SAPS工艺中电流和电压对HfC涂层结构形貌的影响  

Effect of Current and Voltage on the Structural Morphology of the HfC Coating During the SAPS Process

作　　者：杨旸 李克智[2] 赵春 王杰[1] Yang Yang;Kezhi Li;Chun Zhao;Jie Wang(Yuncheng University,Yuncheng 044000;Carbon/carbon Composites Research Center,Northwestern Polytechnical University,Xi'an 710072)

机构地区：[1]运城学院,应用化学系,运城044000 [2]西北工业大学,碳碳复合材料研究中心,西安710021

出　　处：《热喷涂技术》2020年第1期9-18,8,共11页Thermal Spray Technology

基　　金：山西省应用基础研究计划(201901D211463)。

摘　　要：采用SAPS法在包埋有SiC内涂层的C/C复合材料的表面制备了HfC抗烧蚀涂层;通过改变工艺过程中的电流和电压等参数,制备了不同的HfC涂层试样;结合XRD、SEM、声发射-载荷试验及共聚焦显微镜等表征手段,研究了在喷涂电流及电压变化时,制备出的HfC涂层结构、形貌的变化情况;通过氧乙炔火焰对不同涂层的烧蚀性能进行了测试,并研究了烧蚀后不同涂层形貌和结构的变化。结果表明,在喷涂电流为400 A、喷涂电压为130 V时制备的涂层综合性能最佳。HfC protective coating was deposited on the surface of SiC-coated C/C composites by SAPS.Different samples were prepared under the conditions of alternative currents and voltages.Combined with XRD,SEM,roughness analysis and acoustic emission spectra with load-scratch test,the structure and morphology of the HfC coatings deposited with different currents and voltages were also studied.The ablation properties of different coatings were tested by oxyacetylene flame.The changes of the morphology and structure of the different coatings after ablation were also studied.The results showed that the HfC coating deposited by the current of 400 A and the voltage of 130 V exhibit the best property.

关 键 词：C/C复合材料 超音速等离子喷涂 HfC涂层 烧蚀 

分 类 号：TG174.4[金属学及工艺—金属表面处理]