建筑铝型材表面转化膜的制备及膜层组成分析

廖建

doi:10.15980/j.tzzz.2015.09.022

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建筑铝型材表面转化膜的制备及膜层组成分析
Preparation and Constituent of Conversion Film on Aluminum Profile Surface
2015年35卷第9期页码：973-976
纸质出版日期： 2015 ，
DOI： 10.15980/j.tzzz.2015.09.022

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[1]廖建.建筑铝型材表面转化膜的制备及膜层组成分析[J].特种铸造及有色合金,2015,35(09):973-976.

Liao Jian. Preparation and Constituent of Conversion Film on Aluminum Profile Surface[J]. Special Casting & Nonferrous Alloys, 2015,35(9):973-976.
[1]廖建.建筑铝型材表面转化膜的制备及膜层组成分析[J].特种铸造及有色合金,2015,35(09):973-976. DOI： 10.15980/j.tzzz.2015.09.022.

Liao Jian. Preparation and Constituent of Conversion Film on Aluminum Profile Surface[J]. Special Casting & Nonferrous Alloys, 2015,35(9):973-976. DOI： 10.15980/j.tzzz.2015.09.022.

摘要

以钼酸钠和十二烷基苯磺酸钠混合溶液为成膜试剂

在建筑用6061铝型材表面制备了无Cr复合转化膜

对复合转化膜层的成膜过程和组织结构进行了观察

并探讨了转化膜的形成机理。结果表明

随着成膜时间的延长

转化膜表面的显微小孔逐渐被均匀分布的微裂纹所覆盖

微裂纹宽度逐渐增加;复合转化膜层由非晶态氧化物和氢氧化物组成

主要为MoO3、MoO（OH）2、CeO2、Ce（OH）4、Ce（OH）3、MnO2、Al（OH）3、Al2O3以及可能存在的MoO2。

Abstract

With sodium molybdate and sodium twelve mixed solution as the membrane forming agent

composite film with Cr-free on the 6061 aluminum surface was prepared

and the forming process and microstructure of the composite conversion film were investigated

meanwhile

the formation mechanism of the conversion film was described.The results show that

with increasing in the film formation time

micro-hole in the conversion film surface is covered gradually with uniformly distributed micro-crack

and the width of micro-crack is increased increasingly.Composite conversion coating consists of amorphous oxides and hydroxides

such as MoO3

MoO（OH）2

CeO2

Ce（OH）4

Ce（OH）3

MnO2

Al（OH）3

Al2O3 and possible MoO2.

关键词

6061铝型材转化膜表面形貌机理

Keywords

6061Aluminum ProfileConversion CoatingSurface MorphologyMechanism

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