金属表面受周围介质的化学(或电化学)作用所引起的损坏,叫做金属的腐蚀。黄金的主要特性是在自然界中有很高的稳定性,抗腐蚀性很强。所以古人说:“黄金入火百炼不消,埋之毕天不朽”,“五金黄为长,久埋不生衣,百炼不轻……”。这就是黄金的高贵作用经久不衰的原因。黄金有其稳定的一面,但在另一种情况下也有不稳定的一面。 Metal surface by the surrounding medium chemical (or electrochemical) damage caused by the role, called the metal corrosion. The main characteristic of gold is the high stability in nature, strong corrosion resistance. Therefore, the ancients said: “There is no need to pour in gold into the sky and immerse it in immortality for a long time.” This is why the noble role of gold is enduring. Gold has its own side of stability, but in the other case it has its own side of instability.