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首页> 外文期刊>Corrosion Engineering, Science and Technology >Corrosion behaviour of direct current and active screen plasma carburised AISI 316 stainless steel in boiling sulphuric acid solutions
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Corrosion behaviour of direct current and active screen plasma carburised AISI 316 stainless steel in boiling sulphuric acid solutions

机译：直流和活性屏等离子体渗碳AISI 316不锈钢在沸腾的硫酸溶液中的腐蚀行为

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摘要

Active screen plasma is a recently developed plasma surface alloying technique, which has shown potential for addressing some drawbacks associated with conventional direct current plasma processes. In this study, the corrosion performance of untreated, direct current and active screen plasma carburised AISI 316 was investigated by immersion in a boiling solution of sulphuric acid. The experimental results show that the corrosion behaviour of expanded austenite produced by low temperature plasma carburising is controlled by the type and density of surface defects; the corrosion properties of the active screen plasma carburised material are superior to that produced by direct current plasma because of the significantly reduced edge effect and surface defects; and the bias level used in the active screen carburising treatment has a profound effect on the corrosion performance of the material. Based on the experimental results, the corrosion mechanisms involved are discussed.
机译：有源屏等离子体是最近开发的等离子体表面合金化技术，已经显示出解决与常规直流等离子体工艺相关的一些缺点的潜力。在这项研究中，未处理的，直流电和有源丝网等离子体渗碳的AISI 316的腐蚀性能通过浸入硫酸的沸腾溶液中进行了研究。实验结果表明，低温等离子渗碳产生的膨胀奥氏体的腐蚀行为受表面缺陷的类型和密度控制。由于显着降低了边缘效应和表面缺陷，因此活性丝网等离子渗碳材料的腐蚀性能优于直流等离子所产生的腐蚀性能。主动筛网渗碳处理中使用的偏压水平对材料的腐蚀性能具有深远的影响。根据实验结果，讨论了所涉及的腐蚀机理。

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