Characterisation of thin α-Al2O3 tribo-coating deposited by low-power gas tunnel plasma spray

IF 1.7 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Zulhelmi Alif Abd Halim, N. Ahmad
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引用次数: 0

Abstract

This study used a unique, low-power (2.8 kW) gas tunnel plasma spray and γ-Al2O3 feedstock powder to deposit a thin Al2O3 coating (<2 µm) on mild steel substrate. By optimising the plasma gas flow rate, powder feed rate, spraying time, and distance, a dense and homogeneous Al2O3 coating was obtained at a very high deposition rate (150 nm/s). During plasma coating, the high energy density plasma transforms the γ-Al2O3 powder into a highly crystalline α-Al2O3 as the predominant microstructure of the coating. The performance of the Al2O3 coating on mild steel was then evaluated preliminary using a linear sliding wear test against a chrome-steel ball, with the results indicating an 18–26% reduction in wear when compared to the uncoated substrate.
低功率气体隧道等离子喷涂沉积α-Al2O3摩擦涂层的表征
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来源期刊
Materials Science and Technology
Materials Science and Technology 工程技术-材料科学:综合
CiteScore
2.70
自引率
5.60%
发文量
0
审稿时长
3 months
期刊介绍: 《Materials Science and Technology》(MST) is an international forum for the publication of refereed contributions covering fundamental and technological aspects of materials science and engineering.
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