Study on multi-element Penetrating Property of low Temperature gas on the Surface of 27SiMn steel
The article uses multi-element penetrating technology of low temperature gas to let N, C and O elements simultaneously penetrate into the surface of 27SiMn steel to form a modified layer, thus improving the surface performance of materials and acquiring high hardness, wearing resistance and erosion resistance. Using the scanning electron microscopy (SEM) to detect the microstructure and the depth of infiltrating layer, use microhardness instrument to measure the microhardness of infiltrating layer, use MFT-R4000 repeated friction wear tester to detect the wearing resistance of infiltrating layer and use electrochemical corrosion workstation to study the erosion resistance of infiltrating layer. The result: the modified layer of 27SiMn surface via multi-element penetrating is composed of loose layer, white bright layer and transition layer, with the depth of approximately 240um. The hardness of white bright layer is the highest and the microhardness is 820HV. The friction and wear experiment demonstrates the friction coefficient of 27SiMn surface via multielement penetrating decreases and the wearing resistance significantly improves. By electrochemical corrosion detection, the erosion resistance of 27SiMn surface via multi-element penetrating is distinctly better than the substrate and the erosion rate decreases.
multi-element penetrating 27SiMn microhardness wearing resistance erosion resistance
ZHOU Hai CHEN Fei WAN Han-cheng DAI Zhi-wang
Department of materials science and engineering, Beijing Institute of petrochemical technology, Beijing 102617
国际会议
沈阳
英文
317-321
2009-08-24（万方平台首次上网日期，不代表论文的发表时间）