鋁的冷封閉硫酸陽極氧化膜組成

Components of the Cold Sealed Films on Aluminium Anodired in Sulphuric Acid

摘要: 用超薄切片、透射電鏡、掃描電鏡、電子能譜和X射線相分析儀分別研究了鋁的硫酸陽極著色氧化膜,在冷封閉制度下的微觀組成。結果表明,著色陽極氧化膜在冷封閉4min之后,氧化膜的外表面層附近、表面層及深處都存在有封閉材料鎳。其相對含量逐步增大至9.244%;著色材料錫在氧化膜深處達到20.420%;氧化時鍵合的SO₄^2-在冷封閉時部分被放出,氧化膜深處的S含量從5%降至3%左右。鋁的硫酸陽極氧化膜經100min冷封閉,仍為非晶態物質。

Abstract: The micro Components formed anodic films on Al were studied by ultrathin section technology, TEM, SEM etc. The results show that after 4 min of cold sealing, Ni(as a sealing agent) can be found near the outer layer, surface layer and the deep place of the anodic films. Its relative content increases to 9.244%. The content of Tin (as a coloring agent) can reach to 20.42% in the deep places of the films, while the content of S in the same place decreases from about 5% to 3%. After 100 min of cold sealing, the films on Al are still amorphous substance.