Stainless steel decorative ball manufacturers tell you what is corrosion?
= 'Font-Size: 16px; Color: rgb (0 0 0); Font- Family: arial, helvetica, sans-Serif; Intergranular corrosion: intergranular boundaries are the boundaries of disordered intergranular disjunctions with different crystallographic orientations. Therefore, they are segregation of various solute elements or metal compounds (Such as carbides and δ phases)A favorable area for precipitation. Therefore, it is not surprising that in some corrosive media, the intergrain boundary may be corroded first. This type of corrosion is called intergranular corrosion. Most metals and alloys may exhibit intergranular corrosion in specific corrosive media. Intergranular corrosion is a kind of selective corrosion damage. It is different from general selective corrosion in that the localization of corrosion is micro-scale, but not necessarily local on the macro level.
stainless steel decorative ball crevice corrosion: refers to the occurrence of spots or ulcer-shaped macro corrosion pits at the crevice of metal components, which is a form of local corrosion, it may be found in a gap where the solution is stagnant or in a shielded surface. Such gaps can be formed at metal-to-metal or metal-to-nonmetal joints, for example, at joints with rivets, bolts, gaskets, valve seats, loose surface deposits, and sea creatures.
Total corrosion: is a term used to describe the corrosion phenomenon that occurs on the entire alloy surface in a way that is more uniform. When comprehensive corrosion occurs, the village material gradually becomes thinner due to corrosion, and even the material corrosion fails. Stainless steel may be fully corroded in strong acid and alkali. The failure caused by comprehensive corrosion is not very worrying, because this kind of corrosion can usually be predicted by simple immersion test or consulting the literature on corrosion.
uniform corrosion: refers to the phenomenon that all metal surfaces contacting corrosive media are corroded. According to different usage conditions, different index requirements are put forward for corrosion resistance, which can be generally divided into two categories: stainless steel refers to steel that is corrosion resistant in atmosphere and weak corrosive medium. The corrosion rate is less than 0. 01mm/year, think it is'Completely corrosion resistant'; The corrosion rate is less than 0. 1mm/year, think it is'Corrosion resistance'Of.
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