鋁-鋅-銦系列鋁陽(yáng)較廠家

鋁-鋅-銦系列鋁陽(yáng)較廠家

鋁合金犧牲陽(yáng)較作為陽(yáng)較的鋁被其上析出的氧所氧化,形成無(wú)水的12O3膜；成的氧并不是全部與鋁作用,一部分以氣態(tài)的形式析出出于電阻率格外低，由此它可以起到加強(qiáng)陽(yáng)較尺寸的效果，從而降下來(lái)地床的接地電阻。少部分電流通過(guò)直接接觸從陽(yáng)較傳遞到填料上，就此很大一部分材料消耗應(yīng)發(fā)生在填料柱外面和邊緣。出于在整個(gè)陽(yáng)較地床結(jié)構(gòu)上施加了正電位ie，為此必須保證電纜絕緣層和街頭完好無(wú)損，密封防潮

海水中的暴露金屬表面和涂覆金屬表面都可采用陰較保護(hù)。無(wú)陰較保護(hù)的裸金屬表面只能由逐漸生成的表面膜來(lái)保護(hù)，例如，鋼板樁、儲(chǔ)罐及銅合金管子。金屬、腐蝕因素和表面涂層之間的物理作用，很大程度上取決于他們的化學(xué)、物理及結(jié)構(gòu)的性質(zhì)，也取決于其粘結(jié)性、滲透性、多孔性和厚度。應(yīng)當(dāng)注意，未加工面、船底切變薄或破損點(diǎn)，基體金屬變?yōu)殛?yáng)較，因而特別已受局部腐蝕。尤其在只用高性能涂料時(shí)，將使腐蝕劑的浸蝕作用限制在缺陷的小范圍內(nèi)，而不會(huì)逐漸擴(kuò)大到那些無(wú)言中影響的區(qū)域。

鋁-鋅-銦系列鋁陽(yáng)較廠家陰較保護(hù)對(duì)裸金屬表面相當(dāng)有效，在涂層有小孔或破損的地方也能得到完全保護(hù)。沉淀產(chǎn)物可形成致密的表面覆蓋層，產(chǎn)生表面膜，阻止干船塢中雜散電流，降低推進(jìn)器的腐蝕。與表面涂層相反，陰較保護(hù)給出改變腐蝕反應(yīng)的電化學(xué)保護(hù)。這些特性對(duì)表面涂層的保護(hù)性能是補(bǔ)充，而不是取代。

同土壤和淡水中一樣，在海水中也可利用陽(yáng)較或外加電流來(lái)實(shí)現(xiàn)陰較保護(hù)。

Definition 4: Since the corrosion of the metal protects the original corroded battery and accelerates its own corrosion, it is called the sacrificial anode. The sacrificial anode material should meet the following requirements:(L) There should be sufficient negative potential, and it is very stable.
Definition 5: Sacrifice anode(: sacrificialanode) is made of a metal material with a negative potential. When it is connected to a protected pipeline, it undergoes its own priority dissociation, thereby inhibiting the corrosion of the pipeline. It is called sacrifice anode. The sacrificial anode should have a sufficiently negative stabilizing potential to maintain a sufficiently large drive voltage: at the same time, there is a large theoretical generation of electricity, as well as a high and stable current efficiency.

鋁-鋅-銦系列鋁陽(yáng)較指定廠家

Definition 6: A metal or alloy with a sufficiently negative potential is called a sacrificial anode. Taking into account the risk of explosion of the original oil and gas itself, it is not reliable to avoid stray current in the crude oil storage tank using the external current anti-corrosion method.
Definition 7: The anode is continuously consumed while the cathode(protected structure) is protected, so it is called the sacrificial anode. The three ideal anodes are magnesium, aluminum, and zinc, and their corrosion potential in the natural environment is -10V(relative to Cu | CuSO4, the same below)

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