Friction and Wear Properties of Hard Materials Against Metals. Comparison of Hard Coating Films and Sintered Ceramics.

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  • 硬質材料の金属に対する摩擦・摩耗特性　　硬質皮膜と焼結材料の比較
  • コウシツ ザイリョウ ノ キンゾク ニ タイスル マサツ マモウ トクセイ コ
  • Comparison of Hard Coating Films and Sintered Ceramics
  • 硬質皮膜と焼結材料の比較

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Abstract

Friction and wear tests were conducted to determine the tribological properties of hard materials, such as coating films and sintered ceramics, versus several types of industrial metals.<br>TiN and CrN films deposited on flat tungsten-carbide substrates by ionplating were selected as coating film specimens. Si3N4 and SiC as sintered ceramic specimens. Each specimen was slid reciprocally against metal balls (SUJ2, SUS304, Ti-6Al-4V, Ti, and Al). After sliding experiments, specimen wear and metal transfer were studied.<br>SiC showed the lowest friction coefficient in this study. Sintered ceramic specimens wore normally. In contrast, peeling wear occurred on the TiN film against SUJ2, SUS304, and Ti-6Al-4V. Coating films, especially CrN, have better wear resistance than sintered ceramics. Mating materials (metal balls) wore heavily in sliding against coating films, presumably the sub-micro-scale surface roughness of coating films affected the wear.

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