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材料研究学报  2011, Vol. 25 Issue (1): 57-60    
  研究论文 本期目录 | 过刊浏览 |
镁合金微弧氧化--溶胶凝胶复合膜层的耐蚀性
尚伟1,2, 陈白珍1, 石西昌1, 温玉清2
1.中南大学冶金科学与工程学院 长沙 410083
2.桂林理工大学化学与生物工程学院 桂林 541004
Micro–arc Oxidation and Sol–Gel Composite Coatings on Magnesium Alloy
SHANG Wei1,2,   CHEN Baizhen1,   SHI Xichang1,    WEN Yuqing2
1.College of Metallurgical Science and Engineering, Central South University, Changsha 410083
2.College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004
引用本文:

尚伟 陈白珍 石西昌 温玉清. 镁合金微弧氧化--溶胶凝胶复合膜层的耐蚀性[J]. 材料研究学报, 2011, 25(1): 57-60.
, , , . Micro–arc Oxidation and Sol–Gel Composite Coatings on Magnesium Alloy[J]. Chin J Mater Res, 2011, 25(1): 57-60.

全文: PDF(808 KB)  
摘要: 用微弧氧化和溶胶凝胶法在AZ91D镁合金表面制备复合膜层, 用扫描电镜(SEM)、能谱分析(EDS)、X射线衍射(XRD)和电化学测试等分析手段表征其成分、相结构和截面形貌, 研究了复合膜层的耐蚀性。结果表明, 溶胶凝胶膜有效地封闭了镁合金表面微弧氧化膜的微孔, 形成结合力好且较为致密的复合膜层。复合膜层的组成主要有MgO、MgAl2O4、SiO2和ZrO2, 其耐蚀性能有显著提高。
关键词 材料失效与保护  镁合金 微弧氧化 溶胶凝胶 复合膜层  耐蚀性    
Abstract:Protective composite coatings were obtained on a magnesium alloy by micro–arc oxidation (MAO) and sol–gel technique. The cross–section morphologies and composition of the MAO coating and composite coatings were analyzed by scanning electron microscopy (SEM) and energy dispersive X–rays (EDX). The phase structure of the composite coatings was analyzed by X–ray diffractometer (XRD). The corrosion resistance of MAO coating and composite coatings in a 3.5% (mass fraction) NaCl solution was evaluated by potentiodynamic polarisation measures. The results show that SiO2–ZrO2 sol can effectively seal the micropores in the MAO coating, and the composite coatings are more compact and have good adhesion. The composite coatings are composed of MgO, MgAl2O4, SiO2 and ZrO2. The corrosion resistance of the sample with composite coatings is enhanced significantly.
Key wordsmaterials failure and protection    magnesium alloy    micro–arc oxidation    sol–gel    composite coatings    corrosion resistance
收稿日期: 2010-06-28     
ZTFLH: 

TG146

 
基金资助:

国家科技支撑计划项目2006BAB09B04和广西教育厅科研项目200911MS110资助。

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(马颖, 张洪峰, 郝远, 陈体军, 李元东, 高唯, AZ91D镁合金热处理与微弧氧化的交互作用, 材料研究学报,  23(6), 656(2009))

2 JIN Fanya, CHU Paul K., XU Guidong, ZHAO Jun, TANG Deli, TONG Honghui, Structure and mechanical properties of magnesium alloy treated by micro–arc discharge oxidation using direct current and high–frequency bipolar pulsing modes, Materials Science and Engineering: A, 435–436, 123(2006)

3 WANG Xuemin, ZENG Xiaoqin, WU Guosong, YAO Shoushan, LAI Yijian, Effects of tantalum ion implantation on the corrosion behavior of AZ31 magnesium alloys, Journal of Alloys and Compounds, 437(1–2), 87(2007)

4 CHEN Changjun, WANG Maocai, WANG Dongsheng, JIN Ren, LIU Yiming, Microstructure and corrosion behavior of Mg–Nd coatings on AZ31 magnesium alloy produced by high–energy micro–arc alloying process, Journal of Alloys and Compounds, 438(1–2), 321(2007)

5 JIANG Kuisheng, TANG Yuming, ZHAO Xuhui, ZUO Yu, Influences of the current density on surface morphology and adhesion of anodic films of AZ91D magnesium alloy, Chinese Journal of Materials Research, 24(3), 305(2010)

(蒋奎胜, 唐聿明, 赵旭辉, 左禹, 电流密度对AZ91D镁合金阳极氧化膜表面形貌及粘接性能的影响, 材料研究学报,  24(3), 305(2010))

6 YANG Wei, JIANG Bailing, SHI Huiying, XIAN Linyun, Microstructure and corrosion resistance of composite coating on magnesium alloy by micro–arc oxidation and electrophoresis,

Chinese Journal of Materials Research, 23(4), 421(2009)

(杨巍, 蒋百灵, 时惠英, 鲜林云, 镁合金微弧电泳复合膜层的微观结构和抗腐蚀性能, 材料研究学报,  23(4), 421(2009))

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(崔作兴, 邵忠财, 刘志远, 赵立新, 田彦文, 添加剂对镁合金微弧氧化膜性能的影响, 材料研究学报,  23(2), 193(2009))

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11 SHANG Wei, CHEN Baizhen, SHI Xichang, XIAO Xiang, Effect of electrolyte additives on performance of micro–arc oxidation films formed on magnesium alloy AZ91D, Rare Metal Materials and Engineering, 38(2), 335(2009)

(尚伟, 陈白珍, 石西昌, 肖湘, 添加剂对AZ91D镁合金微弧氧化膜的影响, 稀有金属材料与工程,  38(2), 335(2009))

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13 SHANG Wei, CHEN Baizhen, SHI Xichang, CHEN Ya, XIAO Xiang, Electrochemical corrosion behavior of composite MAO/sol–gel coatings on magnesium alloy AZ91D using combined micro–arc oxidation and sol–gel technique, Journal of Alloys and Compounds, 474(1–2), 541(2009)

14 BAI Allen, CHUANG Poyao, HU Chichang, The corrosion behavior of Ni–P deposits with high phosphorous contents in brine media, Materials Chemistry and Physics, 82(1), 93(2003)

15 YAO Zhongping, JIANG Zhaohua, SUN Xuetong, XIN Shigang, WU Zhendong, Influence of the frequency on the structure and corrosion resistance of ceramic coatings on Ti–6Al–4V alloy produced by micro–plasma oxidation, Materials Chemistry and Physics, 92(2–3), 408(2005)

16 LIANG Jun, HU Litian, HAO Jingcheng, Improvement of corrosion properties of microarc oxidation coating on magnesium alloy by optimizing current density parameters, Applied Surface Science, 253(16), 6939(2007)

17 DUAN Hongping, DU Keqin, YAN Chuanwei, WANG Fuhui, Electrochemical corrosion behavior of composite coatings of sealed MAO film on magnesium alloy AZ91D, Electrochimica Acta, 51(14), 2898(2006)

18 SHI Huiying, YANG Wei, JIANG Bailing, Corrosion performance of micro–arc–oxidation and electrophoresis complex coatings on magnesium alloy, Corrosion and Protection, 28(9), 442(2009)

(时惠英, 杨 巍, 蒋百灵, 镁合金微弧氧化--电泳复合膜层的腐蚀性能, 腐蚀与防护,  28(9), 442(2009))
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