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鋅易溶于酸，也能溶于堿，故稱它為兩性金屬。鋅在干燥的空氣中幾乎不發(fā)生變化。在潮濕的空氣中，鋅表面會生成致密的堿式碳酸鋅膜。

在含二氧化硫、硫化氫以及海洋性氣氛中，鋅的耐蝕性較差，尤其在高溫高濕的氣氛里，鋅鍍層極易被腐蝕。鋅的標準電極電位為-0.76V，

對鋼鐵基體來說，鋅鍍層屬于陽極性鍍層，它主要用于防止鋼鐵的腐蝕，其防護性能的優(yōu)劣與鍍層厚度關系甚大。鋅鍍層經(jīng)鈍化處理、

染色或涂覆護光劑后，能提高其防護性和裝飾性。

Zinc is easily soluble in acid, but also in alkali, so it is called an amphotropic metal.Zinc changes very little in the dry air.In humid air,

the zinc surface produces a dense alkaline zinc carbonate membrane.In the atmosphere containing sulfur dioxide, hydrogen sulfide and Marine atmosphere,

zinc corrosion resistance is poor, especially in the high temperature and high humidity atmosphere, zinc coating is easy to corrosion.

The standard electrode potential of zinc is-0.76V. For the steel matrix, the zinc coating belongs to the anodic coating,

which is mainly used to prevent the corrosion of steel, and the quality of its protective performance has a lot to do with the coating thickness.

The zinc coating can improve its protective and decorative properties after passivation, staining, or coating with a photoprotective agent.