Microstructural and wear characterization of SiC reinforced Al{sub}2O{sub}3·TiO{sub}2 plasma coating

摘要

Purpose - The aim of this study is to present an experimental research on a Al{sub}2O{sub}3 · TiO{sub}2 plasma coating on AISI 316 stainless steel substrate with and without SiC particulate reinforcement to show how SiC particulate effect on the hardness, wear resistance and microstructure of the coating. Design/methodology/approach - The main objective of the paper is to investigate the effect of SiC particulate on the coating properties such as hardness, wear resistance and microstructure. Achieving of this purpose, harness and sliding test, surface roughness measurements were carried out. In addition to that parallel work on microstructural examination by optical microscope were also conducted. Owing to SiC particulate is harder than Al{sub}2O{sub}3 · TiO{sub}2 plasma coating, it influence hardness and tribological behavior and result in increasing in hardness values and wear resistance of the coating reinforced with SiC particulate compare with unreinforced Al{sub}2O{sub}3·TiO{sub}2 plasma coating. Findings - This study provides experimental results about the Al{sub}2O{sub}3·TiO{sub}2 plasma coating with and without SiC{sub}p reinforcement. The obtained experimental results indicate that SiC{sub}p in the coating is influence hardness, wear resistance and microstructure of the coating and make them much harder and having wear resistance. This result is consisted with the values obtained previous studies that is available in literature. Research limitations/implications - SEM or TEM studies may be needed for better understanding of wear mechanism. Various percentage of SiC particulate in the coating can be used in the further researches and provide more detailed information about effecting on SiC{sub}p reinforcement of the coating. Practical implications - The results show that SiC{sub}p reinforcement contribute increasing in hardness and wear resistance of the coating. Those compositions of the coating can easily used in related industrial applications. Originality/value - This paper fulfils some useful information about SiC{sub}p Al{sub}2O{sub}3-TiO{sub}2 plasma coating and offers practical help to students, related academicians and researchers in the industry.