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HaiGang Yunyi
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Tianjin Haigang Steel Coil
Service first, quality assured. More dedicated and focused on crafting even better boards.
11
2020
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05
Do you know what the effect of passivation is?
Passivation refers to the corrosion products formed on a metal due to the action of certain media. If these products have a dense structure, they can form a thin film—often so thin that it is invisible—that tightly covers the metal’s surface, thereby altering the metal’s surface state and causing its electrode potential to shift dramatically toward the positive direction, resulting in a passivated, corrosion-resistant state. For example: Fe → Fe. 2+ Time standard Potential The potential shifts from -0.44 V to +0.5 to 1 V after passivation, thereby exhibiting corrosion-resistant metallic properties. This thin film is called the passivation film. Metal passivation can also occur spontaneously over time (such as the formation of aluminum oxide). In industrial applications, passivators—primarily oxidizing agents—are typically used to treat metals, forming a dense passivation film that slows down the rate of metal corrosion.
Passivation, galvanized strip steel passivation, galvanized strip steel, coil stock
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We primarily produce various products including galvanized strip steel, pickled strip steel, and cold-rolled strip steel. These products are widely used in industries such as construction, mechanical manufacturing, automotive, and household appliances.
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Company address:
Shuangtang High-end Hardware Products Industrial Park, Jinghai District, Tianjin City
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Corporate email:
tjhaigang@tjhaigang.com
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