Microstructure and Properties of A IN Coating/Graphite Fabricated via In-situ Reaction  

作　　者：贾铁昆 

机构地区：[1]State Key Lab of Advanced Technology for Material Synthesis and Processing,Wuhan University of Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2007年第4期718-721,共4页武汉理工大学学报（材料科学英文版）

基　　金：the New Century Excellent Youth Fund(NCET-04-0722)

摘　　要：A novel method was used to fabricate AlN coating on graphite substrate. This approach included two steps： firstly, the emulsion composed of BN and anhydrous ethanol was sprayed on the surface of the graphite substrate; secondly, AlN coating was formed through the in-situ reaction of Al with the sprayed BN. The reaction was investigated by thermogravimetric-differential thermal analysis （TG-DTA）, and the phase composition in the synthetic process was characterized by X-ray diffraction （XRD）. Scanning electronic microscopy （SEM） was used to observe the morphology, and electron probe microanalysis （EPMA） was used to observe the distribution of the elements. The experimental results show that the AlN coating is dense and bonded with graphite tightly.A novel method was used to fabricate AlN coating on graphite substrate. This approach included two steps： firstly, the emulsion composed of BN and anhydrous ethanol was sprayed on the surface of the graphite substrate; secondly, AlN coating was formed through the in-situ reaction of Al with the sprayed BN. The reaction was investigated by thermogravimetric-differential thermal analysis （TG-DTA）, and the phase composition in the synthetic process was characterized by X-ray diffraction （XRD）. Scanning electronic microscopy （SEM） was used to observe the morphology, and electron probe microanalysis （EPMA） was used to observe the distribution of the elements. The experimental results show that the AlN coating is dense and bonded with graphite tightly.

关 键 词：in-situ reaction AlN coating NITRIDATION SPRAY interface 

分 类 号：TG115[金属学及工艺—物理冶金]