The results indicated that the dejects was caused by pitting corrosion of impurity element iron in silver coin by environmental chloride compound.

 
  • 结果表明,在银币缺陷部位的腐蚀坑内存在以铁元素为主的物质,基材中的铁元素与外界的氯引起银币的腐蚀,造成了表面缺陷。
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