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介绍了多弧离子渗碳的一些成果。用石墨阴极电弧源作为渗碳源,由冷阴极电弧放电产生了高密度碳离子流。试样(A3或20钢)在负偏压的作用下,碳离子流高速轰击试样,使其加热到900～1000℃高温,碳离子渗入试样内部形成高渗速渗碳层。同时研究了工艺参数与渗层厚度的关系,渗碳层的显微组织,渗层碳浓度分布。试验表明,这种多弧离子渗碳技术,是一种新的金属表面等离子渗碳技术,是离子渗碳工艺的新发展。
Introduced some of the results of multi-arc ion carburization. Using a graphite cathode arc source as a carburizing source, a high-density carbon ion current is generated by the cold cathode arc discharge. The sample (A3 or 20 steel) under the action of negative bias, the carbon ion flow bombard the sample at high speed, heated to 900 ~ 1000 ℃ high temperature, carbonic acid infiltration into the sample to form a high-carburized carburizing layer. At the same time, the relationship between the technological parameters and the thickness of the infiltrated layer, the microstructure of the carburized layer and the carbon concentration distribution in the infiltrated layer were studied. Experiments show that this multi-arc ion carburizing technology is a new metal surface plasma carburizing technology, which is a new development of ion-carburizing process.