首页|Electrophoretic deposition of Al2O3/ZrO2 layer with controllable thickness in ethanol medium

Electrophoretic deposition of Al2O3/ZrO2 layer with controllable thickness in ethanol medium

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ZrO2 toughened Al2O3 (Al2O3/ZrO2) ceramic layers with required thickness were prepared by electrophoretic deposition (EPD) method using ethanol suspensions with stabilizing agent of polyethyleneimine (PEI) under constant-voltage mode in this paper. The deposition of Al2O3/ZrO2 ceramic powders occurred on the titanium alloy cathode. A stable suspension with 1wt% PEI in ethanol at pH 5 was prepared in terms of the zeta potential and sedimentation of the suspension.The effects of the suspension concentration, applied voltage, deposition time and processing method of titanium alloy cathode on the coating thickness and morphology were investigated. The deposition layers on titanium alloys with smooth surfaces and thickness of 0.35-1.2mm could be obtained by adjusting the aforementioned parameters. In addition, after being sintered at 1500℃ for 3 h in air atmosphere, ZrO2 toughened A12O3 ceramic layers became smooth and dense.

electrophoretic depositionsuspensionAl2O3ZrO2

Chun-mei YANG、Xian-chun CHEN、Xiao-ming LIAO、Zhong-bing HUANG、Ya-dong YAO、Guang-fu YIN

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College of Materials Science and Engineering, Sichuan University,Chengdu 610064, China

This work was supported by the National Natural Science Foundation of ChinaThis work was supported by the National Natural Science Foundation of ChinaDistinguished Young Scholars of Sichuan Provincesupports from Sichuan Province through a Science Fund for Key Technologies Research and Development Program of Sichuan Provisupports from Sichuan Province through a Science Fund for Key Technologies Research and Development Program of Sichuan Provi

608710625087306608ZQ026-0072008SZ00212006Z08-001- 1

2011

10.1007/sl1458-011-0240-y

中国化学前沿
高等教育出版社

中国化学前沿

ISSN：1673-3495
年,卷(期)：2011.6(2)
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