引用本文:张苏雅， 蒋百灵， 房爱存.草酸钛钾在铝合金微弧氧化过程中的着色机制[J].中国表面工程,2015,28(1):90~95
ZHANG Suya, JIANG Bailing, FANG Aicun.Coloring Mechanism of K2TiO(C2O4)2 in Micro-arc Oxidation Process on Aluminum Alloy[J].China Surface Engineering,2015,28(1):90~95
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草酸钛钾在铝合金微弧氧化过程中的着色机制
张苏雅， 蒋百灵， 房爱存1,2
1. 南京工业大学 材料科学与工程学院， 南京 210000;2. 南京浩穰环保科技有限公司， 南京 210000
摘要:
在六偏磷酸钠电解液体系中添加草酸钛钾，利用微弧氧化技术，在铝合金表面制备有色陶瓷层。利用扫描电子显微镜（SEM）、X射线能谱仪（EDS）及光电子能谱仪（XPS）等，对不同草酸钛钾添加量制备的铝合金微弧氧化陶瓷层截面元素分布及物相组成进行测试并分析，进而探讨草酸钛钾在铝合金微弧氧化过程中的着色机制。结果表明：脉数500，脉宽80 μs，电流密度5 A/dm2，微弧氧化15 min，草酸钛钾浓度6 g/L时，陶瓷层外观质量较好，呈现蓝色；蓝色陶瓷层主要元素Al、O、Ti均匀分布于陶瓷层中，陶瓷层呈现蓝色主要是由Al2O3和TiO2共同作用的结果。
关键词:  微弧氧化  铝合金  着色机制
DOI：10.11933/j.issn.1007-9289.2015.01.014
分类号:
基金项目:
Coloring Mechanism of K2TiO(C2O4)2 in Micro-arc Oxidation Process on Aluminum Alloy
ZHANG Suya, JIANG Bailing, FANG Aicun1,2
1. College of Material Science and Engineering, Nanjing University of Technology, Nanjing 210000;2. Nanjing HaoRang Environment Science&Technology Co., Ltd., Nanjing 210000
Abstract:
Colour ceramic coating can be prepared on the aluminum alloy surface by microarc oxidation(MAO) in the (NaPO3)6 electrolyte system with K2TiO(C2O4)2 addition. The sectional element distribution and phase composition of the MAO ceramic coating with different K2TiO(C2O4)2 addition on the aluminum alloy were analyzed by SEM, EDS, XPS and other methods. The coloring mechanism of K2TiO(C2O4)2 during the MAO process were discussed. The results show that: the ceramic coating has better surface quality with 6 g/L K2TiO(C2O4)2 addition under the established parameters when the number of pulses is 500, pulse width is 80 μs, current density is 5 A/dm2 , and MAO is for 15 min. The main elements Al, O, Ti uniformly distribute in the blue ceramic layer. Blue in the ceramic coating is mainly caused by the combined effects of Al2O3 and TiO2.
Key words:  microarc oxidation(MAO)  aluminum alloy  coloring mechanism
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