Kinetics and mechanism of the sulfurization behavior of silver conductive material in automobile industry  

作　　者：Ze-Di Shi Le Zhang Yue-Long Ma Tian-Yuan Zhou Bing-Heng Sun Cen Shao Guo-Can Huang Shi-Tong Yin Su-Dan Hou Zeng-Wang Yang Hao Chen 

机构地区：[1]School of Physics and Electronic Engineering,Jiangsu Normal University,Xuzhou 221116,China [2]Jiangsu Xiyi Advanced Materials Research Institute of Industrial Technology,Xuzhou 221400,China [3]School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,China [4]Xuzhou All-To Optoelectronics Co.,Ltd.,Xuzhou 221116,China [5]Jiangsu Yunyi Electric Co.,Ltd.,Xuzhou 221116,China

出　　处：《Rare Metals》2022年第1期37-44,共8页稀有金属（英文版）

基　　金：This study was financially supported by the National Natural Science Foundation of China(Nos.61975070,51902143,61971207 and 61775088);the Key Research and Development Project of Jiangsu Province(Nos.BE2018062 and BE2019033);the Natural Science Foundation of Jiangsu Province(No.BK20191467);the Postgraduae Research&Practice Innovation Program of Jiangsu Province(No.SJCX20_0922);the International S&T Cooperation Program of Jiangsu Province(Nos.BZ2019063,BZ2020045 and BZ2020030);the Natural Science Foundation of Jiangsu Higher Education Institutes of China(Nos.19KJB430018 and 20KJA430003);the Special Project for Technology Innovation of Xuzhou City(Nos.KC19250,KC20201 and KC20244);the Open Project of State Key Laboratory of Advanced Materials and Electronic Components(No.FHR-JS-202011017).

摘　　要：As a functional material,silver was employed as the electrical contact material in automotive electronics due to the excellent conductivity.However,this material was prone to the atmospheric corrosion,resulting in the damage of structure and failure of devices.In this study,the corrosion behavior of conductive silver applied in printed circuit board was explored,and it was found that the strongest environmental factors(SO2 pollutants,temperature and relative humidity(RH))influenced the structural damage of material on the viewpoints of kinetics and mechanism.Compared with other factors,temperature(55℃)was the dominating factor causing the structural change of conductive material under operation environments,and the corrosion product on the surface reached the maximum at the thickness of different corrosion product layer of dfilm=15.56910-5 lm.However,SO2 pollutants and RH accordingly increase the thickness of corrosion products(Ag2S and Ag_(2)SO_(4))during corrosion process,due to the promotion of the diffusion of corrosive species.Therefore,this study not only significantly reinforces the understanding of the structural damage of conductive material among the different environmental factors,but also provides an important guide to corrosion prevention design and materials selection in actual manufacturing.

关 键 词：CORROSION SILVER BEHAVIOR 

分 类 号：U465[一般工业技术—材料科学与工程] TB34[机械工程—车辆工程]