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不同電解液體系中鋯合金微弧氧化陶瓷層組織結(jié)構(gòu)和耐磨性能
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內(nèi)蒙古自治區(qū)自然科學(xué)基金項(xiàng)目(200508010703)


Microstructure and Wear Resistance of Micro-Arc Oxidized Ceramic Coatings on Zr-4 Alloy in Different Electrolyte Systems
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    摘要:

    采用磷酸鹽和硅酸鹽體系的電解液分別對(duì)鋯-4合金進(jìn)行微弧氧化，對(duì)比分析不同體系的電解液中所制備陶瓷層的組織形貌、相結(jié)構(gòu)及耐磨性能。結(jié)果表明：在磷酸鹽體系電解液中形成的陶瓷層，其致密層厚度約占總膜層的2/3，高于硅酸鹽體系的相應(yīng)值；陶瓷層表面呈典型火山狀，比硅酸鹽體系的陶瓷層粗糙，但孔洞數(shù)量少，內(nèi)部組織也比硅酸鹽體系的陶瓷層致密；兩體系電解液中形成的陶瓷層的組成相均主要為t-ZrO2和m-ZrO2，但磷酸鹽體系下陶瓷層中m-ZrO2相的質(zhì)量分?jǐn)?shù)明顯要高，而硅酸鹽體系中陶瓷層的外側(cè)可能形成硅酸鋯。鋯合金經(jīng)微弧氧化處理后，耐磨性能大幅提高，磷酸鹽體系中陶瓷層的耐磨性能在總體上優(yōu)于硅酸鹽體系中的陶瓷層

    Abstract:

    The ceramic coatings on Zr-4 alloy were prepared by micro-arc oxidation in phosphate electrolyte system and silicate electrolyte system respectively. The microstructure, the phase composition and the wear resistance of the ceramic coatings in different electrolyte systems were compared. The results indicate that for the ceramic coating prepared in the phosphate electrolyte, it has thicker dense layers, about 2/3 of the whole layers, than that prepared in the silicate electrolyte; its surface micro-morphology shows typically volcano-shape character, rougher than that prepared in the silicate, but the hole is fewer, and the inner layer is compacter. The ceramic coatings in both electrolyte systems are mainly composed of t-ZrO2 and m-ZrO2, but the mass fraction of m-ZrO2 is higher in phosphate electrolyte and there may be a few zirconium silicate in the outside of the coating in the silicate electrolyte. After the micro-arc oxidation treatment, the wear-resistance of zirconium alloy has a large increase and the wear-resistance of the coating prepared in the phosphate electrolyte is superior to that prepared in the silicate electrolyte

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王 雙,郭 鋒,白海瑞,嚴(yán) 慧,劉佳佳.不同電解液體系中鋯合金微弧氧化陶瓷層組織結(jié)構(gòu)和耐磨性能[J].稀有金屬材料與工程,2010,39(4):739~742.[Wang Shuang, Guo Feng, Bai Hairui, Yan Hui, Liu Jiajia. Microstructure and Wear Resistance of Micro-Arc Oxidized Ceramic Coatings on Zr-4 Alloy in Different Electrolyte Systems[J]. Rare Metal Materials and Engineering,2010,39(4):739~742.]
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  • 收稿日期:2009-04-28
  • 最后修改日期:2010-02-03
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