High temperature sliding wear behaviors of ion plating TiN compositecoating with ion nitriding as interlayer on hot work die steel

来源期刊：中国有色金属学报(英文版)2000年第6期

论文作者：胡树兵 李志章 梅志 吴进明

文章页码：777 - 782

Key words：TiN; composite coating; interlayer; high temperature wear

Abstract: High temperature sliding wear behaviors of ion plating TiN composite coating with ion nitriding interlayer on 3Cr2W8V hot work die steel substrate during 500~700℃were investigated. Phase structure was analyzed by XRD and adhesion strength of TiN coating was measured by scratch test. The worn morphologies and wear mechanism of TiN composite coating were observed and analyzed by using SEM. The results showed that both adhesion strength and hardness of TiN composite coating with ion nitriding interlayer are higher than those of single TiN coating. Ion nitriding interlayer provides a stronger support for TiN coating. With increasing temperature, the wear rates and friction coefficient of all tested coatings increase. The wear resistance of TiN composite coating is better than that of single TiN coating. The wear mechanisms of TiN composite coating are mainly adhesion-transfer wear and abrasive wear. The adhesion-transfer wear becomes more severe as the test temperature increases.