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Composition of nitric acid pickling corrosion inhibitor

Posted on September 6, 2023 By admin No Comments on Composition of nitric acid pickling corrosion inhibitor

Nitric acid pickling corrosion inhibitors are generally composed of the following components:

Nitric acid: Nitric acid is one of the most important components in nitric acid pickling corrosion inhibitors, which can react with metal substances to remove oxide layers, rust, and other pollutants on the surface. At the same time, nitric acid can also improve the roughness and surface area of metal surfaces, thereby enhancing their adhesion to subsequent treatment agents.

Copper ions: Nitric acid pickling corrosion inhibitors sometimes add a certain amount of copper ions as catalysts to accelerate chemical reactions. Copper ions can react with nitric acid and form a protective film on the metal surface, avoiding excessive etching and negative effects on the metal surface.

Fluoride: Nitric acid pickling corrosion inhibitors often contain a certain amount of fluoride (such as hydrogen fluoride or sodium fluoride) as corrosion inhibitors. Fluoride can form a thin film on the metal surface, thereby slowing down the etching speed and improving the smoothness and uniformity of the etched surface.

Surfactants and additives: Nitric acid pickling corrosion inhibitors may also contain some surfactants and additives, which are used to regulate the chemical properties and surface tension of liquids, thereby promoting the decontamination and etching of metal surfaces. These additives can also improve the stability of the liquid and prevent the formation of foam.

It should be noted that nitric acid pickling corrosion inhibitor is a strong acidic liquid. When using it, it is important to pay attention to safe operation, avoid contact with skin and eyes, and maintain good ventilation. At the same time, strict adherence to environmental regulations and relevant standards should be observed when handling waste liquid to prevent adverse effects on the environment.

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