| Applying ellipsometry to studying the effect of two kinds of rare earth metal salts on anodizing aluminum alloy |
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| 作者姓名： | HONG Quan QIAN Ying LI Lingjie ZHANG Shengtao College of Chemistry and Chemical Engineering Chongqing University Chongqing P. R. China |
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| 作者单位： | HONG Quan，QIAN Ying，LI Lingjie，ZHANG Shengtao College of Chemistry and Chemical Engineering，Chongqing University，Chongqing，400030，P. R. China |
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| 摘 要： | 1.IntroductionDuringthepastyears,avarietyofsurfacetreatmentshavebeenusedtoincreasecorrosionresistanceofaluminumalloys.SinceHintonandhiscolleaguesfirstreportedthecorrosioninhibitionwithrareearthmetalsaltsforAA7075aluminumalloys1],muchattentionhasbeenpaidtotheroleofrareearthadditivesintheareaofsurfacetreatmentsofaluminumanditsalloys.However,mostoftheseresearchesfocusedonrareearthconversioncoatingsformedbychemicalconversionmethods2-8],theapplicationofrareearthmetalsaltsinanodizingofaluminumall…
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| 关 键 词： | 铝合金 椭圆光度法 稀有土壤金属盐 阳极电镀 腐蚀抑制 表面处理 |
Applying ellipsometry to studying the effect of two kinds of rare earth metal salts on anodizing aluminum alloy |
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| HONG Quan,QIAN Ying,LI Lingjie,ZHANG Shengtao College of Chemistry and Chemical Engineering,Chongqing University,Chongqing,P. R. China.Applying ellipsometry to studying the effect of two kinds of rare earth metal salts on anodizing aluminum alloy[J].Journal of Chongqing University,2004,3(1):69-73. |
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| Authors: | HG Quan QIAN Ying Li Lingjie ZHANG Shengtao |
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| Institution: | College of Chemistry and Chemical Engineering,Chongqing University,Chongqing,400030,P.R.China |
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| Abstract: | The effects of rare earth metal salts (REMs), cerium(Ⅳ) salt and lanthanum (Ⅲ) salt, on the property of anodized coating of LD10 aluminum alloy are studied by corrosion tests including neutral salt spray test and copper accelerated acetic acid immersion test, polarization curves measurement, energy dispersion analyzer of X-Ray(EDAX) analysis, and in situ ellipsometry. The results show that the addition of either of the two REMs in anodizing solution hardly changes the composition of an anodized coating, while increases the thickness of barrier part and reduces the porosity of porous part, which contributed to the improvement of the corrosion resistance of the anodized coating. The results also demonstrate that the effect of cerium salt was better than that of lanthanum salt. |
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| Keywords: | ellipsometry rare earth metal salts anodizing aluminum alloy |
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