Analysis on Residue Stresses in Coating of Thin-Wall Parts by Plasma Spraying

Li Ping Niu; Ting An Zhang; Ji Cheng He; Zhi He Dou

doi:10.4028/www.scientific.net/AMR.391-392.654

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Analysis on Residue Stresses in Coating of Thin-Wall Parts by Plasma Spraying

Abstract:

Residual stresses are determined by different materials and processing parameters so that it is hard to systematically carry on the experimental testing, and it also spends a plenty of time and running costs. Therefore, it is necessary to estimate the residual stresses by mathematical techniques. In this paper, a mathematical method is proposed, and the calculating results are compared with the testing results of alumina and W coatings on various matrixes (process: plasma spraying) that are highly consistent. The calculating results show that the thermal expansion coefficient, substrate preheating temperature and thickness of coating have significant effects on the residual stresses.

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Periodical:

Advanced Materials Research (Volumes 391-392)

Pages:

654-660

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.391-392.654

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Online since:

December 2011

Authors:

Li Ping Niu, Ting An Zhang, Ji Cheng He, Zhi He Dou

Keywords:

Mathematical Models, Plasma-Sprayed, Residual Thermal Stresses, Superposition Principle

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