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铸造镁阳极
金属在海水、淡水及土壤介质中的腐蚀可以采用电化学方法—阴极保护技术来予以防止，镁牺牲阳极即属于阴极保护技术。主要原理是将一种电位更负的金属或合金与被保护的金属结构物电性连接，通过电负性金属或合金的不断消耗溶解，向被保护物提供保护电流，使金属结构获得保护。目前，各类铸造镁阳极已广泛用于船舶、港口设施、海洋工程、埋地管线及石化、电力、市政等领域。
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铸造镁阳极的电化学性能
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种类 |
铸造镁阳极 |
开路电位(-V) |
闭路电位(-V) |
实际电容量 (A.h/g)
|
电流效率(%) |
高电位 |
Mg-Mn |
1.70-1.75 |
1.57-1.62 |
≥1.100 |
≥50 |
低电位 |
AZ63 |
1.50-1.55 |
1.45-1.50 |
≥1.105 |
≥50 |
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铸造镁阳极的化学成份
|
化学元素(%) |
高电位 |
低电位 |
Mg-Mn |
AZ63B |
AZ63C |
AZ63D |
Al |
<0.01 |
5.30-6.70 |
5.30-6.70 |
5.0-7.0 |
Zn |
--- |
2.50-3.50 |
2.50-3.50 |
2.0-4.0 |
Mn |
0.50-1.30 |
0.15-0.70 |
0.15-0.70 |
0.15-0.70 |
Si(max) |
0.05 |
0.10 |
0.30 |
0.30 |
Cu(max) |
0.02 |
0.02 |
0.05 |
0.10 |
Ni(max) |
0.001 |
0.002 |
0.003 |
0.003 |
Fe(max) |
0.03 |
0.005 |
0.005 |
0.005 |
其它杂质
(max) |
每项 |
0.05 |
--- |
--- |
--- |
总共 |
0.30 |
0.30 |
0.30 |
0.30 |
Mg |
余 量 |
余 量 |
余 量 |
余 量 |
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铸造镁阳极的尺寸规格（裸阳极）
|
型号 |
形状 |
裸阳极重量 |
宽 |
高 |
长 |
1 S1 |
方形 |
1 lb |
1-3/4" |
1-3/4" |
8" |
3 D3 |
"D" 形 |
3 lbs |
3-1/2" |
3-1/2" |
5-1/4" |
5 D3 |
"D" 形 |
5 lbs |
3-1/2" |
3-1/2" |
9-1/4" |
9 D2 |
"D" 形 |
9 lbs |
2-3/4" |
2-3/4" |
26-1/4" |
9 D3 |
"D" 形 |
9 lbs |
3-1/2" |
3-3/4" |
13-3/4" |
17 D2 |
"D" 形 |
17 lbs |
2-3/4" |
2-3/4" |
50-1/4" |
17 S3 |
"D" 形 |
17 lbs |
3-1/2" |
3-1/2" |
25" |
17 D3 |
"D" 形 |
17 lbs |
3-1/2" |
4" |
25-1/4" |
20 D2 |
"D" 形 |
20 lbs |
2-3/4" |
2-3/4" |
56-3/4" |
24 D4 |
"D" 形 |
24 lbs |
4-3/4" |
4-3/4" |
23-1/2" |
32 D3 |
"D" 形 |
32 lbs |
3-3/4" |
4" |
47" |
32 D5 |
"D" 形 |
32 lbs |
5-1/2" |
5-3/4" |
20" |
40 D3 |
"D" 形 |
40 lbs |
3-3/4" |
4" |
56-1/2" |
48 D5 |
"D" 形 |
48 lbs |
5-1/2" |
5-3/4" |
30-1/4" |
60 D4 |
"D" 形 |
60 lbs |
4-3/4" |
4-3/4" |
57-1/2" |
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铸造镁阳极的尺寸规格（预包装阳极）
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型号 |
裸阳极重量(lb) |
预包装阳极重量(lb) |
裸阳极 |
预包装阳极重量 |
A |
B |
C |
D |
E |
1S1 |
1 |
10 |
1-3/4" |
1-3/4" |
8" |
4" |
12" |
3D3 |
3 |
12 |
3-1/2" |
3-1/2" |
5-1/4" |
6" |
10" |
5D3 |
5 |
17 |
3-1/2" |
3-1/2" |
9-1/4" |
6" |
14" |
9D2 |
9 |
35 |
2-3/4" |
2-3/4" |
26-1/4" |
6" |
32" |
9D3 |
9 |
27 |
3-1/2" |
3-3/4" |
13-3/4" |
6-1/2" |
19" |
17D2 |
17 |
60 |
2-3/4" |
2-3/4" |
50-1/4" |
6-1/2" |
55" |
17S3 |
17 |
45 |
3-1/2" |
3-1/2" |
25" |
6-1/2" |
29" |
17D3 |
17 |
45 |
3-1/2" |
4" |
25-1/4" |
6-1/2" |
29" |
20D2 |
20 |
70 |
2-3/4" |
2-3/4" |
56-3/4" |
6-1/2" |
62" |
24D4 |
24 |
60 |
4-3/4" |
4-3/4" |
23-1/2" |
7" |
30" |
32D3 |
32 |
90 |
3-3/4" |
4" |
47" |
6-1/2" |
53" |
32D5 |
32 |
70 |
5-1/2" |
5-3/4" |
20" |
8-1/2" |
28" |
40D3 |
40 |
70 |
3-3/4" |
4" |
56-1/2" |
6-1/2" |
62" |
48D5 |
48 |
100 |
5-1/2" |
5-3/4" |
30-1/4" |
7-3/4" |
38" |
60D4 |
60 |
126 |
4-3/4" |
4-3/4" |
57-1/2" |
7" |
64" |
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