Corrosion Protection of a SiCp/ZL101 Composites by Using Plasma Electrolytic Oxidation Method

Shi Hai Cui; Hong Tao Tang; Jian Yu Li; Jian Min Han

doi:10.4028/www.scientific.net/AMR.79-82.1071

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 79-82Corrosion Protection of a SiCp/ZL101 Composites by...

Corrosion Protection of a SiCp/ZL101 Composites by Using Plasma Electrolytic Oxidation Method

Abstract:

A dense ceramic coatings with a thickness of 95μm was fabricated on a SiCp/ZL101 aluminum composites by using a plasma electrolytic oxidation(PEO) method. The XRD analysis showed that the PEO coating was mainly composed of α-Al2O3 γ-Al2O3 and mullite.The corrosion resistance of the PEO coatings and SiCp/ZL101 aluminum composites was estimated by the immersion test, salt spray test and electrochemical test. All the test results showed that the corrosion resistance of the composite was improved by the existence of the ceramic coating.