Insights into the high-sulphur aging of sintered silver nanoparticles: An experimental and ReaxFF study
D Hu and TJ Gu and Z Cui and S Vollebregt and XJ Fan and GQ Zhang and JJ Fan, CORROSION SCIENCE, 192, 109846 (2021).
In high power electronics packaging, sintered silver nanoparticle joints suffer from thermal-humidity- electricalchemical joint driven corrosion in extreme environments. In this paper, we conducted aging tests on sintered silver nanoparticles under high-temperature, high-humidity, and high-sulphur conditions. The results show that: (1) the sample under the dry high-sulphur conditions at a high temperature exhibited the highest degree of sulphidation; (2) Reactive force field (ReaxFF) molecular dynamics (MD) simulations of sintered silver nanoparticle sulphidation revealed the sulphidation layer was formed by silver atoms upward migration. This work paves the way for further investigation on sintered silver nanoparticles corrosion considering multi-physics coupling effects.
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