On the Plasma (ion) Carburized Layer of High Nitrogen Austenitic Stainless Steel
来源期刊：材料热处理学报2004年第5期
论文作者：N.Kanayama T.Oishi K.Ichii Y.Ueda H.Miyake
关键词：plasma (ion) carburizing; high nitrogen stainless steel; GDOES;
摘 要：The manganese concentration of austenitic stainless steel decreases from the inner layer towards the surface of the plasma (ion) carburized layer due to the evaporation of manganese from the specimen surface. The carbon concentration in the carburized layer is influenced by alloyed elements such as Ct, Ni, Si, and Mo, as well as Nitrogen. This study examined the effects of nitrogen on the properties of the carburized layer of high nitrogen stainless steel. Plasma (ion)carburizing was carried out for 14.4 ks at 1303 K in an atmosphere of CH4+H2 gas mixtures under a pressure of 350 Pa. The plasma carburized layer of the high nitrogen stainless steel was thinner than that of an austentric stainless steel containing no nitrogen. This suggested that the nitrogen raised the activity of carbon in the plasma carburized layer, GDOES measurement indicated that the nitrogen level in the layer did not vary after plasma (ion) carburizing.
N.Kanayama1，T.Oishi2，K.Ichii2，Y.Ueda1，H.Miyake2
(1.Shimane Institute for Industrial Technology, 1 Hokuryo-cho, Matsue, Shimane, 690-0816 Japan;
2.Faculty of Engineering, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka 564-8680 Japan)
摘要:The manganese concentration of austenitic stainless steel decreases from the inner layer towards the surface of the plasma (ion) carburized layer due to the evaporation of manganese from the specimen surface. The carbon concentration in the carburized layer is influenced by alloyed elements such as Ct, Ni, Si, and Mo, as well as Nitrogen. This study examined the effects of nitrogen on the properties of the carburized layer of high nitrogen stainless steel. Plasma (ion)carburizing was carried out for 14.4 ks at 1303 K in an atmosphere of CH4+H2 gas mixtures under a pressure of 350 Pa. The plasma carburized layer of the high nitrogen stainless steel was thinner than that of an austentric stainless steel containing no nitrogen. This suggested that the nitrogen raised the activity of carbon in the plasma carburized layer, GDOES measurement indicated that the nitrogen level in the layer did not vary after plasma (ion) carburizing.
关键词:plasma (ion) carburizing; high nitrogen stainless steel; GDOES;
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