Effects of temperature on microstructures of MSA-type electroplating solution: a coarse-grained molecular dynamics
Teng Li1,2, Ce Liang1, Kaifeng Yu1
1Key Laboratory of Automobile Materials, Ministry of Education and College of Materials Science and Engineering, Jilin University, Changchun, Jilin 130025, China. liangce@jlu.edu.cn.
Temperature significantly impacts electroplating solutions. Low temperatures cause component aggregation, hindering substrate adsorption, while optimal temperatures promote it, but excessively high temperatures cause desorption, crucial for precise electroplating.
Area of Science:
- Materials Science
- Electrochemistry
- Computational Chemistry
Background:
- Methanesulfonic acid (MSA)-type electroplating solutions are vital for metal deposition.
- Understanding solution microstructure and component adsorption is key to controlling plating quality.
Purpose of the Study:
- To investigate the effect of temperature on the microstructure of an MSA-type electroplating solution.
- To elucidate the adsorption behavior of key components (Sn(MSA)2, MSA, APEO, CA) on a substrate at different temperatures.
Main Methods:
- Coarse-grained molecular dynamics simulations were employed.
- The study analyzed component interactions and adsorption at varying temperatures.
Main Results:
- Low temperatures lead to ionic clustering and micelle formation (APEO, CA), hindering adsorption.
- Intermediate temperatures promote the adsorption of ions, surfactants, and brighteners.
- High temperatures cause desorption due to excessive kinetic energy.
Conclusions:
- Temperature exhibits a non-monotonic effect on adsorption strength.
- Low temperatures are suitable for reprocessing/recycling.
- Intermediate temperatures are optimal for substrate adsorption of key components, guiding precise electroplating development.
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