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LASER PLASMA ASSISTED CHEMICAL VAPOR DEPOSITIONOF SILICON NITRIDE ON STAINLESS STEEL

Z.Y. Lu 1) , S.M.An 2) , B.H.Cuo 2) , W.M.Li 1) , Y.Mei , Y.L.Xia 2) and J.Xu 2) 1) Department of Mechanical Engineering , Yangzhou University , Yangzhou 225009 , China 2) Dalian University of Technology , Dalian 116024 , China

金属学报(英文版)

This study raised a new assisted technique used for chemical vapor deposition (CVD) in which a laser beam irradiated the surface of substrate and simultaneously the plasma surroundings created in the reactive room, but both laser and plasma were at lower energy level in order to perform easily. The chemical vapor deposition reaction could be performed only just using simultaneously above two assisted methods. If not, the reaction could not be performed, too. It is laser plasma assisted chemical vapor deposition (LPCVD). For these reasons, a LPCVD device had been designed and manufactured, and was carried on practical operation. The results indicated that this technique is successful and feasible. Acting on the system of SiH 4 NH 3 N 2 with both CO 2 laser and RF plasma, expectant film of silicon nitride had been obtained on the surface of stainless steel.

关键词: CVD , null , null , null

钛及钛合金的激光表面处理研究进展

张建斌 , 余冬梅

稀有金属材料与工程

激光表面处理是改善材料硬度、耐磨性和抗蚀性的有效途径.对钛及钛合金激光表面处理(激光表面合金化、激光熔覆和激光表面熔化)因可拓展其应用领域而备受关注.本文结合近年来的研究报道,全面综述2种激光表面处理即激光表面气体氮化和激光粉末合金化的影响因素,激光表面处理后表层组织、性能、缺陷控制以及激光参数的优化.在此基础上,阐述了目前存在的问题和今后的发展方向.

关键词: 钛合金 , 激光 , 表面 , 合金化

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