【摘要】 乌铜是云南古代人发明创造之一 ,迄今已有 2 0 0多年的历史。对它的成分和性能研究表明 :金是乌铜中必不可少的元素 ,只有金的存在才能表现出它的着色特性。加入适量的银可以降低金的含量而色度不变。乌铜具有和铜一样的晶体结构 ,也有着和铜相近的力学和加工性能 ,但是却有比铜好的抗盐雾腐蚀性。更多还原

【Abstract】 The black copper was invented by ancientor in Yunnan.So far it has more than two hundred years.Study of its composition and properties showed that the gold was a necessary element for colourating black for copper.Adding silver in the just amount can reduce content of gold but not change the colority.The mechanical and working properties of black copper were similar to the copper,but its resistance to corrosion of the salt and its vapor was better than copper.更多还原