4.7 Article

Impact of Ag on the microstructure and tribological behaviors of adaptive ZrMoN-Ag composite lubricating films

Journal

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
Volume 19, Issue -, Pages 2346-2355

Publisher

ELSEVIER
DOI: 10.1016/j.jmrt.2022.05.138

Keywords

Nanocomposites; Microstructures; Mechanical properties; Wear

Funding

  1. National Natural Science Foundation of China [52172090, 52071159]

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In this study, silver was doped into ZrMoN composite film to develop a composite polyphase structure with enhanced mechanical and tribological properties. The composite film exhibited excellent mechanical properties and had the advantage of low friction coefficient in a wide temperature range.
Solid lubricating films have great advantages in extreme operating conditions. In this research, silver (Ag) was doped into the ZrMoN composite film to develop a composite polyphase structure with enhanced mechanical and tribological properties. A series of ZrMoN-Ag composite films with different Ag content were prepared. The results show that the composition phases of the composite films are fcc-Mo2N, fcc-ZrN, and nano crystalline fcc-Ag was dispersed in the films. The ZrMoN-Ag composite films exhibited excellent mechanical properties with a hardness of 27.6 GPa and elastic modulus of 286.8 GPa. In addition, the ZrMoN-Ag composite film with Ag content of 11.88 at.% possessed the advantage of low friction coefficient in a wide temperature range, attributing mainly to the synergetic effect of Ag phase and friction oxidation products. This work provides a promising solution for designing solid self-lubrication composite in wide temperature domain. (C) 2022 The Author(s). Published by Elsevier B.V.

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