Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference (한국윤활학회:학술대회논문집)
- 2002.10b
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- Pages.211-212
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- 2002
Friction and Wear of Pressureless Sintered Ti(C,N)-WC Ceramics
- Park, Dong-Soo (Ceramic Materials Group, KIMM) ;
- Yun, Shin-Sang (Ceramic Materials Group, KIMM) ;
- Han, Byoung-Dong (Ceramic Materials Group, KIMM) ;
- Kim, Hai-Doo (Ceramic Materials Group, KIMM)
- Published : 2002.10.21
Abstract
Friction and wear of pressureless sintered Ti(C,N)-WC ceramics were studied using a ball-on-reciprocating flat apparatus in open air. The silicon nitride ball and the cemented carbide (WC-Co) ball were used against the Ti(C,N)-WC plate samples. The friction coefficients of the Ti(C,N)-WC samples against the silicon nitride ball and the cemented carbide ball were about 0.57 and 0.3, respectively. The wear coefficient of the sample without WC addition was 5 times as large as that of the sample with 10 mole % WC addition when tested against the silicon nitride ball under 98 N. The higher wear coefficient of Ti(C,N)-0WC was explained in part by larger grain size. Wear occurred mainly by grain dislodgment after intergranular cracking mainly caused by the accumulated stress within the grains.