Tribological Behaviors of Inconel 718–Tungsten Carbide Friction Pair with Sulfur Additive Lubrication
Ye Yang,
Hao Luan,
Songshan Guo,
Fengbin Liu,
Yuanjing Dai,
Chenhui Zhang,
Duzhou Zhang,
Gang Zhou
Affiliations
Ye Yang
School of Mechanical and Material Engineering, North China University of Technology, Beijing 100144, China
Hao Luan
School of Mechanical and Material Engineering, North China University of Technology, Beijing 100144, China
Songshan Guo
School of Mechanical and Material Engineering, North China University of Technology, Beijing 100144, China
Fengbin Liu
School of Mechanical and Material Engineering, North China University of Technology, Beijing 100144, China
Yuanjing Dai
Tianjin Research Institute for Advanced Equipment, Tsinghua University, Tianjin 300308, China
Chenhui Zhang
State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
Duzhou Zhang
Beijing Key Laboratory of Long-Life Technology of Precise Rotation and Transmission Mechanisms, Beijing Institute of Control Engineering, Beijing 100094, China
Gang Zhou
Beijing Key Laboratory of Long-Life Technology of Precise Rotation and Transmission Mechanisms, Beijing Institute of Control Engineering, Beijing 100094, China
This work investigated the lubricating and anti-wear properties of several sulfur additives for a nickel-based superalloy–tungsten carbide friction pair. Compared with PAO40 without any active chemical compounds, the three kinds of sulfur additives could decrease the friction coefficient from 0.2 to 0.1 and the wear volume by 90%. Sulfurized fatty acid ester had the best performance under high temperature and heavy load with COF below 0.1 and the smallest wear volume. Furthermore, the lubricating mechanism was investigated by XPS. The physical adsorptive film and the tribochemical film together enhanced the friction-reducing and anti-wear performances of the lubricants. This effective lubricant for Inconel 718 can be applied to the machining of nickel-based alloy.
