Structrure of Al2O3 Ceramic Coating on Super Alloy Prepared by Cathodic Plasma Electrolytic Oxidation

Yun Long Wang; Miao Wang; Yue Mei Qin; Xing Feng Shi; Hui Rong Guo; Zi Juan He

doi:10.4028/www.scientific.net/AMR.690-693.2137

Paper Titles

Effects of Carrier Gases on the Microstructures and Properties of Ti Coating Layers Manufactured through the Cold Spraying
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Influences of Surface Nanocrystallization Induced by High-Energy Spot Peening on Microstructure and Properties of Magnesium Alloy
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Investigations of Wetting Properties of Stainless Steel by Molten Multi-Component Oxides
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Polymer Mixtures as Colon Targeted Drug Delivery Systems
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Structrure of Al₂O₃ Ceramic Coating on Super Alloy Prepared by Cathodic Plasma Electrolytic Oxidation
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Study on the Surface Plasma Hardening Treatment and Anti-Penetration Mechanism of Armor Steel
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The Study on Preparation and Apply of Ni-Co-P Alloy Coating
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Electroless Nickel-Phosphorus Plating on TiB₂ Powder
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Phase Evolution and Mechanical Properties of Cr-C Coatings Deposited by Reactive Unbalanced Magnetron Sputtering Process
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 690-693Structrure of Al2O3 Ceramic Coating on Super Alloy...

Structrure of Al₂O₃ Ceramic Coating on Super Alloy Prepared by Cathodic Plasma Electrolytic Oxidation

Abstract:

Al₂O₃ceramic coating was successfully prepared on GH132 super alloy by cathodic plasma electrolytic oxidation in (NO₃)₃_·9H₂O electrolyte. The structure and chemical composition of the coatings were characterized. The results showed that the as prepared coating was composed of Al₂O₃ crystal, including much α-Al₂O₃ andsomeγ-Al₂O₃two types of Al₂O_3. A few Fe elements entered into in the substrate and nearly no other elements were found in the coating surface. The Al₂O_3. coating showed coarse surface and there were some small pits on the surface. The diameters of pits were not more than 20 um. The thickness of coating was about 50μm.