生长速率对镁合金微弧氧化膜结构及耐蚀性的影响（英文）
发布时间：2018-08-11 11:13
【摘要】：硅酸盐电解液体系中对AZ91D镁合金进行微弧氧化处理,膜层厚度相同但生长速率不同是本研究的实验设计特色。通过调节电源电压,使得膜层的生长速率分别为1,5,15和25μm/min,从而制备出生长速率不同但厚度相同的微弧氧化膜层,对膜层的微观结构及耐蚀性进行定性及定量研究,从实验室研究及实际应用角度对不同生长速率的各膜层进行综合对比分析。结果表明,生长速率对膜层的表面孔隙率、微孔的尺寸及数量,膜层的质量及质量厚度比,以及膜层耐蚀性均有较大的影响,但对膜层中的成分及元素分布基本无影响;在工业应用中,膜层生长速率的选择,应将膜层的生产效率和膜层性能统筹考量,本研究中生长速率为15μm/min的膜层显示出这样的优势。
[Abstract]:The microarc oxidation treatment of AZ91D magnesium alloy in silicate electrolyte system is characterized by the same film thickness and different growth rate. By adjusting the power supply voltage, the growth rate of the film is 1 ~ 5 渭 m / min and 25 渭 m / min, respectively. The micro-arc oxide film with different growth rate and the same thickness is prepared. The microstructure and corrosion resistance of the film are studied qualitatively and quantitatively. From the point of view of laboratory research and practical application, the film layers with different growth rates were comprehensively compared and analyzed. The results show that the growth rate has great influence on the surface porosity, the size and quantity of micropores, the mass and thickness ratio of the film and the corrosion resistance of the film, but has no effect on the composition and the distribution of elements in the film. In the industrial application, the production efficiency and the performance of the film should be considered as a whole when the growth rate of the film is chosen. The film with the growth rate of 15 渭 m/min in this study shows this advantage.
【作者单位】： 兰州理工大学有色金属先进加工与再利用省部共建国家重点实验室;
【基金】：The Creative Research Group Fund Grant of Gansu Province(1111RJDA011)
【分类号】：TG178
，
本文编号：2176836
[Abstract]:The microarc oxidation treatment of AZ91D magnesium alloy in silicate electrolyte system is characterized by the same film thickness and different growth rate. By adjusting the power supply voltage, the growth rate of the film is 1 ~ 5 渭 m / min and 25 渭 m / min, respectively. The micro-arc oxide film with different growth rate and the same thickness is prepared. The microstructure and corrosion resistance of the film are studied qualitatively and quantitatively. From the point of view of laboratory research and practical application, the film layers with different growth rates were comprehensively compared and analyzed. The results show that the growth rate has great influence on the surface porosity, the size and quantity of micropores, the mass and thickness ratio of the film and the corrosion resistance of the film, but has no effect on the composition and the distribution of elements in the film. In the industrial application, the production efficiency and the performance of the film should be considered as a whole when the growth rate of the film is chosen. The film with the growth rate of 15 渭 m/min in this study shows this advantage.
【作者单位】： 兰州理工大学有色金属先进加工与再利用省部共建国家重点实验室;
【基金】：The Creative Research Group Fund Grant of Gansu Province(1111RJDA011)
【分类号】：TG178
，
本文编号：2176836
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