【Q&A】May 16, 2017
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Question: What is local corrosion? Answer: Local corrosion is a type of uneven corrosion, in which the cathodic and anodic areas are distinctly separated from each other. The cathodic area is larger in size while the anodic area is smaller; as a result, corrosion occurs concentrated in specific areas, with high intensity and severe consequences. http://bbs.hcbbs.com/static/image/hrline/4.gif HaiChuan Network’s special May Day event, “Remembering the Glorious Moments,” warmly invites your participation. http://bbs.hcbbs.com/thread-1774529-1-1.html (Source: HaiChuan Chemical Forum) Summary post for HaiChuan Network’s special May Day event, “Remembering the Glorious Moments.” http://bbs.hcbbs.com/thread-1774532-1-1.html (Source: HaiChuan Chemical Forum) First round of voting for the creative ideas contest (use your mouse to influence the results). http://bbs.hcbbs.com/thread-1776507-1-1.html
Also known as uneven corrosion. Corrosion of certain parts of the metal surface. Such as intergranular corrosion, subsurface corrosion, pitting corrosion, film pore-type corrosion, etc. Although the weight loss is less than that of uniform corrosion, it poses a greater risk as it can lead to looseness or leakage in the metal structure.
It is uneven corrosion, the corrosion of certain areas on the metal surface.
Also known as uneven corrosion. Corrosion of certain parts of the metal surface. Such as intergranular corrosion, subsurface corrosion, pitting corrosion, film pore-type corrosion, etc. Although the weight loss is less than that of uniform corrosion, it poses a greater risk as it can lead to looseness or leakage in the metal structure.
Local corrosion is a type of uneven corrosion; its cathodic and anodic regions are distinctly separated, with the cathodic region being larger in area than the anodic region. As a result, corrosion occurs concentrated in specific areas, with high intensity and severe consequences.
Local corrosion is divided into main types such as galvanic corrosion, pitting corrosion, crevice corrosion, intergranular corrosion, wear corrosion, stress corrosion, fatigue corrosion, and selective corrosion.
Local corrosion usually features clearly identifiable and relatively fixed anodic and cathodic regions of macroscopic and microscopic corrosion cells. In a corrosion cell associated with localized corrosion, the anode area is generally relatively small, while the cathode area is relatively large. The electrochemical process of localized corrosion often exhibits autocatalytic characteristics, which further create the conditions for the corrosion reaction to occur, allowing localized corrosion to accelerate continuously.
Also known as uneven corrosion. Corrosion of certain parts of the metal surface
It refers to the situation where corrosion damage in a localized area of a metal surface is much greater than that on the rest of the surface, resulting in defects such as pits, grooves, delamination, perforations, and cracks
When corrosion occurs in a specific area on the metal surface, it is known as local corrosion. Local corrosion progresses very rapidly, and it can often cause the material to corrode and perforate or crack at an early stage, making it highly hazardous.
Wear corrosion, stress corrosion, pitting corrosion