Highly Dispersed Powders in Boride–Silicide Systems

Highly Dispersed Powders in Boride–Silicide Systems

Nanosized composite powders with a composition of titanium diboride–silicides of group IV–VI transition metals are obtained in boride–silicide systems by mechanochemical synthesis for 5–30 min. The initiation effect of TiB 2 on the formation of silicide phases during joint mechanochemical synthesis...

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Bibliographic Details
Published in:Powder metallurgy and metal ceramics Vol. 56; no. 9-10; pp. 487 - 495
Main Authors: Makarenko, G. N., Krushinska, L. A., Timofeeva, I. I., Vasylkivska, M. A., Matsera, V. E., Zyatkevich, D. P., Medukh, V. K., Medukh, R. M., Labunets, V. F., Uvarova, I. V.
Format: Journal Article
Language:English
Published: New York Springer US 2018
Springer
Springer Nature B.V
Subjects:
Bend strength
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Friction resistance
Glass
Intermetallic compounds
Manufacturing Technology
Materials Science
Metallic Materials
Microhardness
Molybdenum disilicides
Natural Materials
Properties of Powders and Fibers
Sliding friction
Synthesis
Theory
Titanium diboride
Transition metals
Wear resistance
titanium diboride
composite powders
electrolytic coating
mechanochemical synthesis
silicides of transition metals
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Summary:Nanosized composite powders with a composition of titanium diboride–silicides of group IV–VI transition metals are obtained in boride–silicide systems by mechanochemical synthesis for 5–30 min. The initiation effect of TiB 2 on the formation of silicide phases during joint mechanochemical synthesis is shown. It is established that the powder particles are 40–70 nm in size. The powders tend to agglomerating. The properties of hot-pressed compacted TiB 2 –20 wt.% MoSi 2 samples are studied: ultimate bending strength 421 ± 29 MPa; microhardness 25 ± 0.8 GPa. Electrolytic Ni–TiB 2 –MoSi 2 coating possesses high wear-resistance in sliding friction and can be recommended for hardening and recovering the surfaces of machinery and mechanical parts.
ISSN:1068-1302
1573-9066
DOI:10.1007/s11106-018-9920-1