Microstructure induced galvanic corrosion evolution of SAC305 solder alloys in simulated marine atmosphere

doi:10.1016/j.jmst.2020.03.024

CORC > 金属研究所 > 中国科学院金属研究所

	Microstructure induced galvanic corrosion evolution of SAC305 solder alloys in simulated marine atmosphere
	Wang, Mingna 2; Qiao, Chuang 1,3; Jiang, Xiaolin 1; Hao, Long 3,4; Liu, Xiahe 1
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2020-08-15
卷号	51 页码:40-53
关键词	SAC305 solder Marine atmosphere Galvanic corrosion In-situ EIS Comb-like electrode
ISSN号	1005-0302
DOI	10.1016/j.jmst.2020.03.024
通讯作者	Hao, Long(chinahaolong@126.com)
英文摘要	Motivated by the increasing use of Sn-3.0Ag-0.5Cu (SAC305) solder in electronics worked in marine atmospheric environment and the uneven distribution of Ag3Sn and Cu6Sn5 intermetallic compounds (IMCs) in beta-Sn matrix, comb-like electrodes have been designed for in-situ EIS measurements to study the microstructure induced galvanic corrosion evolution of SAC305 solder in simulated marine atmosphere with high-temperature and high-humidity. Results indicate that in-situ EIS measurement by comb-like electrodes is an effective method for corrosion evolution behavior study of SAC305 solder. Besides, the galvanic effect between Ag3Sn IMCs and beta-Sn matrix can aggravate the corrosion of both as-received and furnace-cooled SAC305 solder as the exposure time proceeds in spite of the presence of corrosion product layer. Pitting corrosion can be preferentially found on furnace-cooled SAC305 with larger Ag3Sn grain size. Moreover, the generated inner stress during phases transformation process with Sn3O(OH)(2)Cl-2 as an intermediate and the possible hydrogen evolution at local acidified sites are supposed to be responsible for the loose, porous, cracked, and non-adherent corrosion product layer. These findings clearly demonstrate the corrosion acceleration behavior and mechanism of SAC305 solder, and provide potential guidelines on maintenance of microelectronic devices for safe operation and longer in-service duration. (C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目	National Natural Science Foundation of China[51601057]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000541159900005
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/139480]
专题	金属研究所_中国科学院金属研究所
通讯作者	Hao, Long
作者单位	1.Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China 2.Hebei Normal Univ Sci & Technol, Dept Phys, Qinhuangdao 066004, Hebei, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Environm Corros Ctr Mat, Shenyang 110016, Peoples R China 4.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Wang, Mingna,Qiao, Chuang,Jiang, Xiaolin,et al. Microstructure induced galvanic corrosion evolution of SAC305 solder alloys in simulated marine atmosphere[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2020,51:40-53.
APA	Wang, Mingna,Qiao, Chuang,Jiang, Xiaolin,Hao, Long,&Liu, Xiahe.(2020).Microstructure induced galvanic corrosion evolution of SAC305 solder alloys in simulated marine atmosphere.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,51,40-53.
MLA	Wang, Mingna,et al."Microstructure induced galvanic corrosion evolution of SAC305 solder alloys in simulated marine atmosphere".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 51(2020):40-53.