Abstract

Low-carbon steel (Type 20) is subjected to cathodic carburizing followed by quenching and anodic plasma electrolytic polishing. The structure of the surface layer and its elemental composition are established, and the microhardness distribution within the surface layer, as well as its surface roughness, are measured. The microhardness of the surface layer exceeds 900 HV after carburizing at 900°C for 20 min in a solution containing ammonium chloride and glycerol. It is established that an increase in the surface roughness Ra to 9 μm after cathodic carburizing is related to the formation and destruction of an outer oxide layer. It is shown that the surface roughness can be reduced to 3.5 μm by anodic polishing in a 3% solution of ammonium chloride for 180 s.

中文翻译：

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电解等离子体条件下阴极渗碳和阳极抛光对钢表面的改性

摘要

对低碳钢（类型20）进行阴极渗碳，然后进行淬火和阳极等离子电解抛光。建立表面层的结构及其元素组成，并测量表面层内的显微硬度分布及其表面粗糙度。在含氯化铵和甘油的溶液中于900°C渗碳20分钟后，表面层的显微硬度超过900 HV。已经确定，在阴极渗碳后表面粗糙度Ra增加至9μm与外部氧化物层的形成和破坏有关。结果表明，通过在3％的氯化铵溶液中进行阳极抛光180 s，可以将表面粗糙度降至3.5μm。