Corrosion can occur when substrates are exposed to high temperatures, humidity, water, acids, solvents, salts and other chemicals — or a combination of these environmental factors.
Fortunately, different types of corrosion substrates can offer preventative measures, depending on the cause of degradation.
According to Master Bond, a manufacturer of adhesives and sealants, coating or lining the substrate is one of the most common and easiest ways to prevent corrosion. It forms a physical barrier between the aggressive environment and the substrate, thereby protecting it from getting corroded.
Erosion-corrosion protective coatings
Two component epoxy coatings offer optimum protection against mechanical erosion and electro-chemical attacks. These compounds can be applied to metal surfaces and can operate under continuous immersion.
Such products that feature exceptional wear and friction-resistance, and that guard against flow accelerated corrosion, particle impingement, and cavitation are ideal. They also should exhibit low shrinkage, outstanding electrical insulation, superior compressive strength and fill gaps.
Select grades are engineered to improve efficiency of fluid handling equipment such as valves, pumps, and pipes.
Enhancing corrosion-resistant properties
Proper surface preparation and moisture control are necessary to ensure optimal performance for coating or lining systems. These solvent-free compounds are easy to handle, are available in a range of colors and thicknesses, including paste.
They can be applied by brush, roller, spray, or spatula and cure at room or elevated temperatures. Post-curing with heat enhances cross-linking to improve corrosion-resistant characteristics. Special nanosilica filled systems have impressive abrasion resistant properties thermal stability up to 200-250° C, durability, and toughness.
To learn more about the common types of corrosion and corrosion-resistant coating options, click here.
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