阳极氧化铝膜的耐蚀性能及光学透射性

来源期刊：有色金属2010年第4期

论文作者：王晓燕 翟秀静 张廷安 郑双

文章页码：27 - 29

关键词：金属材料； 多孔氧化铝膜； 耐腐蚀性； 光学透射性

Key words：metal material； porous alumina membrane； corrosion resistance； optical transmittance

摘    要：以硫酸电解液中阳极氧化制得的多孔氧化铝膜为研究对象,利用涡流测厚仪考察了不同pH值溶液中膜的耐腐蚀性,紫外测试分析了氧化铝膜的光学透射性。结果表明,氧化铝膜在中性及弱酸或弱碱性介质中耐腐蚀性能比较稳定。当pH值小于3时,氧化铝膜的失重率较高。当pH值大于11时,失重率也很大。波长小于360nm时多孔氧化铝膜的透射率较低,约10%以下,在波长360nm处曲线急剧上升,透射率陡增。当波长增加到400nm后,透射率随波长红移缓慢变化,最后进入相对稳定阶段。

Abstract: The porous alumina membrane made out of anodic oxidation in H₂SO₄ electrolyte is investigated,corrosion resistance of membrane in different pH medium is analyze by using eddy current sensor thickness and the optical transmission is measured by ultraviolet spectrophotometer.The results show that the corrosion resistance of alumina membrane is stable in neutral,weak-acid or weak alkali medium.When pH<3 and pH>11,mass loss of alumina membrane is biggish.When wavelength is less than 360nm,transmissivity of membrane is lower about 10%.Curve sharp is raised and transmissivity is increased when wavelength is 360nm.Then transmissivity is tardily increased with wavelength increase and step into stable stage.