中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心知识库

Evolution of hydrogenated amorphous carbon nitride films was investigated with an introduction of Ar gas in the deposition. The results showed that compressive stress of the films decreased versus an increase of Ar flow rate. Especially, at an Ar flow rate of 5 sccm the film exhibited lower compressive stress, higher hardness and lower root-mean-square (rms) roughness than the films deposited without Ar gas introduction. Structural analysis showed that the films with higher hardness, low compressive stress and lower rms roughness had relatively high sp² and nitrogen content. It was attributed to the assistance of Ar plasma, which can cause N atom to enter graphite ring easily and form curved graphite microstructure.