Page 107 - 涂料工业2024年第01期电子刊
P. 107
hydrotalcite can e achie ed y two- tep method and anion replacement method y controllin
reaction condition and ad u tin olution compo ition,and etter coatin uality and
per ormance can e o tained. Electrodepo ition i e icient and rapid, ut the adhe ion o the
prepared coatin need to e impro ed. here are our ilm ormation mechani m or
hydrotalcite ilm ormation,and hydrotalcite tend to nucleate pre erentially near the econd
pha e and at de ect . And the corro ion protection mechani m o hydrotalcite coatin could e
ummari ed a hieldin ,d orption o ion and el -healin .
a
ey words:ma ne ium alloy ayered dou le hydro ide ilm ormin proce corro ion
l
re earch
, ,
1
, 健
, , M 康
探
科
应
2-5 Co n Ca Ni Cu Al Fe 工
·
α ( ) β ( ), Cr Co N Cl 艺
用
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-
-
3 安
, ,
6
全
开
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技
视
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7
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1 M 2 1-x M ( ) (A x n n- ) m
9
x
3
x
2
2
2 - (1) 境
M M 2e
- - (2)
2 2e 2 ,
2
2
M 2 M ( ) (3) , ,
-
2
2
表 常见镁合金及主要第二相 镁合金表面原位生长水滑石膜层的
Ta le Typical magnesium alloy and main second
phases 制备工艺
常见镁合金 常见镁合金种类 主要存在的第二相
M -Al A 31 A 91 β-M Al ,
17 12
M - n M -4 n M n ,
7 3
M -Gd M Gd ,
M - 5
M - M
24 5
M -Nd M Nd
41 5
M -Sn M -9. 8Sn β-M Sn ,
12
2
,
10
原位直接生长水滑石
M ,
6
3
2
3
, M Al ,Al M 2
Al ,
3
,
, (C ), ,
2-
3
, 1. 1. 1 水热法
11
, ,
,
75