Effect of Through Cage on Active Screen Plasma Nitriding Properties
Effect of Through Cage on Active Screen Plasma Nitriding Properties
复制标题
贯穿式保持架对活性屏蔽等离子渗氮性能的影响
DOI：
10.2320/matertrans.mra2008431
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发表时间：
2009
影响因子：
1.2
通讯作者：
K. Akamatsu
中科院分区：
文献类型：
--
作者：
A. Nishimoto;A. Tokuda;K. Akamatsu
采用不同不锈钢保持架对低碳钢S15 CK进行活性屏等离子渗氮，研究保持架对渗氮性能的影响。三种类型的奥氏体不锈钢笼，如管，箔，和丝网，被使用。样品在50%N2 + 50%H2气体中在773 K和630 Pa下处理18 ks。通过表面粗糙度测试、光学显微镜、扫描电子显微镜、X射线衍射和显微硬度测试对氮化样品进行了表征。在所有样品氮化的ASPN过程中，“边缘效应”被完全消除，而硬度和厚度的表面层是可比的，从DC等离子体渗氮。此外，在ASPN过程中使用的筛网的比较显示，筛孔尺寸对表面性能，如显微组织和硬度有轻微的影响。[doi：10.2320/matertrans.MRA2008431]
Low carbon steel S15CK was nitrided by active screen plasma nitriding (ASPN) using various stainless steel cages to investigate the effect of the cage on the nitriding properties. Three types of austenitic stainless steel cages, such as pipe, foil, and wire mesh, were used. The sample was treated for 18 ks at 773 K under 630 Pa in 50% N2 + 50% H2 gases. The nitrided samples were characterized by surface roughness tests, optical microscopy, scanning electron microscopy, X-ray diffraction, and microhardness testing. In all samples nitrided by the ASPN process, the ‘edging effect’ was completely eliminated whereas hardness and thickness of the surface layer were comparable with those obtained from the DC plasma nitriding. Moreover, a comparison of the screens used in the ASPN process revealed that the screen hole size had a slight influence on surface properties such as microstructure and hardness. [doi:10.2320/matertrans.MRA2008431]