr. : p. 310-311 (20 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): РОДИЙ -- РЕНИЙ -- МИКРОТВЕРДОСТЬ -- РЕНТГЕНОФАЗОВЫЙ АНАЛИЗ -- ТЕРМОЛИЗ Аннотация: The products of thermobaric treatment of the metastable Re0.50Rh0.50 nanocrystalline phase (a = 2.733(2) Å, c = 4.364(4) Å, space group P63/mmc, CSR ~5 nm) in a high-pressure chamber were studied. Storage of the phase at 2000C and 1.5 GPa for 3 min led to the formation of a fused particle (diam.~1 mm). The initial composition did not change, but the coherent scattering region (CSR) increased to 52 nm. An increase to 4 GPa in pressure also did not lead to a decomposition of the metastable Re0.50Rh0.50 phase, the unit cell parameters remained the same, and the size of the CSR increased by a factor of four Полный текст |