The protective effect of thermal spraying on the surface of steel structure

       

The application of steel structure has spread to all fields of my country's national economy, but the corrosion phenomenon on the surface of steel structure is very common, which has become a subject that cannot be ignored in the field of materials science and engineering. Relevant departments and experts at home and abroad estimate that if the current scientific knowledge of corrosion and anti-corrosion is popularized, the corrosion loss can be reduced by at least 30%. The application of anti-corrosion science in various fields has far-reaching significance for the development of my country's modernization construction. It can save a lot of energy for the country, protect resources, reduce pollution, and reduce hidden dangers of disasters. It is a way to improve social, economic and environmental benefits.

Due to the different environmental conditions used by steel structures, their corrosion has different influencing factors, so corresponding protection methods are developed. According to the continuous long-term corrosion weight loss of the thermal sprayed zinc coating in the test corrosion environment, the corrosion rate of the zinc coating is calculated, and the corrosion protection life of the zinc coating is predicted accordingly. This study fills the blank of the basic data for the research on the corrosion behavior of thermal sprayed zinc coatings by freshwater corrosion in Changsha area.