Investigation of structral, mechanical, and tribological properties of CrTiAlN composite coatings deposited on piston rings
In order to improve the life of piston rings, a multicomponent coating system Cr-Ti-Al-N was deposited by multi-arc ion plating technology in a gas mixture of Ar+N2. Three processing steps in deposition involved were plasma ion cleaning, buffer layer deposition, and multicomponent layer deposition. During the final deposition step, nitrogen concentration was controlled at 0～50 at.％. The metallic ratio of Cr,Ti,and Al was varied by adjusting the target currents. The nano-indenter, ehergy dispersive X-ray (EDX), scanning electron microscopy and X-ray diffraction instrument were used to investigate the mechanical property and microstructure of the coatings. The experimental results showed that the optimized quaternary Cr-Ti-Al-N coating performs better than binary CrN as well as the Cr plating in teams of hardness and wear resistance. The introduction of both Ti and Al elements into the CrN-based coatings enhances both of their mechanical and tribological performance.
Piston rings CrAlTiN composite coatings Multi-ion plating Tribological properties
CAI Zhi-hai ZHANG Ping DU Jun ZHAO Jun-jun
Academy of Armored Force Engineering, National Key Laboratory for Remanufacturing, Beijing, 100072
国际会议
沈阳
英文
362-366
2009-08-24（万方平台首次上网日期，不代表论文的发表时间）