(1. 北京師范大學(xué) 核科學(xué)與技術(shù)學(xué)院 射線束技術(shù)與材料改性教育部重點實驗室，北京 100875；
2. 北京市輻射中心，北京 100875)
摘 要: 以50%~90%(體積分?jǐn)?shù))甘油水溶液為電解液，研究304不銹鋼表面液相等離子體電解快速滲碳工藝；分析不同甘油濃度和電壓下滲碳層的顯微組織、相組成和顯微硬度。結(jié)果表明，隨甘油濃度的提高，滲透電壓上升，滲碳層厚度增加，滲碳層硬度增大，最大硬度達(dá)到762HV；且滲碳層中固溶碳的奧氏體(γC)含量急劇增加，但碳化物含量降低。在80%(體積分?jǐn)?shù))甘油水溶液和電壓350 V工藝條件下獲得的滲碳層質(zhì)量較好。
關(guān)鍵字: 甘油；不銹鋼；液相等離子體電解滲；滲碳
（1. Key Laboratory of Beam Technology and Materials Modification, Ministry of Education,
College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China;
2. Beijin）
Abstract:The rapid carburizing process of plasma electrolytic saturation in 50%-90% (volume fraction) glycerin aqueous solution on 304 stainless steel surface was investigated. The microstructure, phase component and microhardness of carburizing layers at different glycerin concentrations and voltages were analyzed. The results show that by increasing the glycerin concentration, the saturation voltage is improved, meanwhile the thickness and microhardness of carburizing layer are increased, and the maximum microhardness is up to 762HV. In addition, the expanded austenite (γC) content in the carburizing layer increases greatly with the increase of glycerin concentration, but the carbide content reduces correspondingly. It is found that the carburizing layer obtained at 350 V and 80% glycerin (volume fraction) has better property.
Key words: glycerin; stainless steel; plasma electrolytic saturation; carburizing
