کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9809510 | 1517711 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Properties of aluminium oxide coating on aluminium alloy produced by micro-arc oxidation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Aluminium oxide coating was directly synthesized on aluminium alloy by micro-arc oxidation (MAO) in NaAlO2 solution. XRD results show that the coating consists of α-Al2O3 and γ-Al2O3 in its whole thickness; the content of α-Al2O3 in the coating is 64±4%. The coating consists of a relatively compact inner layer and a porous outer layer, and its porosity is 7-10%. The density of the coating is 3.47g/cm3, its highest hardness 22 GPa and elastic modulus 279 GPa appear at around 12 μm from interface. The thermal expansion coefficient of the coating is 7.38Ã10â6 Kâ1. The coating can suffer the thermal impact of 873 K; it indicates that the aluminium oxide coating possesses a good thermal shock-resistant and adhesion strength to the substrate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 199, Issues 2â3, 22 September 2005, Pages 184-188
Journal: Surface and Coatings Technology - Volume 199, Issues 2â3, 22 September 2005, Pages 184-188
نویسندگان
Xin Shi-Gang, Song Li-Xin, Zhao Rong-Gen, Hu Xing-Fang,