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Complex boride metal-matrix composites by SHS under high gravity

Complex boride metal-matrix composites by SHS under high gravity

Authors :
V. I. Yukhvid
N. V. Sachkova
D. M. Ikornikov
Vladimir N. Sanin
Source :
International Journal of Self-Propagating High-Temperature Synthesis. 23:151-160
Publication Year :
2014
Publisher :
Allerton Press, 2014.

Abstract

Mo2NiB2 and Mo2FeB2 metal-matrix composites (MMCs) were prepared by metallothermic SHS in a centrifugal machine. Our SEM and XRD data suggest that thus synthesized cast materials represent a ductile Ni or Co matrix doped with uniformly distributed inclusions of Mo2NiB2 or W2CoB2 particles. The metal matrix was found to contain grid-type structural elements formed by nickel aluminides. Addition of alloying agents into a green mixture was found to markedly change the microstructure and morphology of resultant MMCs. The Vickers hardness of synthesized MMCs was found to vary between 950 and 1200 HV.

Details

ISSN :
1934788X and 10613862
Volume :
23
Database :
OpenAIRE
Journal :
International Journal of Self-Propagating High-Temperature Synthesis
Accession number :
edsair.doi...........01aabc3e4ed3601ef6e10d9752a564d2
Full Text :
https://doi.org/10.3103/s1061386214030091