感应耦合等离子体喷涂工作参数对涂层性能影响的实验研究

doi:10.19595/j.cnki.1000-6753.tces.210607

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Abstract Inductively coupled plasma (ICP) has obvious technical advantages in the preparation of high purity ceramic coatings because of the absence of electrode ablation pollution and the purity of plasma environment. In this paper, the experimental study on the preparation of boron carbide coating was carried out with the self-developed inductively coupled plasma spraying equipment. The emission spectrometer and high speed camera were used to diagnose the plasma characteristics after adding hydrogen into the discharge gas. The effects of plasma working parameters on the quality of the coating were studied by adding hydrogen in different proportions into the plasma discharge gas. The microstructure, phase and composition of the coating were analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray fluorescence (XRF).The results show that the addition of hydrogen in the discharge gas can increase the macroscopic gas temperature of plasma, and thus increase the surface melting rate of the sprayed powder. When 0.7L/min hydrogen was added into the discharge gas, the bonding strength of the coating was the highest, and the crystal structure of boron carbide was not changed during the plasma preparation process. Through comparative study, the optimum preparation parameters were obtained, which provided an important experimental basis for exploring process parameters of the independently developed technology.

Key words： Inductively coupled plasma hydrogen discharge gas boron carbide coating

Received: 27 April 2021

PACS:

O539

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	Articles by authors
	Zhan Zhihua
	Wang Chunhua
	Zhou Qiujiao
	Liu Chengzhou
	Zhao Peng

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Zhan Zhihua,Wang Chunhua,Zhou Qiujiao等. Experimental Study on the Influence of Inductively Coupled Plasma Operating Parameters on Coating Quality[J]. Transactions of China Electrotechnical Society, 2022, 37(11): 2725-2732.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.210607 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I11/2725

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