Table 2 Electrochemical corrosion data related to polarization curves of the magnesium alloy, the Ni-P coating, and the Ni-P-Al2O3 composite coatings
From: Deposition Process and Properties of Electroless Ni-P-Al2O3 Composite Coatings on Magnesium Alloy
Substrate and coatings | AZ91D | Ni-P | Ni-P-Al2O3 (1.7%) | Ni-P-Al2O3 (3.6%) | Ni-P-Al2O3 (4.2%) |
|---|---|---|---|---|---|
icorr (A/cm2) | 1.4 × 10−4 | 3.1 × 10−6 | 1.6 × 10−6 | 4.5 × 10−7 | 1.0 × 10−6 |
Ecorr (V) | − 1.46 | − 0.51 | − 0.47 | − 0.35 | − 0.41 |