Formation of TiC and SiC Refractory Compounds by Mechanical Alloying (特集 アモルファス-ナノ・グラニュラ-機能材料 1)
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概要
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Mechanical alloying via high energy ball-mill operated at room temperature has been used for preparing TiC and SiC compounds, starting from elemental Ti, Si and graphite powders. X-ray diffraction, transmission electron microscope, scanning electron microscope and infrared absorption have been used to follow the progress of the mechanical reactions between the reactant materials of Ti-C and Si-C, binary systems. A complete single phase of NaCl-type structure of Ti<SUB>44</SUB>C<SUB>56</SUB>, compound is yielded after 20 ks of milling. The lattice parameter (a<SUB>0</SUB>) of this compound was calculated to be 0.4326 nm. This end-product of Ti<SUB>44</SUB>C<SUB>56</SUB> consists of fine grains of about 5 nm in diameter and possesses homogeneous powders with an average particle diameter of less than 0.5 μm in diameter. In Si-C binary system, a complete stoichiometric β-SiC phase was obtained after 1080 ks of milling. The a<SUB>0</SUB> for final-product of β-SiC powders was calculated to 0.4357 nm. The existence of transverse optical (TO) and longitudinal optical (LO)-like phonon modes for β-SiC compound are observed. The internal structure of the particles are marked by fine cell-like features of about 6 nm.
- 社団法人 粉体粉末冶金協会の論文
- 1996-05-15
著者
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SUMIYAMA Kenji
Institute of Materials Research,Tohoku University
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J. Konno
Institute For Materials Research Tohoku University
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Konno Toyohiko
Institute For Materials Resarch Tohoku University
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EL-ESKANDARANY M.
Institute for Materials Research, Tohoku University
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SUZUKI Kennji
Institute for Materials Research, Tohoku University
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Sumiyama Kenji
Institute For Materials Research Tohoku University
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El‐eskandarany M
Japan Sci. And Technol. Corp. Sendai Jpn
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El-eskandarany M.sherif
Institute For Materials Research Tohoku University:(present Address)mining And Petroleum Engineering
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Konno Toyohiko
Institute for Material Research, Tohoku University, Sendai 980-8577, Japan
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