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Author(s): |
Jin-peng Sang, College of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, China, 212003
Yong-jun Chao, Wenzhou Vocational and Technical College, Wenzhou, China, 325035
Chu Yuan, College of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, China, 212003
Shao-guang Liu, College of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, China, 212003 Zhejiang Cadre New Material CO. LTD, Wenzhou, China, 325029
Ji-peng Yao, Zhejiang Cadre New Material CO. LTD, Wenzhou, China, 325029
Lai-ma Luo, Department of Materials Science and Engineering, Zhejiang University, Hangzhou, China, 310027
Yu-song Xu, College of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, China, 212003
Jian Li, Department of Materials Science and Engineering, Zhejiang University, Hangzhou, China, 310027 |
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Abstract: |
RE-containing FeMnCrNiAlBSi/Cr3C2 coatings were prepared on 20 steel substrate by high velocity arc spraying. Microstructure and properties of the coatings were studied by means of optical microscope, microhardness tester, scanning electron microscope and energy dispersion spectrum. The results show that FeMnCrNiAlBSi/Cr3C2 coatings characteristically consisted of successive layers contained solid solution phases, oxide phases and few pores. Compared with the coating which doesn’t contain RE, RE-containing FeMnCrNiAlBSi/Cr3C2 coating has the higher bond strength, cohesive strength, microhardness and high-temperature oxidation resistance. Both the two coatings have relatively excellent thermal shock resistance.
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