| ZHAO Yang,ZHU Jin-peng,HAO Zhen-hua,SHU Yong-chun,YANG Kai-jun,HE Ji-lin.Research Progress in Inductive Plasma Spheroidized Powder Materials for Thermal Spraying[J],49(5):81-90 |
| Research Progress in Inductive Plasma Spheroidized Powder Materials for Thermal Spraying |
| Received:March 23, 2019 Revised:May 20, 2020 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2020.05.010 |
| KeyWord:ceramic coating powder inductive plasma technology spheroidization process thermal spraying |
| Author | Institution |
| ZHAO Yang |
a.Henan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou , China |
| ZHU Jin-peng |
a.Henan Province Industrial Technology Research Institute of Resources and Materials, b.School of Materials Science and Engineering, Zhengzhou University, Zhengzhou , China |
| HAO Zhen-hua |
a.Henan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou , China |
| SHU Yong-chun |
a.Henan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou , China |
| YANG Kai-jun |
b.School of Materials Science and Engineering, Zhengzhou University, Zhengzhou , China |
| HE Ji-lin |
a.Henan Province Industrial Technology Research Institute of Resources and Materials, b.School of Materials Science and Engineering, Zhengzhou University, Zhengzhou , China |
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| Abstract: |
| The paper introduced the traditional method for preparation of spherical powder—atomization and spray granulation method, and analyzed the advantages and limitations in thermal spraying during the preparation of spherical powder with the method above. The current application of plasma spheroidizing technology in thermal spraying powder materials was reviewed and the influences of different process conditions in inductive plasma spheroidizing on the powder spheroidization rate and surface morphology were discussed: the state of raw material powder determined the average particle size of the powder after spheroidizing, and reducing the original particle size of powder can improve the molten. Narrow particle size distribution of raw powder was helpful to get powder of degree. Increasing the input power and working gas flow properly can reduce the adhesion of fine particles. The type of working gas affected the enthalpy of plasma torch. The powder feeding rate should be selected according to the powder properties. These key factors provided powerful theoretical support for the regulation mechanism of the properties of thermal spray powder and further understanding the spheroidization mechanism of thermal spray powder with the action of plasma. The problems and development direction of inductive plasma spheroidization in preparation of thermal spraying ceramic powders were summarized and prospected. As a new technique for preparing spherical powder materials with high purity and without pollution, inductive plasma spheroidization has a board prospect of application. |
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