Al-coated iron particles: Synthesis, characterization and improvement of oxidation resistance

被引：15
作者：
Jay, F. [1 ]
Gauthier-Brunet, V. [1 ]
Pailloux, F. [1 ]
Mimault, J. [1 ]
Bucher, S. [2 ]
Dubois, S. [1 ]
机构：
[1] CNRS, Lab PHYMAT, UMR 6630, F-86962 Chasseneuil, France
[2] LIFCO Ind, F-76750 Buchy, France
来源：
SURFACE & COATINGS TECHNOLOGY | 2008年 / 202卷 / 17期
关键词：
photoelectron spectroscopy; fluidized bed organometallic CVD; oxidation resistance; iron; aluminium; aluminium oxide;
D O I：
10.1016/j.surfcoat.2008.04.001
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A Fluidized Bed Metal Organic Chemical Vapour Deposition (FB-MOCVD) process has been successfully applied to coat Fe particles with Al. N-2 inert gas was used to transport the organometallic Al precursor (liquid triethylaluminium) inside the fluidized bed reactor whose temperature is 350 degrees C. XPS analyses and TEM observations have revealed the presence of a thin alumina layer surrounding the Al coating. Oxidation treatments, performed in the temperature range 350-500 degrees C, demonstrate that this multi-scale coating constitutes an efficient barrier to protect iron particles against oxidation. Such a treatment may be used to perform environmental barrier coatings around magnetic powders. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：4302 / 4306
页数：5
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