Study of the features of compaction of powder composite materials based on molybdenum using spark plasma sintering

Khudnev A.A., Batienkov R.V., Bolshakova A.N., Dvoretskov R.M.
UDC
620.18:621.762
DOI
10.18577/2307-6046-2022-0-3-64-74
Article PDF (Russian) (1.02 MB)
How to cite
Khudnev A.A., Batienkov R.V., Bolshakova A.N., Dvoretskov R.M. Study of the features of compaction of powder composite materials based on molybdenum using spark plasma sintering // Proceedings of VIAM. 2022. No. 3. DOI: 10.18577/2307-6046-2022-0-3-64-74. URL: https://test.viam.ru/en/journal/2022/3/7
Keywords
spark plasma sintering, mechanical alloying, molybdenum, dispersion-strengthened composite material, powder metallurgy, microstructural analysis
Abstract

Composite dispersion-strengthened materials of the Mo–Ti–Zr–C and Mo–Hf–C systems were investigated in this work. Samples were obtained by powder metallurgy methods using mechanical alloying with subsequent compaction of as-received powder by a spark plasma sintering. It was found that the main strengthening phase in the obtained material of the Mo–Ti–Zr–C system is molybdenum oxide with titanium, zirconium and molybdenum dissolved in it. The material of the Mo–Hf–C system contains two types of reinforcing phase: molybdenum oxides and hafnium oxides. An increase in the sintering temperature by 200 °C did not lead to an increase in the density of materials, but led to the growth of grains and a carbide layer on the surface of the samples.

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