采用真空等离子喷涂技术在铜基体表面制备了钨涂层,分别通过NiCrAl和W75Cu25涂层作为中间层。5 MW/m2,2 s的高热负荷电子束实验表明NiCrAl中间层提高了涂层的热导率并降低了热应力和残余应力值。W75Cu25涂层作为中间层则表现出较差的热疲劳性能。高热负荷电子束真空等离子喷涂钨涂层表现出侵蚀和微裂纹。因热应力导致涂层发生塑性变形,在高温情况下裂纹起源于熔融的钨颗粒,但是,裂纹被钨涂层塑性变形和孔洞所抑制。 The tungsten coating was prepared on the surface of copper substrate by vacuum plasma spraying technology. The coatings were passed through the NiCrAl and W75Cu25 coatings respectively. High-heat load electron beam experiments at 5 MW / m2 for 2 s showed that the NiCrAl intermediate layer increased the thermal conductivity of the coating and reduced the thermal and residual stress values. W75Cu25 coating as the middle layer showed poor thermal fatigue properties. High thermal load electron beam vacuum plasma sprayed tungsten coatings exhibit erosion and microcracking. Due to the plastic deformation of the coating due to thermal stress, the crack originates from the molten tungsten particles at high temperature, but the crack is suppressed by the plastic deformation of the tungsten coating and the pores.