铝及其合金在国民经济中占有很重要的地位,应用极为广泛。但铝制品的耐蚀性和外观若不经特种工艺处理,是不能满足使用要求的。因此,对铝制品一般要采用氧化或电镀的方法来提高其防护装饰性能。众所周知,欲获得高反射系数的铝制品,除了要机械抛光外,还必须进行化学或电化学抛光。从一九三○年将电解抛光用于铝制品的装饰性阳极氧化工艺以来,到目前为止,在现行工艺中,用得较普遍的电解或化学抛光溶液,一般有下列几种类型的酸溶液: Aluminum and its alloys occupy a very important position in the national economy and are widely used. However, corrosion resistance and appearance of aluminum products without special treatment, can not meet the requirements. Therefore, the aluminum products generally use oxidation or electroplating methods to improve its protective decorative properties. As we all know, to get high reflectance of aluminum products, in addition to mechanical polishing, but also must be chemical or electrochemical polishing. From the electrolytic polishing in 1930 to the decorative anodization of aluminum products, so far in the current process, the more common electrolytic or chemical polishing solution, there are generally the following types of acid solution :