(西安理工大學 材料學院， 西安 710048)
摘 要: 借助于SEM和XRD觀察了鋁合金表面氧化鋁陶瓷層的生長特性，測定了鋁合金表面陶瓷層的相組成。結(jié)果表明：氧化鋁陶瓷層生長明顯分為3個階段，起始階段陶瓷的生長呈典型的柱狀特征，后期以重熔增厚的方式為主，鋁合金陶瓷層與基體間以微冶金過渡形式結(jié)合，陶瓷層表層中非定型相的比例高達70%，其余為α-Al2O3和γ-Al2O3；微弧氧化處理液的組成及電參數(shù)的選擇對陶瓷層的生長有一定的影響。
關(guān)鍵字: 脈沖電場； 陶瓷層； 生長特性； 微冶金結(jié)合
aluminum matrix material surface
（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
