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Effect of nitrogen on corrosion behaviour of a novel high nitrogen medium-entropy alloy CrCoNiN manufactured by pressurized metallurgy
Feng H; Li HB; Wu XL(武晓雷); Jiang ZH; Zhao S; Zhang T; Xu DK; Zhang SC; Zhu HC; Zhang BB; Yang MX(杨沐鑫)
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
2018-10-01
Volume34Issue:10Pages:1781-1790
ISSN1005-0302
Abstract

A 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.

KeywordMedium-entropy alloy Nitrogen Pitting corrosion Passive film Metastable pitting
DOI10.1016/j.jmst.2018.03.021
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000438131700009
WOS KeywordDUPLEX STAINLESS-STEEL ; CRITICAL PITTING TEMPERATURE ; PASSIVE FILMS ; SEMICONDUCTING PROPERTIES ; AISI 304-STAINLESS-STEEL ; RESISTANCE ; 316L ; NI ; NICKEL ; XPS
WOS Research AreaMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China [51434004, U1435205, 51774074] ; Transformation Project of Major Scientific and Technological Achievements in Shenyang [Z17-5-003]
CSCD IDCSCD:6335108
Classification一类
Ranking1
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77937
Collection非线性力学国家重点实验室
Affiliation1.Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China
2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
3.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Feng H,Li HB,Wu XL,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 H.,Li HB.,Wu XL.,Jiang ZH.,Zhao S.,...&Yang MX.(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 H,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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