Microstructure and mechanical properties of 17-4PH steel plasma nitrocarburized with and without rare earths addition
作者： Z. Sun , C.S. Zhang , M.F. Yan
DOI: 10.1016/J.MATDES.2013.09.030
关键词: Phase (matter) 、 Scanning electron microscope 、 Microstructure 、 Indentation hardness 、 Tribometer 、 Optical microscope 、 Materials science 、 Metallurgy 、 Layer (electronics) 、 Plasma
摘要: M50NiL steel was plasma nitrocarburized at 500° C with and without rare earth (RE) addition. The nitrocarburized layers were characterized by optical microscope, scanning electron microscope equipped with an energy dispersive X-ray analyzer, X-ray diffraction, hardness tests and pin-on-disc tribometer. The results show that the RE atoms can diffuse into M50NiL steel surface and change the surface morphology of the nitrocarburized layer. The incorporation of RE atoms increases the surface hardness of the nitrocarburized layer …
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