Effect of Pressure of Nitrogen Atmosphere on Microstructure and Mechanical Properties of Ti(C, N)–12WC–16Ni–4Mo2C Cermet

Teng Biao Zheng; Ping Feng; Hai Yan Lei

doi:10.4028/www.scientific.net/AMR.602-604.540

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Effect of Pressure of Nitrogen Atmosphere on Microstructure and Mechanical Properties of Ti(C, N)–12WC–16Ni–4Mo₂C Cermet

Abstract:

The effect of sintering atmosphere and nitrogen pressure on microstructure of Ti(C, N)–12WC–16Ni–4Mo₂C cermet were investigated by scanning electron microscopy (SEM) and optical microscopy (OM), the transverse rupture strength (TRS), porosities, volume fractions of phases and grain sizes were determined. Results show that nitrogen pressure has a significant impact on TRS, appropriate nitrogen pressure could improve TRS. Vacuum sintering promotes the densification of sintered body, however, nitrogen atmosphere sintering could gain maximal TRS. Nitrogen atmosphere sintering facilitates the formation of inner rim phase and reduces the dissolution of TiC and TiN, small grain size is gained.

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Periodical:

Advanced Materials Research (Volumes 602-604)

Pages:

540-543

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.602-604.540

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Online since:

December 2012

Authors:

Teng Biao Zheng, Ping Feng*, Hai Yan Lei

Keywords:

Microstructure, Nitrogen Atmosphere, Sintering, Ti (C,N)-Based Cermet

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