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锌是一种银白色的有色重金属,较软、易压延富韧性,熔点较低(420℃),但加热至700℃也不发生氧化,耐酸碱腐蚀能力强。锌被广泛用作镀覆材料以延长钢、橡胶、木材的寿命。同时Zn也是制备黄铜、青铜、压铸合金的主要添加元素。除此之外,锌还用作塑料的活化剂和稳定剂。Zn在世界上的产量仅次于铝占第三位,约一半的锌用于制备防蚀镀层。然而近年来发展的锌铝铸造合金已将Zn的用途扩展到结构材料,代替铝铸件、球墨铸铁或可锻
Zinc is a silvery white non-ferrous heavy metal. It is softer and easier to be rolled and toughened. Its melting point is lower (420 ° C). However, it does not oxidize when heated to 700 ° C. It has strong acid and alkali corrosion resistance. Zinc is widely used as a plating material to extend the life of steel, rubber and wood. At the same time, Zn is also the main additive for preparing brass, bronze and die-casting alloys. In addition, zinc is also used as a plastic activator and stabilizer. Zn is the third largest producer of aluminum in the world and about half of zinc is used to make corrosion-resistant coatings. However, zinc-aluminum casting alloys developed in recent years have extended the use of Zn to structural materials instead of aluminum castings, ductile iron or forge