【售阴极保护防腐铝阳极块-冷凝器铝阳极】价格_厂家

售阴极保护防腐铝阳极块-冷凝器铝阳极

不限

￥33

中国焦作

产品属性

图文详情

品牌推荐

品牌/厂家

立博

牌号

a5974

材质

铝镁合金

工艺

铸造铝合金

产地

河南

铝含量

99.99%

杂质含量

0.001%

规格

800*（200+280）*150

阴极保护防腐铝阳极块-冷凝器铝阳极

1) 阳极氧化膜的结构阳极氧化膜由两层组成, 外层称为多孔层，较厚、疏松多孔、电阻低。内层称为阻挡层(亦称活性层)，较薄、致密、电阻高。多孔的外层是在具有介电性质的致密的内层上成长起来的。总体而言，阳极氧化膜是六角柱体的列阵，每一个柱体都要一个充满溶液的星型小孔，形似蜂窝状结构，孔壁的厚度孔隙直径的两倍。

阴极保护防腐铝阳极块-冷凝器铝阳极

(1) 阻挡层阻挡层是由无水的AI2O3所组成, 薄而致密, 具有高的硬度和阻止电流通过的作用。(2) 多孔的外层多孔的外层主要是由非晶型的AI2O3及少量的r-AI2O3.H2O还含有电解液的阴离子。

氧化膜的孔径在100nm~200nm之间，氧化膜厚度10微米左右，孔隙率20%左右，孔距300~500nm之间。氧化膜的表明氧化膜孔基本上是管状结构，氧化膜发生溶膜反应基本上是在孔的底部发生的。而一般的硫酸直流阳极氧化膜的是20nm左右，如果是12微米的氧化膜，那是多深的细管状结构啊！假设这是一个直径1m的井，那么它的井深将有600m深。

阴极保护防腐铝阳极块-冷凝器铝阳极

Most of the excellent properties of the oxide film, such as corrosion resistance, wear resistance, adsorption and insulation, are determined by the thickness and porosity of the porous outer layer. However, these two are closely related to the conditions of anodic oxidation. Therefore, the coatings for different requirements can be obtained by changing the conditions of anodizing. Film thickness is a very important performance indicator for anodized products, and its value directly affects the corrosion resistance, wear resistance, insulation and chemical coloring ability of the film. In the conventional anodizing process, the film thickens with time. After reaching the maximum thickness, it becomes thinner with the elongation. Some alloys, such as AI-Mg and AI-Mg-Zn alloys, are particularly evident. Therefore, the oxidation time is usually controlled within the maximum film thickness time.

阴极保护防腐铝阳极块-冷凝器铝阳极