Preparation of Al/SiO₂ Composite Coatings on the Surface of Aluminum Alloy through Atmospheric Plasma Spraying

Abstract:

In this work, Al/SiO₂ composite coatings were deposited on the surface of aluminum alloy through atmospheric plasma spray. The effects of SiO₂ volume in Al/SiO₂ composite powders on the deposition behavior were investigated. It was found that the deposition of the Al/SiO₂ composite powder became more difficult through plasma spray with the increasing of SiO₂ contents. There were reactions between aluminium and silicon oxide during the deposition of Al/SiO₂ powders in the plasma flame. The reactions were helpful to interface cohesions between aluminium and silicon oxide. Al/SiO₂(60:40, 80:20) composites were more suitable for deposition and well interface cohesion through atmospheric plasma spray.

• Periodical: Advanced Materials Research (Volumes 560-561)
• Pages: 1041-1047
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.560-561.1041
• Online since: August 2012
• Authors: Pei Hu Gao, Lei Li, Jian Ping Li, Zhong Yang, Yong Chun Guo
• Keywords: Aluminium Alloy, Atmospheric Plasma Spray, Composite Coating, Silicon Dioxide

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