等离子体与表面相互作用(PSI)是聚变研究领域中重要课题之一。本项目应用LAS-2000质谱分析设备、射频离子源设备及HL-1M装置,对等离子体与石墨及其涂层的相互作用进行了系统研究。研究表明:(1)D~+束辐照HL-1M装置第一壁用SMF-800石墨在770中K处有化学腐蚀高峰,而石墨原位硼化、硅化涂层可以有效地抑制石墨的化学溅射(降低80％～90％);H~+辐射SiC的溅射产额为0.5原子/H~+,为石墨的1/3;原位硼化涂层热解释过程中未见硼氢化合物的释放,其释放成分主要是碳氢化合物,通过它可减少a-C:H成分,提高涂层性能;(2)原位涂层几乎完全抑制了HL-1M装置放电中重金属杂质,而碳、氧杂质则分别降低70％、90％以 Plasma-surface interaction (PSI) is one of the most important topics in the field of fusion research. The project uses LAS-2000 mass spectrometry equipment, radio frequency ion source equipment and HL-1M device, the interaction between plasma and graphite and its coatings were systematically studied. The results show that: (1) SMF-800 graphite on the first wall of HL-1M device has a chemical corrosion peak at 770 at the first wall of D-beam irradiation, while the in situ boride and silicidation coating of graphite can effectively restrain the graphite The sputter yield of H ~ + radiation SiC was 0.5 atom / H ~ +, which was 1/3 of that of graphite by chemical sputtering (reduction of 80% ~ 90%). There was no boron The release of hydrogen compounds, the release of which is mainly composed of hydrocarbons, through which can reduce the aC: H composition, improve coating performance; (2) in situ coating almost completely inhibited the HL-1M device discharge heavy metal impurities, and carbon , Oxygen impurities were reduced by 70%, 90%