Research on Optimizing Spray Parameters for Cr3C2 - NiCr Coating Created on Alloy Steel by Plasma Spraying Technique
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Faculty of Mechanical Engineering, Hanoi University of Industry, Hanoi City, Vietnam
HaUI Institute of Technology, Hanoi University of Industry, Hanoi City, Vietnam
Submission date: 2022-10-19
Final revision date: 2022-11-29
Acceptance date: 2022-11-30
Online publication date: 2022-12-06
Publication date: 2022-12-22
Corresponding author
Thao Xuan Dang   

Center for mechanical engineering, Hanoi Univversity of Industry, Viet Nam
Journal of Machine Engineering 2022;22(4):43-53
In this work, Cr3C2-NiCr ceramic coating with NiCr content of 30% was created on E355 (St 52-3) / 1.0060 alloy steel substrate by air plasma thermal spraying (APS) method. The adhesion, tensile strength of the coating were studied in relation to spray parameters including current intensity, powder feed rate, and stand-off distance according to experimental planning. Analysis of variance (ANOVA) were used to build regression functions expressing the relationship between each property and spray parameters. ANOVA results indicated that the spray parameters have different influences for each coating properties. In addition, regression model of the properties gives prediction results very close to experimental results. The optimization problem was solved in order to achieve the maximum value of adhesion and tensile strength of the coating. Values of the spray parameters for Cr3C2 - NiCr coating to achieve the above criteria have been determined and proposed in this study.
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