Effect of Plasma Surface Pretreatment on Ce³⁺-Doped GPTMS-ZrO₂ Self-Healing Coatings on Aluminum Alloy

Table 1

𝑅_𝑝 fit data for the results obtained from potentiodynamic polarization measurements.

Sample	𝐸corr (volts)	𝐼corr (A/cm^2)	𝑅𝑝 (ohms/cm^2)
Bare Al-1 h	−0.772	6.079𝐸−6	4291.2
Bare Al-24 h	−0.788	4.728𝐸−6	5517.4
Al-GPZ-1 h	−0.838	1.828𝐸−8	1.426𝐸6
Al-GPZ-24 h	−0.781	2.741𝐸−7	95159
Al-GPZ-Ce-1 h	−0.824	1.758𝐸−7	1.483𝐸5
Al-GPZ-Ce-24 h	−0.818	2.655𝐸−7	98225
Al-GPZ-plasma-1 h	−0.819	3.950𝐸−8	6.603𝐸5
Al-GPZ-plasma-24 h	−0.754	4.413𝐸−7	59109
Al-GPZ-Ce-plasma-1 h	−0.802	6.499𝐸−7	40135
Al-GPZ-Ce-plasma-24 h	−0.761	2.390𝐸−7	1.091𝐸5