【摘要】 采用等离子电弧沉积法在9Cr18钢表面制备了厚约0.5μm的TiN薄膜,通过显微硬度测试以及纳米压痕和纳米划痕试验,对比考察了9Cr18钢及其表面TiN薄膜的机械和摩擦性能.结果表明,9Cr18钢及其表面TiN沉积膜的纳米硬度分别为8GPa和38GPa,弹性模量分别为250GPa和580GPa,9Cr18、TiN和有机薄膜的摩擦系数分别为0.40、0.12和0.10;TiN沉积膜可显著提高基体钢的承载和耐磨能力.更多还原

【Abstract】 TiN coating of 0.5 μm thick was deposited on 9Cr18 steel by plasma arc deposition. The mechanical and tribological behaviors of the coating were comparatively investigated with that of the steel substrate by means of nanoindentation test and nanoscratch test. As the results, 9Cr18 steel and the TiN coating thereon had nanohardness about 8 GPa and 38 GPa and elastic moduli about 250 GPa and 580 GPa, respectively, which was determined by nanoindentation. The friction coefficients for the 9Cr18 steel substrate and the TiN coating thereon were approximately 0.4 and 0.12, respectively, which were determined by nanoscratch test. Therefore, the plasmaarcdeposited TiN coating could greatly improve the loadcarrying capacity and wear resistance of the 9Cr18 steel.更多还原