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首页> 外文会议>Characterization of minerals, metals, and materials 2018 >Evaluation of Two Different Pulsed Plasma Nitriding Conditions on Steel Properties
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Evaluation of Two Different Pulsed Plasma Nitriding Conditions on Steel Properties

机译：两种不同脉冲等离子渗氮条件对钢性能的评价

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The thermochemical treatment of Pulsed Plasma Nitriding is employed as an alternative to improve the surface properties of metals, such as: increase surface hardness, improve wear resistance, extend fatigue life and also create a barrier to the diffusion of hydrogen into the steel to reduce the susceptibility to hydrogen embrittlement. In this study, the effect of such treatment on ASTM A36 steel is analyzed through two different nitriding conditions: 5 h and 660 Pa for the first condition and 15 h and 720 Pa for the second one. In both cases, the temperature was held at 300 °C. Thus, in order to verify the results, Vickers hardness analysis and metallographic observation were carried out under an optical microscope. Only the second condition was able to achieve what was proposed, the formation of a uniform nitriding layer and an expressive increase of hardening on the surface.
机译：脉冲等离子渗氮的热化学处理被用作替代手段，以改善金属的表面性能，例如：增加表面硬度，改善耐磨性，延长疲劳寿命，并为氢扩散到钢中形成障碍以减少金属的腐蚀。对氢脆的敏感性。在这项研究中，通过两种不同的氮化条件分析了这种处理对ASTM A36钢的影响：第一种条件为5 h和660 Pa，第二种条件为15 h和720 Pa。在两种情况下，温度均保持在300°C。因此，为了验证结果，在光学显微镜下进行了维氏硬度分析和金相观察。只有第二种条件才能实现所提出的目标，即形成均匀的氮化层并明显增加表面的硬化。

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