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Anti-Corrosion Coatings – Corrosive Environments

Anti-Corrosion Coatings – Corrosive Environments

Anti-Corrosion Coatings – Corrosive Environments. Protective Coatings Cape Town – Suppliers of an extensive range of Jotun anti-rust paints.

 

Contact us on 087 550 3410 for more information on Anti-Corrosion Coatings or to schedule an appointment.

Different Anti-Corrosion Coatings – Corrosive Environments

According to a number of recent estimates, corrosion is associated with around $276 billion in costs for the economy of the U.S. This cost involves downtime losses, restoration and repair costs, property losses, critical losses and in some cases the loss of human lives.

The positive aspect is that a large portion of these specific losses can be avoided by implementing as well as the correct planning of systematic and proactive prevention of corrosion practices and schedules. The corrosion process typically starts when an electrochemical reaction occurs on a surface exposed to corrosive environments. To date, a more preferable and effective strategy involves isolating the substrates surface from the corrosive (electrochemical) attack by using anti-corrosion coatings. Different coating types are utilized to maintain this protective barrier on surfaces in different environments.

The Description Of Anti-Corrosion Coatings

These coatings are mainly applied for the purpose of protecting solid-metal surfaces and in some cases non-metals. When it comes to choosing a satisfactory protection, it is important to keep in mind the environment’s nature that the metal is exposed to. These can include buildings, plant equipment, bridges, ships, pipelines, vehicles and structures. The environments include industrial, mining, marine, open atmospheres, underground tunnels, under the soil, rural or urban all which are subjected to corrosion. The coatings should be compatible with a substrate-material the conditions this material face as well as its composition.

Service Exposure

When it comes to choosing the right protection system for corrosion, the engineers that specialize in corrosion must take into consideration the impact caused by environmental factors. These can include:

Soil chemistry,this involves the presence of alkalis, acids, reactive salts, moisture and electrical resistance
Airborne contaminants that are corrosive outdoor and indoor
UV exposure, snowfall, storms, fog and temperature range
Splash exposure, condensation and humidity
Exposure to either natural or salt water
Proximity to electrochemical activity like anodic or cathodic protection, grounding stations or high-voltage lines
Exposure to chemicals specifically solvents, sunlight and UV radiation
The expected lifespan related to an operation or project when available
Likely types of exposures to sewage, acid rain, smog, alkaline and acids substances
Site limitations and considerations that apply to the surface preparation, curing, coating and priming process requirements

Materials

Surface coatings and cathodic protection techniques are simultaneously used for the more critical types of protective applications. The typical function of these surface coatings is to provide the service of insulating barriers that prevent the contact that can occur between the electrolytes and the substrate in a working environment, regardless of where the material is positioned. This usually prevents electrochemical reactions associated with corrosion.

Anti-corrosion coatings typically involve a thin coating that consists of specific non-metallic and metal substances that create effective barriers that occur between the substrate that need protection to its environment. In certain cases the metallic coatings will act as what is known as a “sacrificial coating” such is the case with the zinc coatings. The mechanism related to non-metal coating protection are typically classified as galvanic coatings, inhibitor coatings and barrier coatings.

Contact us on 087 550 3410 for more information on Anti-Corrosion Coatings or to schedule an appointment.

Topic: Anti-Corrosion Coatings – Corrosive Environments

 
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