Supersonic DC plasma torch for deposition of high-density wear-resistant coatings
Supersonic DC plasma torch for deposition of high-density wear-resistant coatings
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DOI：
10.1016/j.matpr.2019.07.230
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
V. Kuz'min;I. Gulyaev;D. Sergachev;S. Vashchenko;O. Kovalev;E. Kornienko;Andrey Tuezov;B. Palagushkin
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文献类型：
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作者：
V. Kuz'min;I. Gulyaev;D. Sergachev;S. Vashchenko;O. Kovalev;E. Kornienko;Andrey Tuezov;B. Palagushkin
介绍了用于沉积高密度功能涂层的超音速等离子体炬的研制结果。结果表明，采用超声速流可以使喷射颗粒的平均速度从300 m/s提高到700 m/s以上。介绍了金属间化合物Ni-Al涂层在亚音速和超音速条件下的耐热性研究结果。介绍了超声速空气等离子体喷涂碳化钨涂层的金相研究结果。结果表明，高硬涂层的孔隙率小于0.4%。
The results of the development of the supersonic plasma torch for deposition of high-density functional coatings are presented. It was established that the use of a supersonic flow permits to raise the average velocity of the sprayed particles from 300 m/s to 700 m/s and more. The heat resistance studies results of the intermetallic Ni-Al coatings sprayed in subsonic and supersonic regimes are presented. The metallographic studies results of coatings from tungsten carbide sprayed with supersonic flow of air plasma are also presented. It was shown that the porosity of the high-hard coatings was less than 0.4%.