CAJ | 학술논문

分别采用活性屏离子渗碳和直流离子渗碳工艺对奥氏体不锈钢进行了渗碳处理．试验结果表明，活性屏离子渗碳可以获得与普通直流离子渗碳同样的处理效果，在奥氏体不锈钢表面获得单一的Sc相组织，从而显著提高奥氏体不锈钢的硬度和耐磨性能，并能克服直流离子渗碳工艺中的不足．收集活性屏上溅射下来的粒子进行分析，结果表明这些纳米级粒子主要是中性的Fe3C和Fe2C5，它们是活性屏渗碳过程中活性碳原子的载体．通过对活性屏离子渗碳机理的探讨，认为和活性屏离子渗氮的机理相似，也是一个溅射一吸附一脱附的过程．
분별채용활성병리자삼탄화직류리자삼탄공예대오씨체불수강진행료삼탄처리．시험결과표명，활성병리자삼탄가이획득여보통직류리자삼탄동양적처리효과，재오씨체불수강표면획득단일적Sc상조직，종이현저제고오씨체불수강적경도화내마성능，병능극복직류리자삼탄공예중적불족．수집활성병상천사하래적입자진행분석，결과표명저사납미급입자주요시중성적Fe3C화Fe2C5，타문시활성병삼탄과정중활성탄원자적재체．통과대활성병리자삼탄궤리적탐토，인위화활성병리자삼담적궤리상사，야시일개천사일흡부일탈부적과정．
Austenitic stainless steel was carburized by means of the active screen plasma carburizing （ASPC） and direct current plasma carburizing（DCPC）. The experimental results show that ASPC can achieve the similar carburizing effect to that of DCPC. A layer of carbon supersaturated solid solution （i. e. the Sc phase） can be formed on the steel surface so as to improve the hardness and wear resistance of the austenitic stainless steel. ASPC also solves some problems associated with the conventional DCPC. Particles sputtered from the active screen were collected and analyzed. The results showed that the sputtered particles with sizes in sub-micron scale were neutral F%C and Fe2Cs. The particles play the role of the carbon carrier in ASPC. Therefore, ASPC is also a multi-stage process, involving sputtering, adsorption and desorption, the same as active screen plasma nitriding.