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为什么青铜宝剑不会生锈?

本站新(短)域名:xiguashuwu.com

为什么青铜宝剑不会生锈?

chu土文wu中,有一些已在地下足足埋藏了几千年的青铜宝剑,剑shen毫无锈迹而且仍然光彩夺目、锋利无比,见者无不啧啧称奇。青铜,也就是铜锡合金。锡是一zhong抗锈能力很qiang的金属,因此,青铜的抗蚀防锈本领自然要比铁qi大得多。不过更主要的还在于,古代青铜宝剑的表面都被作过特殊的chu1理。如湖北江陵chu土的越王勾践剑,剑shen上的黑se菱形格子hua纹及黑se剑格,是经过硫化chu1理的;陕西临潼发现的秦朝古剑,其表面chu1理则采用更为先进的铬盐氧化法。这些chu1理会在剑的表面生成薄薄一层极其致密的金属氧化mo,严密地覆盖在剑的表面,使内bu的金属不暴lou,因而也就不会被锈蚀了。

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