董国君,马福秋,王桂香.硅溶胶封孔对AZ31镁合金阳极氧化膜腐蚀性能的影响[J].稀有金属材料与工程,2016,45(1):66~70.[Dong Guojun,Ma Fuqiu,Wang Guixiang.The effect of SiO2 sol sealing on corrosion resistance of anodic films on AZ31 Mg alloy[J].Rare Metal Materials and Engineering,2016,45(1):66~70.]
硅溶胶封孔对AZ31镁合金阳极氧化膜腐蚀性能的影响
投稿时间:2013-12-26  修订日期:2014-02-25
中文关键词:  AZ31镁合金  封孔  阳极氧化膜  SiO2溶胶  抗腐蚀性能
基金项目:国家青年科学基金(51305090);哈尔滨市青年科技创新人才基金(2013RFQXJ140); 黑龙江省青年基金(QC2012C068); Fundamental Research Funds for the Central University(HEUCF2013091006)
中文摘要:
      本文采用硅溶胶对AZ31镁合金阳极氧化膜进行封孔处理。论文分别讨论了浸渍时间、焙烧温度及浸渍次数三个实验参数。采用扫描电子显微镜(SEM)来分析复合膜的表面形貌,利用动电位极化曲线表征膜的腐蚀性能。采用能谱(EDS)和X射线光电子能谱来表征封孔后膜的表面组成。实验结果表明,硅溶胶封孔可提高阳极氧化膜的腐蚀性能;浸渍时间为1.5min,焙烧温度为350℃时,膜的耐腐蚀性能最佳;浸渍-焙烧次数对膜的性能影响也较大,浸渍焙烧为7次时,膜的耐腐蚀性能较好。封孔后,硅溶胶吸附于阳极氧化膜的孔外与孔内。
The effect of SiO2 sol sealing on corrosion resistance of anodic films on AZ31 Mg alloy
英文关键词:AZ31 Mg alloy  sealing  anodic film  SiO2 sol  corrosion resistance
英文摘要:
      In this paper, silica sol was used to seal the hole of anodic oxide film on AZ31 magnesium alloy. The immersion time, calcinating temperature and immersion times were discussed respectively. Scanning electron microscope (SEM) was employed to characterize the surface morphology of the composite film and potentiodynamic polarization curves were used to analyze the corrosion behaviors. The composition of the anodic films that sealed was studied by energy dispersion spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). It has been found that the corrosion resistance of anodic film was improved with sealing by silica sol. When the dipping time is 1.5 min and the calcination temperature is 350 ℃, the corrosion resistance of the film is the best. Times of dipping and calcination has bigger influential on the performance of the film, when the dipping- calcination was 7 times, the film has good corrosion resistance. After sealing, silica sol was adsorbed on inner hole and outside hole of the anodic oxidation film.
作者单位E-mail
董国君 哈尔滨工程大学 dgj1129@163.com 
马福秋 哈尔滨工程大学  
王桂香 哈尔滨工程大学 wgx0357@126.com 
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