| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10656279 | Journal of Alloys and Compounds | 2016 | 12 Pages |
Abstract
By conducting salt-spray tests, we studied the corrosion behaviour and mechanism of printed circuit boards with an immersion Ag surface finish (PCB-ImAg) in polluted environments that contain SO2 and Clâ. The polluted environment was similar to the polluted marine atmosphere environment in Qingdao China. A comparison of micrographs of the test specimens revealed that the test specimens containing SO2 and Clâ suffered more serious damage. The entire corrosion process resulted in unevenly distributed partial corrosion products at the initial stage. However, this distribution gradually became uniform. The Raman spectroscopic analysis results for the test specimens containing SO2 and Clâ show that the corrosion products mainly comprised Cu4(OH)6SO4, Cu2Cl(OH)3, Cu2O, Ag2O, Ag2CO3, Ag2SO3 and Ag2SO4.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Lidan Yan, Kui Xiao, Pan Yi, Chaofang Dong, Junsheng Wu, Chengliang Mao, Xiaogang Li,