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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >The influence of active screen plasma nitriding parameters on corrosion behavior of a low-alloy steel
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The influence of active screen plasma nitriding parameters on corrosion behavior of a low-alloy steel

机译：活性屏等离子体渗氮参数对低合金钢腐蚀行为的影响

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摘要

This work presents a comparative study of low-alloy steel nitriding for different possible techniques. Active screen plasma nitriding (ASPN) is a successful surface modification method that has many advantages over the conventional DC plasma nitriding (CPN). The corrosion behavior of 30CrNiMo8 low-alloy steel has been examined using anodic polarization tests in 3.5 percent NaCl solution under varying conditions of ASPN and CPN processes. The process variables included active screen setup parameters, treatment temperature (550 and 580 deg C), gas mixture (25/75 and 75/25 of N_2/H_2) and treatment time (5 and 10 h) in 500 Pa pressure. The structure and phases composition of the compound layer was studied by X-ray diffraction (XRD), microhardness tests, optical microscopy and scanning electron microscopy (SEM). It was observed that ASPN treated samples surface enhanced corrosion resistance while the temperature and/or hole size of screen setup increased.
机译：这项工作提出了针对不同可能技术的低合金钢渗氮的比较研究。有源屏蔽等离子体氮化（ASPN）是一种成功的表面改性方法，与常规的直流等离子体氮化（CPN）相比，具有许多优势。在ASPN和CPN工艺的不同条件下，使用阳极极化试验在3.5％NaCl溶液中进行了阳极极化测试，研究了30CrNiMo8低合金钢的腐蚀行为。过程变量包括有效的屏幕设置参数，处理温度（550和580摄氏度），混合气体（N_2 / H_2的25/75和75/25）和在500 Pa压力下的处理时间（5和10小时）。通过X射线衍射（XRD），显微硬度测试，光学显微镜和扫描电子显微镜（SEM）研究了化合物层的结构和相组成。观察到ASPN处理的样品表面增强了耐腐蚀性，而筛孔设置的温度和/或孔尺寸增加了。

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