木炭の構造変化に及ぼす焼結温度の影響

Abstract

X線回折解析、SEM(走査型電子顕微鏡)およびTEM(透過型電子顕微鏡)観察により焼結木炭の構造検査を行った。焼結木炭の構造は焼結温度により変化し、黒鉛状積層構造と乱層構造が混在する。1,800度C以上で焼結した木炭の層間間隔は黒鉛の層間間隔に近付き3.38?3.44オングストロームであった。焼結木炭断面のSEM観察から、焼結木炭で構成される粒子が圧縮されて層状になり、細胞構造の内腔が塑性伸長あるいは塑性破壊のように変形することが分かった。

Structural inspection of sintered charcoal were performed by X-ray diffraction analysis, SEM (Scanning Electron Microscope) and TEM (Transmission Electron Microscope) observation. The structure of sintered charcoal was exchanged by sintered temperature and had the graphite like layered structure and the turbostratic structure. The interlayer spacing of the charcoal sintered over 1,800 C became close to that of graphite and was 3.38 to 3.44 angstrom. It was found from the observation of cross section of sintered charcoal with SEM that the particles consisting of the sintered charcoal were compressed to be layer and that the lumens of the cell structure deformed like plastic elongation or destruction.