Surface Modification of Tool Steel by Atmospheric-Pressure Plasma Nitriding Using Dielectric Barrier Discharge
Surface Modification of Tool Steel by Atmospheric-Pressure Plasma Nitriding Using Dielectric Barrier Discharge
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介质阻挡放电大气压等离子渗氮对工具钢进行表面改性
DOI：
10.2474/trol.11.460
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发表时间：
2016
期刊：
影响因子：
1
通讯作者：
P. Abraha
中科院分区：
文献类型：
--
作者：
J. Miyamoto;Takashi Inoue;K. Tokuno;H. Tsutamori;P. Abraha
采用介质阻挡放电法对工具钢进行常压离子渗氮，获得了均匀的渗氮层。本文研究了常压离子渗氮层的摩擦学性能。结果表明，工具钢常压等离子渗氮后，其表面硬度比芯材提高了一倍以上。渗层表面硬度和渗层厚度均匀，分别为1300HV和30m。此外，常压等离子体氮化处理后的样品磨损率比未处理样品降低了25倍以上。通过对产生的等离子体的光发射光谱观测，只探测到了氮秒正极系统和Ar的发射。因此，我们认为本研究的氮化是由于非激发态的氮、氨等像气体一样在样品上解离而引起的
The plasma nitriding of tool steel under atmospheric-pressure was performed using a dielectric barrier discharge method, resulting in the formation of a uniform nitrided layer. In this study, the tribology properties of the nitrided layer generated by atmospheric-pressure plasma nitriding were investigated. The results showed that the surface hardness of the tool steel nitrided by the atmospheric-pressure plasma method were increased by more than twofold compared with that of the core material. The surface hardness and the thickness of the nitrided layer were uniform, with values of 1300 HV and 30 m, respectively. In addition, the wear rate of the sample nitrided by the atmospheric-pressure plasma method was decreased by more than 25 times compared with that of the untreated sample. Only the emission of the N 2 second positive system and Ar were detected by the optical emission spectroscopic observation of the generated plasma. For this reason, we consider that the nitriding of this research caused by the dissociation of nonexcited N 2 , NH 3 , NH 2 , and NH etc. on the sample like a gas