Wear-resistant ceramic coatings deposited by liquid thermal spraying. Issue 22 (15th November 2022)

• Record Type: Journal Article
• Authors: Hu, Han; Mao, Lin; Yin, Shuo; Liao, Hanlin; Zhang, Chao
• Is Part Of: Ceramics international. Volume 48:Issue 22(2022)
• Page Start: 33245
• Page End: 33255
• Publication Date: 2022-11-15
• Subjects: Liquid thermal spraying -- Coating -- Ceramic -- Wear-resistant; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.07.267
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: As a surface strengthening and surface modification technology of materials, liquid thermal spray technology has been used in many fields, such as wear and friction reduction, corrosion resistance, and high-temperature oxidation resistance. This article reviews the progress of liquid thermal sprayed coating in wear resistance as well as friction reduction in recent years. The influences of microstructure, composition, phase structure and mechanical properties on the tribological properties of typical coatings (including ceramic coatings and multiphase composite coatings) are investigated. The tribological properties of the coating are determined by the coating characteristics (including microstructure, porosity, mechanical properties, etc.) and the service conditions (working temperature, lubrication state, etc.). Typical ceramic wear-resistant coatings include Al2 O3, YSZ, HA coatings, etc. The tribological properties of the coating can be significantly improved through process optimization and heat treatment. The comparison of nanostructured and microstructured ceramic-based coating reveals that nanostructured coating reduces wear by absorbing stress. The interaction between different constituent phases improves wear resistance and reduces wear in composite coatings. Finally, various challenges faced by liquid thermal spray are pointed out, and future research focuses are proposed.