Study of the Phase Composition and Microstructure of Complex Carbide (Ti, W)C Obtained by Spark Plasma Sintering of WC and TiC Powders
—The possibility of low-temperature in situ synthesis of (Ti, W)C using plasma-chemical WC nanopowders and industrial micron TiC powders is demonstrated. Sintering/synthesis of WC–(25, 50, and 75) wt % TiC is carried out by electric pulsed (“spark”) plasma sintering (SPS) by heating powders in a vac...
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| Veröffentlicht in: | Inorganic materials : applied research 2024-06, Vol.15 (3), p.696-706 |
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| creator | Terent’ev, A. V. Blagoveshchenskij, Yu. V. Isaeva, N. V. Lancev, E.A. Smetanina, K. E. Murashov, A. A. Nokhrin, A. V. Boldin, M. S. Chuvil’deev, V. N. Shcherbak, G. V. |
| description | —The possibility of low-temperature in situ synthesis of (Ti, W)C using plasma-chemical WC nanopowders and industrial micron TiC powders is demonstrated. Sintering/synthesis of WC–(25, 50, and 75) wt % TiC is carried out by electric pulsed (“spark”) plasma sintering (SPS) by heating powders in a vacuum at a rate of 50°C/min to a temperature of more than 1200°C under conditions of applying a stress of 70 MPa. It is established that the synthesis proceeds most efficiently in nanopowders with an addition of 50 and 75 wt % TiC. It is shown that the joint use of plasma-chemical synthesis of nanopowders and SPS makes it possible to obtain fine-grained (with a grain size of less than 1 μm) samples with increased density and satisfactory mechanical properties (Vickers hardness is 17–18 GPa, and minimum Palmquist crack resistance coefficient is ~3 MPa m
1/2
). |
| doi_str_mv | 10.1134/S2075113324700114 |
| format | Article |
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1/2
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1/2
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| subjects | Chemistry Chemistry and Materials Science Industrial Chemistry/Chemical Engineering Inorganic Chemistry Materials Science Plasmochemical Methods of Production and Treatment of Materials |
| title | Study of the Phase Composition and Microstructure of Complex Carbide (Ti, W)C Obtained by Spark Plasma Sintering of WC and TiC Powders |
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