Preparation of Ti3SiC2 coating by electrical explosion powder spraying method

doi:10.13251/j.issn.0254-6051.2021.01.026

Heat Treatment of Metals ›› 2021, Vol. 46 ›› Issue (1): 138-142.DOI: 10.13251/j.issn.0254-6051.2021.01.026

• SURFACE ENGINEERING • Previous Articles Next Articles

Preparation of Ti₃SiC₂ coating by electrical explosion powder spraying method

Liu Zonghan^1,2, Zhu Liang^1,2, Lin Qiaoli^1,2, Zhang Aihua³, Li Chu³

1. State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal,Lanzhou University of Technology,Lanzhou Gansu 730050,China;
2. College of Materials Science and Engineering,Lanzhou University of Technology,Lanzhou Gansu 730050,China;
3. College of Electrical and Information Engineering,Lanzhou University of Technology,Lanzhou Gansu 730050,China

Received:2020-06-28 Online:2021-01-25 Published:2021-01-26

Abstract

Abstract: Ti₃SiC₂ coating was prepared with Ti₃SiC₂ powder as electrical spraying material by using self-made continuous powder-feeding electrical explosion spraying equipment.According to the surface morphologies and cross-sectional characteristics of the prepared coating,the effects of charging voltage,powder particle size,and graphite blending amount on the electrical explosion spraying process were analyzed.The results show that when the particle size of the powder is 28 μm,the charging voltage is higher than 15 kV,and the appropriate amount of graphite powder is 10%,the coating deposition rate is higher and the uniformity is better.The XRD analysis results show that the coating is composed of TiC and Ti₃SiC₂.The bonding strength of the coating determined by using the cemented dual sample tensile test method is greater than 37 MPa.Therefore,graphite powder blending can improve the conductivity of the powder during electrical explosion,reduce the surface discharge of the outer edge of the powder particles,make the powder to be heated more thoroughly,and help the coating formation.

Key words: electrical explosion spraying, Ti₃SiC₂ coating, coating morphology

CLC Number:

TG174.44

Liu Zonghan, Zhu Liang, Lin Qiaoli, Zhang Aihua, Li Chu. Preparation of Ti₃SiC₂ coating by electrical explosion powder spraying method[J]. Heat Treatment of Metals, 2021, 46(1): 138-142.

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Preparation of Ti₃SiC₂ coating by electrical explosion powder spraying method

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