Abrasion of Steel by Ceramic Coatings: Comparison of RF-DLC to Sputtered B4C

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• 作者：Stephen J. Harris ; Gordon G. Krauss ; Steven J. Simko ; Timothy J. Potter ; Robert W. Carpick ; Bridget Welbes and Martin Grischke
• 关键词：Abrasion ; coating ; DLC ; B4C ; asperities
• 刊名：Tribology Letters
• 出版年：2002
• 出版时间：2002
• 年：2002
• 卷：12
• 期：1
• 页码：43-50
• 全文大小：209 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Tribology, Corrosion and Coatings
  Surfaces and Interfaces and Thin Films
  Theoretical and Applied Mechanics
  Physical Chemistry
  Nanotechnology
  
• 出版者：Springer Netherlands
• ISSN：1573-2711

文摘

The abrasion rates of steel balls sliding against a very smooth diamond-like carbon (DLC) coating and a rough boron carbide (B₄C) coating are compared. The initial abrasiveness of the B₄C coating is about 2 orders of magnitude greater than that of the DLC coating. Both coatings exhibit a rapid decrease in their abrasiveness with sliding distance, but the details of the abrasion kinetics of these coatings are quite different. The abrasiveness of B₄C falls according to a simple power law, while the abrasiveness of the DLC remains constant for a duration that depends on the load and then switches rather suddenly to zero. An explanation for this different behavior is proposed. During the abrasion process the asperities on the B₄C are smoothed to a startling extent.