Response surface regression analysis on FeCrBSi particle in-flight properties by plasma spray

Abstract

This work discusses the interactive effects between every two of argon flow rate, voltage, and spray distance on in-flight particles by plasma spray and constructs models that can be used in predicting and analyzing average velocity and temperature. Results of the response surface methodology show that the interactive effects between voltage and spray distance on particle in-flight properties are significant. For a given argon flow rate, particle velocity and temperature response surface are obviously bending, and a saddle point exists. With an increase in spray distance, the interactive effects between voltage and argon flow rate on particle in-flight properties appear gradually and then weaken. With an increase in voltage, the interactive effects between spray distance and argon flow rate on particle in-flight properties change from appearing to strengthening and then to weakening.

Key words： particle velocity; particle temperature; interactive effects; response surface

Acknowledgments

This work was supported by the Distinguished Yong Scholars of National Natural Science Foundation of China (Grant No. 51125023) and the 973 Project (Grant No. 2011CB013405).

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