Chemical stability of superhard rhenium diboride at oxygen and moisture ambient environmental conditions prepared by mechanical milling | Zendy

GranadosFitch Mizraim G. | Zendy; QuintanaMelgoza Juan M. | Zendy; JuarezArellano Erick A. | Zendy; AvalosBorja Miguel | Zendy

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Chemical stability of superhard rhenium diboride at oxygen and moisture ambient environmental conditions prepared by mechanical milling

Author(s) -

GranadosFitch Mizraim G.,

QuintanaMelgoza Juan M.,

JuarezArellano Erick A.,

AvalosBorja Miguel

Publication year - 2018

Publication title -

journal of the american ceramic society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.9

H-Index - 196

eISSN - 1551-2916

pISSN - 0002-7820

DOI - 10.1111/jace.15461

Subject(s) - mechanosynthesis , moisture , oxygen , materials science , ambient pressure , rhenium , degradation (telecommunications) , chemical stability , chemical engineering , chemistry , metallurgy , composite material , organic chemistry , thermodynamics , ball mill , telecommunications , physics , computer science , engineering

In this study, rhenium diboride (ReB 2 ) was obtained by mechanosynthesis at 640 minutes of milling. The obtained ReB 2 was stored at oxygen and moisture ambient environmental conditions to know the chemical stability. The results indicate that ReB 2 is totally decomposed at oxygen and moisture ambient environmental conditions. Furthermore, the X‐ray diffraction ( XRD ) analysis of ReB 2 samples after 26 months of storage shows that the final products of degradation are HR eO 4 (liquid), H 3 BO 3 , HBO 2 , and ReO 3 . Finally, a schematic diagram of the degradation sequence of ReB 2 at oxygen and moisture ambient environmental conditions is proposed and validated with a thermodynamic analysis.

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