铝合金表面氧化锆等离子体电解氧化涂层的制备及形成机理研究

无机材料学报, 2009, 24(1): 107-110. doi: 10.3724/SP.J.1077.2009.00107

铝合金表面氧化锆等离子体电解氧化涂层的制备及形成机理研究

Key Laborary of Special Inorganic Coatings, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

关键词：氧化锆 , coating , plasma electrolytic oxidation , aluminium alloy

Prepare and Formation Mechanism of the Zirconia Coating on Aluminium Alloy by Plasma Electrolytic Oxidation

XIN Shi-Gang

Keywords： zirconia , 涂层 , 等离子体电解氧化 , 铝合金

采用等离子体电解氧化方法在铝合金表面制备了氧化锆涂层，电解液为包含Zr(OH)₄颗粒的碱性溶液. 涂层的组成、结构通过XRD、EPMA进行了研究. 结果显示，涂层主要由t-ZrO₂、m-ZrO₂、α-Al₂O₃和γ-Al₂O₃组成，t-ZrO₂为涂层的主晶相，分布在涂层表面，而α-Al₂O₃出现在涂层的内侧.涂层表面呈颗粒状，颗粒尺寸约为1~2μm.在氧化过程中，Zr(OH)₄颗粒在电场力的作用下向等离子体放电通道口沉积，在放电产生的高温作用下直接转化为氧化锆.

Zirconia coating was produced on aluminium alloy by plasma electrolytic oxidation (PEO). The alkaline electrolyte containing Zr(OH)₄ powders was used. The composition and structure of the coating were investigated by XRD, EPMA. The results show that the coating consists of t-ZrO₂, _m-ZrO₂, _α-Al₂O₃ and γ-Al₂O₃. t-ZrO₂ is the main phase and distributes in outer layer of the coating, however, α-Al₂O₃ appears in inner layer of the coating. Many micro-particles appear on the coating surface with dimension of 1－2μm. In the process of plasma electrolytic oxidation, Zr(OH)₄ powders move and deposite on the mouth of plasma discharge channel under the effect of electric field force, then it is transformed to ZrO2 by the high temperature of plasma discharge.

参考文献

[1]

］Koski K, Holsa J, Juliet P. Surf. Coat. Technol., 1999, 120-121: 303-312.
［2］Boulouz M, Boulouz A, Giani A, et al. Thin Solid Films, 1998, 323: 85-92.
［3］Schmidt-Zhang P, Sandow K P, Adolf F, et al. Sensors and Actuators B:Chemical, 2000, 70 (1-3): 25-29.
［4］Pulker H K. Surf. Coat. Technol., 1999, 112(1-3): 250-256.
［5］Matthews A, Young S J, Joseph M, et al. Surf. Coat. Technol., 1997,94-95: 123-130.
［6］Goto T. Surf. Coat. Technol.,2005,198(1-3):367-371.
［7］Hembram K P S S, Dutta G, Waghmare U V, et al. Physica B: Condensed Matter,2007, 399( 1): 21-26.
［8］辛世刚, 宋力昕, 赵荣根, 等(XIN Shi-Gang, et al). 无机材料学报(Journal of Inorganic Materials), 2006, 21(2):493-498. 
［9］Yerokhin A L, Nie X, Leyland A, et al. Surf. Coat. Technol., 1999, 122: 73-93.
［10］Rudnev V S, Morozova V P, Yarivaya T P, et al. Prot. Met., 1999,35(5): 524-530.
［11］许煜汾, 范文元. 中国粉体技术，2000, (6): 251-253.
［12］Ji Z, Haynes J A, Ferber M K, et al. Surf. Coat. Technol., 2001,135 (2-3):109-117.
［13］Kih J S, Marzouk H A, Reucroft P J. Thin Solid Films, 1995, 254: 33-38.
［14］Xin S G, Song L X, Zhao R G, et al. Thin Solid Films, 2006, 515: 326-332.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网