Connecticut Galvanizing Corp
- 239 Commerce St
- Glastonbury, Connecticut
- 06033-2492
- Phone: 860.659.4330
- Website
Description
What is corrosion? How do you protect iron and steel from corrosion? How do you galvanize? Surface Preparation Galvanizing Inspection What is the resulting metallurgical bond? What is the expected service life of a galvanized coating under outdoor conditions? Paint and Po wder Coating over hot-dip g alvanizing (Duplex Coating) What Are Some Practical Uses of Galvanized Steel? Gallery of application photos What is corrosion? Corrosion is the reaction between a material and its environment that produces a deterioration of the material and alters its mechanical properties. The actual corrosion process that takes place on a piece of bare mild steel is very complex due to factors such as variations in the composition/structure of the steel, presence of impurities due to the higher instance of recycled steel, uneven internal stress, or exposure to a non-uniform environment. It is very easy for microscopic areas of the exposed metal to become relatively anodic or cathodic. A large number of such areas can develop in a small section of the exposed metal. Further, it is highly possible that several different types of galvanic corrosion cells are present in the same small area of the actively corroding piece of steel. As the corrosion process progresses, the electrolyte may change due to materials dissolving in or precipitating from the solution. Additionally, corrosion products might tend to build up on certain areas of the metal. These corrosion products do not occupy the same position in the given galvanic series as the metallic component of their constituent element. As time goes by, there may be a change in the location of relatively cathodic or anodic areas and previously uncorroded areas of the metal are attacked and corrode. This eventually will result in uniform corrosion of the area. The rate at which metals corrode is controlled by factors such as electrical potential and resistance between anodic and cathodic areas, pH of the electrolyte, temperature and humidity.