Improved anti-wear performance of nanostructured titanium boron nitride coatings

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• 作者：He ; J.L. ; Miyake ; S. ; Setsuhara ; Y. ; Shimizu ; I. ; Suzuki ; M. ; Numata ; K. ; Saito ; H.
• 关键词：Nanocomposite ; Coatings ; Hardness ; Tribology
• 刊名：Wear
• 出版年：2001
• 出版时间：June, 2001
• 年：2001
• 卷：249
• 期：5-6
• 页码：498-502
• 全文大小：122 K

文摘

Titanium boron nitride coatings were synthesized by ion beam assisted sputter deposition. Structural analysis showed that the coatings had a composite structure comprising nanosized TiB₂/TiN crystallites and a thin layer matrix of hexagonal BN. Although, the hardness of these Ti–B–N coatings was generally lower than that of pure TiB₂, improved anti-wear performance was observed. This improvement is explained by the beneficial configuration of hard nanoparticles embedded in a soft lubricating matrix, which increases the coating’s capability to dissipate stress without brittle fracture. Effects of process parameters, such as bombarding energy and nitrogen flow rate were also thoroughly studied.