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微弧氧化α-Al2O3陶瓷膜生長過程分析
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TG174.453

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國家自然科學(xué)基金項目(50171026)和哈爾濱工業(yè)大學(xué)跨學(xué)科交叉性研究基金項目(HITMD2001、23)


The Analysis of Growth Characteristic of Alumina Coatings by Micro-Plasma Oxidation
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    摘要:

    在交流條件下利用微等離子體氧化技術(shù)合成了氧化鋁陶瓷涂層。XRD分析結(jié)果顯示,涂層α-Al2O3相與y-Al2O3相的含量隨反應(yīng)時間而變化。氧化2.5h后可以得到由單一的α-Al2O3相組成的涂層。陶瓷涂層厚度的生長速率大約為0,7μm/min;在135min之后,涂層的厚度基本小變。氧化最初的15min之內(nèi),涂層的表而密度僅為0.088mg/cm^2,然后表面密度增大。在氧化15min~60min之內(nèi),表而密度(y)與氧化時間呈直線關(guān)系。在氧化60min之后,y的增長速率逐漸減小。

    Abstract:

    In this paper, alumina ceramic coating of aluminum alloy surface was performed using micro-plasma oxidation (MPO) technology. Coating formed after short treatment time was found to consist of -Al2O3 and -Al2O3. Single -Al2O3 coatings can be gained by oxidation for 2.5 h. The growth velocity of coating thickness was 0.7 m/min during first 135 min, then that was constant. The surface density of coating was only 0.088 mg/cm2 at 15th min, then that increases gradually. The surface density increase presented a linear relationship during 15 min~60 min, and after 60 min the increase of surface density of coating is slow.

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辛世剛 姜兆華 吳曉宏 孫學(xué)通 趙連城.微弧氧化α-Al2O3陶瓷膜生長過程分析[J].稀有金屬材料與工程,2004,33(6):651~654.[Xin Shigang, Jiang Zhaohua, Wu Xiaohong, Sun Xuetong, Zhao Liancheng. The Analysis of Growth Characteristic of Alumina Coatings by Micro-Plasma Oxidation[J]. Rare Metal Materials and Engineering,2004,33(6):651~654.]
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  • 最后修改日期:2000-11-15
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