新型高强稀土Al-Zn-Mg-Cu-Sc铝合金的阳极氧化及其抗腐蚀性能研究
Investigation of Anodic Film on a Novel RE-containing Al- Alloy Al-Zn-Mg-Cu-Sc
查看参考文献17篇
|
文摘
|
针对添加稀土Sc的新型高强7000系铝合金中析出相的特征,发展了相应的阳极氧化工艺,并通过封孔后处理进一步提高膜层的致密性。结果表明,在7000系稀土铝合金表面存在的含Sc析出相作为微阴极,加速其周围Al基体的溶解,影响成膜均匀性。通过调整氧化溶液组成及电参数,在铝合金表面获得了均匀的阳极氧化膜。同时对比了氟锆酸盐、铈盐及沸水3种封孔工艺对阳极氧化膜耐蚀性的影响,结果显示沸水封孔后的阳极氧化膜呈银白色,膜层均匀致密,无缺陷和微裂纹存在,耐蚀性最佳,该膜层盐雾测试336 h未发生腐蚀,可以满足实际工业应用的要求。 |
|
其他语种文摘
|
A novel anodic process was developed for a RE-containing 7000 series Al-alloy Al-Zn-Mg- Cu-Sc. Further, sealing-pore post treatments were carried out to improve the compactness of the anodic film. The results indicate that the precipitated Sc-containing phases on the surface of 7000 series Al-alloy act as micocathodes to accelerate the corrosion of Al matrix, which has a negative effect on the uniformity of the anodic film. In order to solve this trouble, the formula and electric parameters of the electrolyte bath were adjusted, hence, a uniform and smooth anodic film is formed on the surface of the Al-alloy. Meantime, three sealing-pore processes with fluozirconate, cerate and boiling water respectively were carried out to improve the compactness of the anodic film. It is found that after boiling water sealing-pore, the anodic film exhibits a sliver like uniform surface without defects and microcracks, among others, that film presents the best corrosion resistance, and the film can keep intact after salt spray test for 336 h, which can satisfy the requirement for the actual applications. |
|
来源
|
中国腐蚀与防护学报
,2020,40(2):131-138 【核心库】
|
|
DOI
|
10.11902/1005.4537.2020.005
|
|
关键词
|
稀土铝合金
;
析出相
;
阳极氧化
;
封孔处理
;
耐蚀性
|
|
地址
|
1.
东北轻合金有限责任公司, 哈尔滨, 150060
2.
中国科学院金属研究所, 沈阳, 110016
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1005-4537 |
|
学科
|
金属学与金属工艺 |
|
基金
|
国家重点研发计划
|
|
文献收藏号
|
CSCD:6702458
|
参考文献 共
17
共1页
|
|
1.
Wang J. Effect of micro-groove on microstructure and performance of MAO ceramic coating fabricated on the surface of aluminum alloy.
J. Alloy. Compd,2019,777:94
|
被引
3
次
|
|
|
|
|
2.
Leng L. Improving the fatigue strength of 7075 alloy through aging.
Mater. Sci. Eng. A,2018,738:24
|
被引
4
次
|
|
|
|
|
3.
Reda Y. Improvements in mechanical and stress corrosion cracking properties in Al-alloy 7075 via retrogression and reaging.
Mater. Sci. Eng. A,2008,485:468
|
被引
36
次
|
|
|
|
|
4.
杨清香. 阳极氧化铝膜的表面接枝改性及润湿行为.
表面技术,2017,46(5):184
|
被引
1
次
|
|
|
|
|
5.
Shih H H. Study of anodic oxidation of aluminum in mixed acid using a pulsed current.
Surf. Coat. Technol,2000,124:278
|
被引
6
次
|
|
|
|
|
6.
Zhang J S. The bonding strength and corrosion resistance of aluminum alloy by anodizing treatment in a phosphoric acid modified boric acid/sulfuric acid bath.
Surf. Coat. Technol,2008,202:3149
|
被引
13
次
|
|
|
|
|
7.
戴一帆. 2024铝合金混合酸阳极氧化.
表面技术,2018,47(1):198
|
被引
6
次
|
|
|
|
|
8.
Deng Y. Effects of Sc and Zr microalloying additions and aging time at 120℃on the corrosion behaviour of an Al-Zn-Mg alloy.
Corros. Sci,2012,65:288
|
被引
35
次
|
|
|
|
|
9.
Rokhlin L L. Investigation of phase equilibria in alloys of the Al-Zn-Mg-Cu-Zr-Sc system.
J. Alloy. Compd,2004,367:10
|
被引
48
次
|
|
|
|
|
10.
Zou X L. Evolution of second phases and mechanical properties of 7075 Al alloy processed by solution heat treatment.
Trans. Nonferrous Met. Soc. China,2017,27:2146
|
被引
16
次
|
|
|
|
|
11.
朱祖芳.
铝材表面处理,2010
|
被引
5
次
|
|
|
|
|
12.
刘德强. 7075厚板铝合金搅拌摩擦焊接头晶间腐蚀行为研究.
中国腐蚀与防护学报,2017,37(3):293
|
被引
4
次
|
|
|
|
|
13.
Zhang R F. Analysing the degree of sensitisation in 5xxx series aluminium alloys using artificial neural networks: A tool for alloy design.
Corros. Sci,2019,150:268
|
被引
4
次
|
|
|
|
|
14.
朱日彰.
金属腐蚀学,1989
|
被引
28
次
|
|
|
|
|
15.
Song Y W. Pitting corrosion of a Rare Earth Mg alloy GW93.
J. Mater. Sci. Technol,2017,33:954
|
被引
15
次
|
|
|
|
|
16.
庄俊杰. 6063铝合金微弧氧化膜层的腐蚀行为研究.
腐蚀科学与防护技术,2017,29:492
|
被引
10
次
|
|
|
|
|
17.
田连朋. LD7铝合金阳极氧化膜的不同封闭方法耐蚀性评价.
中国腐蚀与防护学报,2005,25:327
|
被引
6
次
|
|
|
|
|
了解气象卫星更多信息，请访问