Ⅰ什么是腐蚀大多数金属露置空气中,尤其是潮湿的空气中,就起变化,失去光泽,大都是由于空气使之氧化。金和铂是不会氧化的。有些金属容易受空气中的二氧化炭的影响,在面上盖了一薄层的氧化物和炭酸盐。这些薄层有的是软而松如锌,有的是硬而坚如铅和铝。铁在湿空气中平常温度时成软的 I What is Corrosion? Most metals exposed to air, especially humid air, change and lose their luster, mostly due to the oxidation of air. Gold and platinum are not oxidized. Some metals are susceptible to the carbon dioxide in the air, covering the surface with a thin layer of oxides and carbonates. Some of these thin layers are soft and loose like zinc, and some are hard and strong like lead and aluminum. Iron softens at normal temperatures in humid air