Experimental Analysis on the Environment of Internal Plasma Spraying Techniques

Abstract:

The effects of internal spraying environment on the microstructures and mechanical properties of plasma spraying NiCrBSi+15%Mo coatings were investigated. For experimental analysis of spraying environment, a specialized internal plasma device and its test unit were developed. Firstly, microstructures of spraying coatings and powders were analyzed by scanning electron microscopy (SEM). Furthermore, the boding strength, porosity and micro-hardness of the coatings were investigated and determined separately. According to these properties of plasma spraying coating, the influence of spraying environment on the coating properties and specimen temperature could be investigated. The results show that that the coating performances decreased because of the dust, smog and high temperature of the internal spraying environment. The high-performance internal coatings can be obtained by properly designing spraying process and using the special spraying device.

• Periodical: Applied Mechanics and Materials (Volumes 184-185)
• Pages: 1480-1485
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.184-185.1480
• Online since: June 2012
• Authors: Ming Liu, Hai Jun Wang, Yi Jiang, Yong Ming Guo, Ke Ke Zhao
• Keywords: Coating Properties, Plasma Spraying, Spraying Environment

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