Effect of binder-phase modification and Cr{sub 3}C{sub 2} addition on properties of WC-10Co cemented carbide
- Indian Inst. of Tech., Kanpur (India)
For production of fine-grained and corrosion-resistant tungsten carbide (WC) based cemented carbides, addition of chromium carbide (Cr{sub 3}C{sub 2}) in small amounts is standard practice. No systematic study, however, has been made of the effects of large additions (maximum 6 wt%) of Cr{sub 3}C{sub 2} as a substitute for tungsten carbide. This study focuses on the effect of hard-phase substitution by Cr{sub 3}C{sub 2} in WC-10Co cemented carbide. An attempt is also made to modify the binder metal cobalt by partial or complete substitution of nickel. Specimens were prepared using the standard liquid-phase sintering process and were tested for sintered porosity, mechanical properties, corrosion resistance, and microstructural parameters. Results confirm the findings of earlier workers regarding grain refinement and improvement of mechanical properties upon the addition of small amounts (<2 wt%) of Cr{sub 3}C{sub 2}. Modification of the binder phase improves indentation fracture toughness and corrosion resistance. Addition of Cr{sub 3}C{sub 2} independent of the binder type improves corrosion resistance.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 136965
- Journal Information:
- Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 5 Vol. 4; ISSN 1059-9495; ISSN JMEPEG
- Country of Publication:
- United States
- Language:
- English
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