Investigation of Microstructure and Tribological Properties of Novel $\hbox{CrN/MoS}_{2}$ Composite Films

Abstract

The complex plating-sulfurizing process, which fitted magnetron sputtering together with low-temperature ion sulfurizing, was utilized to prepare novel CrN/MoS <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> composite solid lubrication films. The composite films were characterized by means of X-ray photoelectron spectroscopy (XPS) analysis, X-ray diffraction, atomic force microscopy, and friction and wear test machines (UMT-2) friction and wear tester, respectively. The experimental results show that there are CrN, Mo <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> N, MoS <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> , and Cr <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> S <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> phases existing in the CrN/MoS <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> composite films, which was demonstrated by XPS analysis results. The CrN/MoS <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> composite films perform better than Cr-Mo-N films in terms of friction coefficient under oil lubrication condition at room temperature. Then, the lubrication mechanism for CrN/MoS <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> composite films was analyzed.