Preparation and Properties of Ti-TiN-Zr-ZrN Multilayer Films on Titanium Alloy Surface

• Main Authors: LIN Song-sheng, ZHOU Ke-song, DAI Ming-jiang, SHI Qian, HU Fang, HOU Hui-jun, WEI Chun-bei, LIU Jian-wu
• Format: Article
• Language: zho
• Published: Journal of Materials Engineering 2017-06-01
• Series: Journal of Materials Engineering
• Subjects: Ti-TiN-Zr-ZrN multilayer film; titanium alloy; erosion; vacuum cathodic arc deposition
• Online Access: http://jme.biam.ac.cn/CN/Y2017/V45/I6/31

24 cycles Ti-TiN-Zr-ZrN soft-hard alternating multilayer film was deposited on TC11 titanium alloy by vacuum cathodic arc deposition method. The structure and performance of the multilayer film, especially wear and sand erosion resistance were investigated by various analytical methods including pin on disc wear tester, sand erosion tester, 3D surface topography instrument, scanning electron microscopy (SEM), X-ray diffraction(XRD), micro-hardness tester and scratch adhesion tester. The results indicate that the Vickers-hardness of the multilayer film with thickness of 5.8<i>μ</i>m can reach up to 28.10GPa. The adhesive strength of these coatings can be as high as 56N. Wear rate of the multilayer coated alloy is one order of magnitude smaller than bare one, which decreased from 7.06&#215;10^-13 m³&#183;N^-1&#183;m^-1 to 3.03&#215;10^-14m³&#183;N^-1&#183;m^-1. Multilayer films can play the role in hindering the extension of cracks, and thus sand erosion properties of the TC11 titanium alloy substrates are improved.