控制棒驱动机构耐压壳体定位面喷涂工艺研究
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摘要
本文采用超音速火焰喷涂和等离子喷涂分别在控制棒驱动机构耐压壳定位面上制备了CrNi/CrC耐磨涂层,研究了不同的工艺参数下喷涂涂层的硬度、孔隙率和沉积效率,对比分析了两种喷涂方法的显微结构和孔隙率、结合强度和显微硬度。结果表明不同工艺参数对涂层有着明显的影响,超音速火焰喷涂的涂层性能优于等离子喷涂涂层性能,超音速火焰喷涂涂层显微结构更为致密,超音速火焰喷涂涂层的结合强度约为等离子喷涂涂层的2. 5倍,超音速火焰喷涂涂层的显微硬度约为等离子喷涂的1. 3倍。
In this paper, CrNi/CrC wear-resistant coatings were manufactured on the pressure housing positioning surface of CRDM by supersonic flame spraying and plasma spraying. The hardness, porosity and deposition efficiency of the spray coating under the different parameters were compared and analyzed, as well as the microstructure, porosity,bond strength and microhardness of the two spray methods. The results show that different process parameters have a significant effect on the coating. The performance of supersonic flame spray coating is better than that of plasma spray coating. The supersonic flame spray coating has a more compact microstructure and a combination of supersonic flame spray coating. The intensity is about 2. 5 times that of the plasma spray coating, and the micro sonic hardness of the supersonic flame spray coating is about 1. 3 times that of the plasma spray.
In this paper, CrNi/CrC wear-resistant coatings were manufactured on the pressure housing positioning surface of CRDM by supersonic flame spraying and plasma spraying. The hardness, porosity and deposition efficiency of the spray coating under the different parameters were compared and analyzed, as well as the microstructure, porosity,bond strength and microhardness of the two spray methods. The results show that different process parameters have a significant effect on the coating. The performance of supersonic flame spray coating is better than that of plasma spray coating. The supersonic flame spray coating has a more compact microstructure and a combination of supersonic flame spray coating. The intensity is about 2. 5 times that of the plasma spray coating, and the micro sonic hardness of the supersonic flame spray coating is about 1. 3 times that of the plasma spray.
引文
[1]梅羽菲,周宁,刘正钦等.常用制备耐磨涂层的热喷涂技术[J].教育现代化,2016(12):84-85.
[2]时海芳,吕文涛,李晓等.镁合金陶瓷涂层研究现状[J].电镀与涂饰,2008(1):54-56.
[3]Vincent S,Le C Bot,Sarret F,et al.Penalty and EulerianLagrangian VOF methods for impact and solidification of metal droplets plasma spray process[J].Computer&Fluids,2014,10(4):1-10.
[2]时海芳,吕文涛,李晓等.镁合金陶瓷涂层研究现状[J].电镀与涂饰,2008(1):54-56.
[3]Vincent S,Le C Bot,Sarret F,et al.Penalty and EulerianLagrangian VOF methods for impact and solidification of metal droplets plasma spray process[J].Computer&Fluids,2014,10(4):1-10.