铁锈是什么成分,什么颜色⼀

2025-03-15 10:26:40
推荐回答(2个)
回答1:

当一滴雨水落到一块光亮的铁的表面时,短时间内水滴保持着清洁。然而过了不久以后,铁和水中的氧开始化合,形成氧化铁,即铁锈。水滴将变成微红色,铁锈则悬浮在水中。当水滴蒸发的时候,铁锈留在表面上,形成了微红色的锈层。
其实,主要的钢铁的腐蚀是电化学腐蚀
钢铁在潮湿空气里,其表面因吸附作用而覆盖一层极薄的水膜、水微弱电离产生少量H+和OH-,同时由于空气中CO2的溶解,水里H+增多.......

回答2:

铁锈是红棕色。
铁锈,中药名。又名铁衣。为铁置于空气中氧化后生成的红褐色锈衣。全国各地均产。具有清热解毒,镇心平肝之功效。主治疔疮肿毒,漆疮,口疮,重舌,疥癣,烫伤,毒虫螫伤,脚气,癫痫。
治疔疮,用多年墙内或泥土中锈钉,洗净,以灰火内煅,入醋内淬,待冷,用刀刮钉锈,又于火内煅红,入醋淬,仍前刮末,再三如此煅淬,刮末,用纱帛细罗包裹。遇人有此证,略将疮口拨开,挑药末在内,不以是为膏。

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