涂镀板的平面腐蚀大多发生在划伤处，而划伤是涂镀板不可避免的现象，特别是在加工过程中，如果涂镀板本身有较好的抗刮痕性能，就能在很大程度上避免被划伤，从而提高其使用时间。镀镁铝锌板板具有独到的耐腐蚀性能，特别是切口保护性能。

Plane corrosion of coating board mostly occurs in scratches, and scratch is an inevitable phenomenon of coating board, especially in the processing process, if the coating board itself has good scratch resistance performance, it can avoid scratches to a large extent, so as to improve its use time.Magnesium coated aluminum zinc plate has unique corrosion resistance, especially cut protection performance.

镀层中所含的镁和铝的共同作用，会在长期的使用中在镀层的表面产生附着性极高的致密的氧化保护膜，将镀层与外部的腐蚀环境隔离开来，发挥隔离防腐的作用，防止镀层产生腐蚀。镁是比铝更活泼的金属，在空气中极其容易被氧化，固态镁形成的氧化膜也较致密，能有效地保护内部的组织，防止进一步被氧化。由于镁与铝不一样，在镀层中均匀而微细的分布，就使得氧化膜布满了整个镀层表面，使镀层中所有的组织都得到保护。

The combined action of magnesium and aluminum contained in the coating will produce a highly attached dense oxidation protective film on the surface of the coating in the long-term use, isolate the coating from the external corrosion environment, play the role of isolation and corrosion, and prevent corrosion of the coating.Magnesium is a more lively metal than aluminum, which is extremely easy to be oxidized in the air. The oxide film formed by solid magnesium is also relatively dense, which can effectively protect the internal tissue and prevent further oxidation.Because magnesium is different from aluminum, the uniform and fine distribution in the coating layer, the oxide film covers the whole coating surface, so that all the tissues in the coating are protected.

值得一提的是，镀镁铝锌板特别适合于耐酸的特殊领域，例如农场的禽舍、食槽、禽类粪便都是酸性的，须采用更耐酸洗腐蚀的锌铝镁板。

It is worth mentioning that magnesium-coated aluminum zinc plate is particularly suitable for the special areas of acid resistance, such as farm poultry house, trough, poultry feces are acidic, must be more acid pickling corrosion resistant zinc aluminum magnesium plate.