X-ray powder diffraction study of the products of thermobaric treatment of the Re0.67Rh0.33 solid solution

• Published in: Journal of structural chemistry Vol. 49; no. 1; pp. 47 - 52
• Main Authors: Gromilov, S. A., Shubin, Yu. V., Filatov, E. Yu, D’yachkova, T. V., Kireenko, I. B., Tyutyunnik, A. P., Zainulin, Yu. G.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 2008
• Subjects: Atomic; Atomic/Molecular Structure and Spectra; Chemistry; Chemistry and Materials Science; Inorganic Chemistry; Molecular; Optical and Plasma Physics; Physical Chemistry; Solid State Physics; high-pressure chamber; X-ray phase analysis; rhenium; thermal decomposition; microhardness; substitution solid solution; rhodium; carbide
• ISSN: 0022-4766; 1573-8779
• DOI: 10.1007/s10947-008-0007-6

The products of the thermobaric treatment (
P
= 1–4 GPa,
T
= 2000°C) of the ultrafine powder Re
0.67
Rh
0.33
(crystallite size 50 Å) were studied. For one of the products, the (Vickers) microhardness is 1200 kg/mm
2
, which is significantly higher than the literature values for alloys in the Re-Rh system. This effect is attributed to the formation of a binary carbide with an anti-NiAs type of structure.