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