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| Growth Mechanism of Boride Layer Formed via Plasma Electrolytic Borocarburizing on Surface of Low-carbon Steel |
| WANG Bin1, XUE Wenbin2,3, CHEN Lin2 , WEI Kejian2, WU Zhenglong4
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1 College of Arts and Science, Shanxi Agricultural University, Taigu 030801;
2 College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875;
3 Beijing Radiation Center, Beijing 100875;
4 Analytical and Testing Center, Beijing Normal University, Beijing 100875; |
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Abstract Q235 low carbon steel was treated by plasma electrolytic borocarburizing (PEB/C) technique in borax solution with glycerinum additive. At different treatment time, the structure and morphology of borocarburizing layer on Q235 low-carbon steel were investigated. The decomposition reaction of electrolyte and the growth mechanism of boride layer in the PEB/C process were emphatically discussed. The results show that the Q235 low-carbon steel forms a compact boride layer about 20 μm thick after 30 min PEB/C treatment at 330 V. The boride layer mainly consists of Fe2B phase, and the hardness of boride layer can reach 1 800HV. The growth process of boride layer in the PEB/C process involves initial stage, the generation of island boride and the uniform growth of boride layer.
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Published: 04 May 2018
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2017, Vol. 31 
