Table 4. Average potential fitting results of PCB-Cu surface corrosion of particles with different particle sizes.

Particle size	1 μm	2 μm	5 μm	10 μm
Gaussian mean (V)	−0.9226	−0.7201	−0.1964	−0.0169
Standard deviation (V)	0.0299	0.0346	0.02922	0.0106