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铁生锈是非常普遍的现象。全世界钢铁工人每年辛辛苦苦炼出的钢铁,至少有10%以上是因为生锈而损失掉了!铁活泼的化学性质是它特别容易生锈的原因。铁与空气接触就会和其中的氧发生化学反应,使铁表面的分子变成氧化铁——铁锈。氧化铁是疏松的物质,生成后不久就会从铁的表面脱落,新暴露在空气中的铁继续氧化生锈。金属受到的这种破坏作用叫腐蚀。防止铁生锈的主要方法是在铁表面涂油漆或涂薄搪瓷,把铁表面密封起来,也可在铁里加入少量镍或铬等其他金属。
Iron rusting is a very common phenomenon. Every year more than 10% of the hardworking steel produced by steel workers worldwide is lost due to rust! The lively chemical nature of iron is why it is extremely rusty. Iron and air will contact with the oxygen chemical reaction, the iron surface molecules become iron oxide - rust. Iron oxide is a loose substance that is released from the surface of the iron shortly after it is generated, and the newly exposed iron in the air continues to oxidize and rust. This destruction of metal is called corrosion. The main method of preventing iron from rusting is to paint the surface of the iron with a thin enamel to seal the surface of the iron or to add a small amount of other metals such as nickel or chromium to the iron.