Influence of SiC addition on tribological properties of SiAlON

Mallik A. K., Reddy K. M., Acikbas N. C., Kara F., Mandal H., Basu D., ...More

Ceramics International, vol.37, no.7, pp.2495-2504, 2011 (SCI-Expanded, Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 37 Issue: 7
  • Publication Date: 2011
  • Doi Number: 10.1016/j.ceramint.2011.03.055
  • Journal Name: Ceramics International
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2495-2504
  • Keywords: A. Sintering, Hertzian contact pressures, SiAlON and SiAlON-SiC composite, Silica roll, Tribology
  • Bilecik Şeyh Edebali University Affiliated: Yes

Abstract

The tribological properties of gas pressure sintered SiAlON and its composite with 18 wt% silicon carbide (SiC) against two different mating materials, i.e., alumina and SiAlON are evaluated. SiAlON and SiAlON-18%SiC composite ceramics were prepared by pressure less sintering and gas pressure sintering. Fretting wear tests were carried out under dry unlubricated ambient conditions (room temperature 23-25 °C; relative humidity 50-55%) with a load of 8 N for 45,000 cycles. Friction and wear properties of SiAlON-SiC proved better than the monolithic SiAlON. The formation of silica roll like structure on the composite worn surface was observed. © 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.