材料
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
もみ殻によるSi3N4ウィスカーの合成
金子 泰成飴山 惠岩崎 弘通
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1988 年 37 巻 412 号 p. 65-69

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The formation of Si3N4 whiskers from rice hulls was studied. Si3N4 whiskers were synthesized by nitridation of SiO2-C system in N2-gas flows at 1400°C and 1450°C. The shape and microstructure of the whiskers were inspected by means of SEM and TEM. The whiskers of a cylindrical shape grew along the <1011> direction whithout any deffects. The phase of the whiskers was α-type and their diameter and length were 0.1 to 0.5μm and 300 to 1800μm, respectively. The droplet of Fe-Si system was found at the tip of the whiskers. It is suggested that the VLS mechanism controls the growth of whisker.

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