怎么选择阴较保护材料铝合金牺牲阳较

How to choose cathode protection material aluminum alloy sacrifice anode

阴较保护技术简介阴较保护技术有两种：牺牲阳较阴较保护和强制电流（外加电流）阴较保护。
公司主要产品：镁合金牺牲阳较系列、铝合金牺牲阳较系列、锌合金牺牲阳较系列、压铸用镁合金系列、镁合金半连续铸棒系列以及阴较保护配套产品等十几个品种和上百种规格。我们的产品和技术主要应用于石油化工、海洋平台、城市管网、码头钢桩、船舶、储罐等阴较保护工程

铝合金密度低，但强度比较高，接近或超过优质钢，塑性好，可加工成各种型材，具有优良的导电性、导热性和抗蚀性，工业上广泛使用，使用量仅次于钢。一些铝合金可以采用热处理获得良好的机械性能、物理性能和抗腐蚀性能。硬铝合金属AI—Cu—Mg系，一般含有少量的Mn，可热处理强化．其特点是硬度大，但塑性较差。超硬铝属Al一Cu—Mg—Zn系，可热处理强化，是室温下强度的铝合金，但耐腐蚀性差，高温软化快。锻铝合金主要是Al—Zn—Mg—Si系合金，虽然加入元素种类多，但是含量少，因而具有优良的热塑性，适宜锻造，故又称锻造铝合金。

Surface treatment technology has become an indispensable part in the use of aluminum alloys, and anodic oxidation technology is the most widely used and most successful. 3, cathodic protection technology refers to the parts of the ship that are in direct contact with seawater. Metals or alloys with lower electrode potentials than steel are electrically connected to the steel hull, making it a cathode in all directions; Or to continuously add to the steel hull the same direct current generated by the corrosion current in the same direction as the steel corrosion, the same direct current can be used as a cathode at 360 degrees, in addition to polarization., you can protect the steel hull from corrosion, That is, it is protected. There are protective measures for this type of protection. It is called the cathode protection of the ship. For the cathodic protection of ships, there are two kinds of sacrificial anode protection and applied current protection.

化学成分
种类  化学成份（%）
Zn  In  Cd  Sn  Mg  Si  Ti  杂质，不大于  Al
Si  Fe  Cu
铝-锌-铟-镉  2.5~ 4.5  0.018~ 0.050  0.005~ 0.020  —  —  —  —  0.10  0.15  0.01  余量
铝-锌-铟-锡  2.2~ 5.2  0.020~ 0.045  —  0.018~ 0.035  —  —  —  0.10  0.15  0.01  余量
铝-锌-铟-硅  5.5~ 7.0  0.025~ 0.035  —  —  —  0.10~ 0.15  —  0.10  0.15  0.01  余量
铝-锌-铟-锡-镁  2.5~ 4.0  0.020~ 0.050  —  0.025~ 0.075  0.50~ 1.00  —  —  0.10  0.15  0.01  余量
铝-锌-铟-镁-钛  4.0~ 7.0  0.020~ 0.050  —  —  0.50~ 1.50  —  0.01 ~0.08  0.10  0.15  0.01  余量
电化学性能：
类型  开路电位 (-V)  闭路电位 (-V)  实际电容量 A.h/Kg  电流效率 溶解状况
AA-Ⅰ 1.05-1.18      1.05-1.12      2400min          85min  溶解均匀
AA-Ⅱ 1.05-1.18      1.05-1.12      2600min          92min  溶解均匀
规格:16kg,22kg,23kg,35kg,50kg,85kg,120kg,131kg,180kg

lb17184466