Insulation Treatment of 2A12 Aluminum Alloy Surface by Plasma Electrochemical Oxidation
The 2A12 aluminum alloy surface is treated by plasma electrochemical oxidation (PEO) in alkaline solution. X-ray Diffraction (XRD) is used to analyze the phases of PEO coatings. Scanning Electron Micrograph (SEM) is used to investigate the compactness of PEO coatings. High resistance meter and voltage resistance meter are used to measured Electric resistance and breakdown field strength of PEO coatings respectively. The results show that the PEO coating is composed of α -Al2O3, γ-Al2O3 , etc, and they are all well-insulated substance which is profitable to insulation of 2A12 aluminum alloy. When the thickness of PEO is more than 60μm, porosity in the PEO coating is estimated not more than 15％. Electric resistivity of PEO coatings can reach as high as 1013 Ω·cm, and breakdown field strength of the PEO coatings can reach 72 V / μm.
Insulation Treatment Aluminum Alloy Plasma Electrochemical Oxidation Electric Resistance Breakdown Field Strength
Ming Liu Zhihua Sun Zhishen Wang Xiaoyun Zhang Feng Lu
Corrosion and Protection Laboratory, Beijing Institute of Aeronautical Materials,Beijing 100095, Chi Corrosion and Protection Laboratory, Beijing Institute of Aeronautical Materials, Beijing 100095, Ch
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
297-302
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）