镀镁铝锌板具有独到的耐腐蚀性能，特别是切口保护性能。

Magnesium-coated aluminum-zinc plate has a unique corrosion resistance performance, especially the incision protection performance.

镀镁铝锌板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 of magnesium plating aluminum zinc plate 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 anticorrosion, 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 more 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.

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，从而提高其使用寿命。

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 service life.

镀锌铝镁板适应在室外长期使用的场合，比如高速护栏，要求产品规格较厚、表面镀层厚，还可以采用连续热镀锌铝镁的方法，这样的产品还有应用于太阳能设备支架、桥梁构件等等。

Galvanized aluminum magnesium plate for outdoor long-term use, such as high-speed guardrail, the requirements of product specifications thick, thick surface coating, can also use continuous hot galvanized aluminum magnesium method, such products are also used in solar equipment support, bridge components and so on.