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Microstructure induced galvanic corrosion evolution of SAC305 solder alloys in simulated marine atmosphere
Wang, Mingna1; Qiao, Chuang2,3; Jiang, Xiaolin2; Hao, Long3,4; Liu, Xiahe2
Corresponding AuthorHao, Long(chinahaolong@126.com)
2020-08-15
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume51Pages:40-53
AbstractMotivated 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.
KeywordSAC305 solder Marine atmosphere Galvanic corrosion In-situ EIS Comb-like electrode
Funding OrganizationNational Natural Science Foundation of China
DOI10.1016/j.jmst.2020.03.024
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51601057]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000541159900005
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/139481
Collection中国科学院金属研究所
Corresponding AuthorHao, Long
Affiliation1.Hebei Normal Univ Sci & Technol, Dept Phys, Qinhuangdao 066004, Hebei, Peoples R China
2.Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, 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
Recommended Citation
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.
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