Study on concentric mutual lapping for improvement in sliding surface function of SiC ceramics

Yusuke Tanimoto, Hayato Koyama, Hiroyuki Kodama, Kazuhito Ohashi

Research output: Contribution to conferencePaperpeer-review

Abstract

In this study, the ring shaped SiC ceramics applied to sliding components are selected as specimens. In the surface of SiC ceramics, many scratches penetrating the inner edge to outer one are generated in random direction by conventional lapping. The scratches affect the surface functions in prevention of fluid exuding from the outer side to the inner side of SiC ring and have low friction force on the finished surface as a sliding material. In this study, the concentric mutual lapping is proposed to remove the scratches by conventional lapping. Then, the surface topography is evaluated quantitatively by the white light interferometer and proposed the vectorial and quantitative analysis of surface profile. As a result, the concentric mutual lapping can remove scratches quickly by the conventional lapping. And then circumferential scratches along a lapping direction were generated. In addition, we analyzed effect of surface topography on the surface function as a sliding material by sliding tests. From the investigation, it turned out that the concentric mutual lapping suppressed the difference in surface functions depending on the sliding direction.

Original languageEnglish
Publication statusPublished - 2018
Event21st International Symposium on Advances in Abrasive Technology, ISAAT 2018 - Toronto, Canada
Duration: Oct 14 2018Oct 16 2018

Conference

Conference21st International Symposium on Advances in Abrasive Technology, ISAAT 2018
CountryCanada
CityToronto
Period10/14/1810/16/18

Keywords

  • Concentric mutual lapping
  • Lapping
  • Silicon carbide
  • Surface function

ASJC Scopus subject areas

  • Mechanics of Materials
  • Industrial and Manufacturing Engineering
  • Mechanical Engineering
  • Materials Science(all)

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