水中火花放電法により得られたAl粉末を原料にするAlNウィスカーの合成とその形態

概要

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Synthesis of AlN whiskers from Al powders obtained by a spark discharged process and their morphology were studied.AlN whiskers were synthesized by nitredation of the composition in the AlC system in N_2-gas fiow at 1450℃ for 24 hours. Morphological aspects of the whiskers were observed by scanning and a trasmission electron microscopes.Al powders obtained by the spark discharged process were covered with a thin layer of hydroxide and not did not melt nor coalesce up to 1000℃ in air. Morphlogies of the synthesized whisker were divided into there types;two single filament types and one bicrystal type. Both of the sigle filament Whiskers had 1<0001> growth direction.The rowth direction of the latter type deviated about 13 degrees from <0001> aixis.All the whiskers were thin plate-like. The intermal defect of whiskera was also described.
社団法人日本材料学会の論文
1990-10-15