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Effect of nitrogen on corrosion behaviour of a novel high nitrogen medium-entropy alloy CrCoNiN manufactured by pressurized metallurgy
Feng Hao1; Li Huabing1; Wu Xiaolei2; Jiang Zhouhua1; Zhao Si1; Zhang Tao3; Xu Dake3; Zhang Shucai1; Zhu Hongchun1; Zhang Binbin1; Yang Muxin2
2018
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume34Issue:10Pages:1781-1790
AbstractA novel high nitrogen medium-entropy alloy CrCoNiN, which had higher strength and slightly lower ductility than CrCoNi alloy, was successfully manufactured by pressurized metallurgy. The microstructure and corrosion behaviour were investigated by microscopic, electrochemical and spectroscopic methods. The results indicated that nitrogen existed in the form of Cr2N precipitates and uniformly distributed N atoms, and nitrogen alloying significantly refined the grain size. Besides, nitrogen enriched on the outmost surface of passive film and metal/film interface as ammonia (NH3 and NH4+) and CrN, respectively. The significant improvement of corrosion resistance of CrCoNiN was attributed to the lower metastable pitting susceptibility together with thicker, less defective and more compact passive film. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
Other AbstractA novel high nitrogen medium-entropy alloy CrCoNiN, which had higher strength and slightly lower ductility than CrCoNi alloy, was successfully manufactured by pressurized metallurgy. The microstructure and corrosion behaviour were investigated by microscopic, electrochemical and spectroscopic methods. The results indicated that nitrogen existed in the form of Cr_2 N precipitates and uniformly distributed N atoms, and nitrogen alloying significantly refined the grain size. Besides, nitrogen enriched on the outmost surface of passive film and metal/film interface as ammonia (NH_3 and NH_4~+) and CrN, respectively. The significant improvement of corrosion resistance of CrCoNiN was attributed to the lower metastable pitting susceptibility together with thicker, less defective and more compact passive film.
KeywordDUPLEX STAINLESS-STEEL CRITICAL PITTING TEMPERATURE PASSIVE FILMS SEMICONDUCTING PROPERTIES AISI 304-STAINLESS-STEEL RESISTANCE 316L NI NICKEL XPS Medium-entropy alloy Nitrogen Pitting corrosion Passive film Metastable pitting
Indexed ByCSCD
Language英语
Funding Project[National Natural Science Foundation of China] ; [Transformation Project of Major Scientific and Technological Achievements in Shenyang]
CSCD IDCSCD:6335108
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/150331
Collection中国科学院金属研究所
Affiliation1.东北大学
2.中国科学院
3.中国科学院金属研究所
Recommended Citation
GB/T 7714
Feng Hao,Li Huabing,Wu Xiaolei,et al. Effect of nitrogen on corrosion behaviour of a novel high nitrogen medium-entropy alloy CrCoNiN manufactured by pressurized metallurgy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2018,34(10):1781-1790.
APA Feng Hao.,Li Huabing.,Wu Xiaolei.,Jiang Zhouhua.,Zhao Si.,...&Yang Muxin.(2018).Effect of nitrogen on corrosion behaviour of a novel high nitrogen medium-entropy alloy CrCoNiN manufactured by pressurized metallurgy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,34(10),1781-1790.
MLA Feng Hao,et al."Effect of nitrogen on corrosion behaviour of a novel high nitrogen medium-entropy alloy CrCoNiN manufactured by pressurized metallurgy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 34.10(2018):1781-1790.
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