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加壓幅度對AZ91D鎂合金微弧氧化膜的影響
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國家“973”計劃項目（2007CB613700）；甘肅省科技重大專項項目（0702GKDA024）；省際國際科技合作計劃項目（0708WCGA151）和教育部春暉計劃項目（Z2006-1-62002）


Effects of Increase Extent of Voltage on Micro-Arc Oxidation Coatings of AZ91D Magnesium Alloy
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    摘要:

    研究了硅酸鹽體系中加壓幅度對AZ91D鎂合金微弧氧化膜層結(jié)構(gòu)及耐磨、耐蝕性能的影響。結(jié)果表明：隨著加壓幅度的增大，微弧氧化膜層的厚度、孔隙度和結(jié)合力都呈先增大后減小的趨勢，且都在加壓幅度為20 V時出現(xiàn)了最大值；粗糙度隨著加壓幅度的增大而增大。當(dāng)加壓幅度不小于25 V時微弧氧化膜層耐蝕能力強(qiáng)。

    Abstract:

    The effects of increase extent of voltage on microstructures and corrosion resistance of micro-arc oxidation (MAO) coatings for AZ91D magnesium alloy in silicate electrolyte were investigated. The results showed that with increase of the voltage increase extent, all of the thickness, porosity and bonding force of MAO coating first increased, and then decreased. These parameters were all up to their maximum values when the voltage increase extent was 20 V. However, the roughness of the coatings was always increased with the increasing of voltage increase extent. The coating had the optimum corrosion resistance when voltage increase extent was not below 25V.

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呂維玲,馬 穎,陳體軍,徐衛(wèi)軍,楊 健,郝 遠(yuǎn).加壓幅度對AZ91D鎂合金微弧氧化膜的影響[J].稀有金屬材料與工程,2009,38(8):1480~1483.[Lü Weiling, Ma Ying, Chen Tijun, Xu Weijun, Yang Jian, Hao Yuan. Effects of Increase Extent of Voltage on Micro-Arc Oxidation Coatings of AZ91D Magnesium Alloy[J]. Rare Metal Materials and Engineering,2009,38(8):1480~1483.]
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  • 收稿日期:2008-07-21
  • 最后修改日期:2009-06-08
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