文章
  • 文章
Search
 About corrosion


According to the study of international measures of prevention, application and economics of corrosion technologies published by NACE INTERNATIONAL IMPACT in 2016, mentioned the economic losses caused by metal corrosion is tremendous, it was 2.5 trillion US dollars globally, which accounts for 3.4% of global GDP(2013).


Corrosion not only causes economic losses, but also often poses a threat to safety. Some localized corrosion, such as pitting or stress corrosion cracking, is often sudden and can easily cause safety accidents. For example, fires and explosions caused by corrosion leakage of oil pipelines, and the damage caused by corrosion of petrochemical equipment, which accounts for 60% of safety accidents, poses a great threat to safety.


The corrosion induced leakage from equipment and pipeline, which cause environmental pollution. Poisonous gas leakage causes a wide range of pollution, such as HS, CO, etc. The polluted soil and ocean will harm the environment for decades or even longer. 


Corrosion also accelerate the consumption of natural resources. Because of corrosion, enormous material resources have been wasted for replacement of equipments and facilities each year. It makes natural resources consume faster, resulting from plenty of resources to supplement.




Corrosion factors


Clˉcorrosion

Cl- has small-diameter ions with strong ability of permeation, it can be easily stick to the metal surface. The more concentration of Cl-, the better electrical conductivity of aqueous solution, the lower resistance of electrolyte, so Cl- can reach the metal surface easily and speed up the localized corrosion


2.jpg    1566197998747846_副本.jpg 

Pitting

Technical Support: 山东万达宜信企业管理顾问有限公司 | Admin Login
返回顶部 seo seo