Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第11卷    第z2期    总第100期    2001年11月

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文章编号:1004-0609(2001)S2-0186-04
LY12铝合金表面氧化铝陶瓷层的生长过程
蒋百灵,白力静,   蒋永锋

(西安理工大学 材料学院, 西安 710048)

摘 要:   借助于SEM和XRD观察了铝合金表面氧化铝陶瓷层的生长特性,测定了铝合金表面陶瓷层的相组成。结果表明:氧化铝陶瓷层生长明显分为3个阶段,起始阶段陶瓷的生长呈典型的柱状特征,后期以重熔增厚的方式为主,铝合金陶瓷层与基体间以微冶金过渡形式结合,陶瓷层表层中非定型相的比例高达70%,其余为α-Al2O3γ-Al2O3;微弧氧化处理液的组成及电参数的选择对陶瓷层的生长有一定的影响。

 

关键字: 脉冲电场; 陶瓷层; 生长特性; 微冶金结合

Growth of alumina ceramic coatings on
aluminum matrix material surface
JIANG Bai-ling,   BAI Li-jing,    JIANG Yong-feng

Xi′an University of Technology, Xi′an 710048, P.R.China

Abstract:The growth feature in high electric fields and phase composition of alumina ceramic coating on aluminum surface by SEM and XRD were investigated. The results show that at first typical column features and then increasing height with mainly reciprocal molting were found on ceramic coating growth, which was influenced to some extent by the composition of microarc oxidation solution and substrate, and the proportion of amorphousness on ceramic coatings surface reached above 70%, the rest was α-Al2O3 and γ-Al2O3.

 

Key words: pulse electric fields; ceramic coating; growth feature; icro-metallurgic bonding

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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