The corrosion behavior of Mg-Nd binary alloys in the harsh marine environment

doi:10.1016/j.jma.2019.12.010

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	The corrosion behavior of Mg-Nd binary alloys in the harsh marine environment
	Jiang, Quantong 1,2,3; Lu, Dongzhu 1,2,3; Wang, Ning 1,2,3; Wang, Xiutong 1,2,3; Zhang, Jie 1,2,3; Duan, Jizhou 1,2,3; Hou, Baorong 1,2,3
刊名	JOURNAL OF MAGNESIUM AND ALLOYS
	2021-01-15
卷号	9 期号:1 页码:292-304
关键词	Magnesium alloy Corrosion South China sea environment
ISSN号	2213-9567
DOI	10.1016/j.jma.2019.12.010
通讯作者	Jiang, Quantong(jiangquantong@qdio.ac.cn) ; Zhang, Jie(zhangjie@qdio.ac.cn)
英文摘要	The corrosion behavior of Mg-Nd binary alloys in the harsh South China Sea environment was researched by scanning electron microscopy, energy-dispersive spectrometry and X-ray diffraction analysis. In order to explain the corrosion mechanism, corrosion resistance was analyzed by weight loss rate and electrochemical measurement in the laboratory. With a continuous enlargement of Nd-content, Mg12Nd phases increased and multiplied. The weight loss rate of Mg-0.5Nd alloy was 0.0436 mg.cm(-2).y(-1) (0.0837 mm.y(-1)), whereas that of Mg-1.5Nd alloy was 0.0294 mg.cm(-2).y(-1) (0.0517 mm.y(-1)) during the exposure corrosion in the South China Sea site. The mechanical strength of Mg-1.5Nd alloy was 148 MPa before the exposure in the harsh marine environment, while the residual mechanical strength was merely about 94 MPa after the exposure test. Both Mg-1.5Nd alloy and Mg-1.0Nd alloy occurred the brittle fracture, which resulted that the elongation was nearly equal to zero. The self-corrosion current density demonstrated that degradation rate of Mg-Nd binary alloys was as follows : Mg-0.5Nd>Mg-1.0Nd>Mg-1.5Nd. For the South China Sea corrosion site, a large amount of sea salts exited in the atmospheric environment. Due to the heavy rainfall and high humidity, sodium chloride in the atmospheric environment dissolved, more serious electrochemical corrosion occurred on the surface of Mg-Nd binary alloys. (C) 2020 Published by Elsevier B.V. on behalf of Chongqing University.
资助项目	Fundamental Research Project of Technology Program of Qingdao[17-1-1-76-JCH] ; Shandong Provincial Natural Science Foundation[ZR201910230421] ; National Natural Science Foundation of China for Exploring Key Scientific Instrument[41827805]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	KEAI PUBLISHING LTD
WOS记录号	WOS:000634519800023
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/170344]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者	Jiang, Quantong; Zhang, Jie
作者单位	1.Qingdao Natl Lab Marine Sci & Technol, Open Studio Marine Corros & Protect, 1 Wenhai Rd, Qingdao 266235, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Environm Corros & Biofouling, 7 Nanhai Rd, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, 7 Nanhai Rd, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Quantong,Lu, Dongzhu,Wang, Ning,et al. The corrosion behavior of Mg-Nd binary alloys in the harsh marine environment[J]. JOURNAL OF MAGNESIUM AND ALLOYS,2021,9(1):292-304.
APA	Jiang, Quantong.,Lu, Dongzhu.,Wang, Ning.,Wang, Xiutong.,Zhang, Jie.,...&Hou, Baorong.(2021).The corrosion behavior of Mg-Nd binary alloys in the harsh marine environment.JOURNAL OF MAGNESIUM AND ALLOYS,9(1),292-304.
MLA	Jiang, Quantong,et al."The corrosion behavior of Mg-Nd binary alloys in the harsh marine environment".JOURNAL OF MAGNESIUM AND ALLOYS 9.1(2021):292-304.