Study of plasma nitriding of austenitic stainless steel
304 and 316L stainless steels were treated by plasma nitriding at different temperatures and time. The microstructures of the plasma nitrided layers were observed by metallographic microscope. The hardness of nitrided layers were tested by digital microhardness tester. Corrosion resistance of plasma nitrided layers was investigated by salt spray corrosion box. The results indicated that nitrided depth and microhardness of the nitrided samples increased with the increase of nitriding temperature, corrosion resistance of plasma nitrided layers reduced. Microhardness of the nitrided samples almost without changed ,but nitrided depth obviously increased,(when nitriding temperature was high 400 ℃), corrosion resistance of plasma nitrided layers reduced, with the increase of nitriding time. The hardness , depth and he anticorrosion to salt atmosphere of nitrided layers of 316L stainless steel were higher than 304 stainless steel Under homogeneous test condition.
plasma nitriding austenitic stainless steel nitriding temperature nitriding time properties
WANGQi LUJun YANG Wei WANGJing
Shanghai Machine Building Technology Institute Co.,Ltd., Shanghai Engineering Research Center of Materials Modification, Shanghai 200070, China
国际会议
北京
英文
309-312
2012-10-23（万方平台首次上网日期，不代表论文的发表时间）