Thermal Spray Material Selection Guide（update）

       

Corrosion-resistant coatings mainly include the following:

Atmospheric corrosion resistant coating

This type of coating is resistant to corrosion under conditions where the metal or alloy is exposed to the atmosphere outdoors or indoors, but cannot be immersed in liquids, and the coating is resistant to corrosion in the atmosphere by wind, rain, sunlight and other climatic conditions. All quality assessments are based on results obtained from outdoor exposure. Coatings used outdoors work well indoors too.

Such coatings include:

Coating resistant to industrial atmospheres. This coating can withstand harsh atmospheres with smoke or chemical fumes (such as large cities and heavy industrial areas, etc.).

Corrosion resistant coating in marine atmospheres. This coating can withstand corrosion near the ocean or in salt spray conditions, which are highly salty and humid.

Rural atmospheric corrosion resistant coating. The rural atmosphere is free of industrial smog and the salt spray of an oceanic climate, but it contains a few pollutants.

Dipping Corrosion Resistant Coating

Immersion corrosion is when a metal or its coating is exposed to a liquid and is immersed in whole or in part, or alternately between the two. The anti-corrosion coating must be resistant to corrosion above or below the liquid surface. Such coatings are as follows:

Freshwater resistant coating. The coating is resistant to fresh water and cannot change the chemical composition of the water to make it unfit for consumption.

Coatings resistant to non-potable fresh water. This coating is resistant to non-potable fresh water, the water temperature does not exceed 52oC, and the pH value is 5 to 10.