本文
No.6（2003）2.Crystallization of glass-ceramics using imitative ash
Minoru TANAKA
Imitative ash was prepared using industrial raw materials and reagents. Glass-Ceramics in CaO-Al2O3-SiO2 glasses were fabricated from imitaive ash to be used in construction materials. In the glasses the prismatic crystals of Wollastonite (CaO・SiO2 ) and Anorthite (CaO・Al2O3・2SiO2 ), were homogeneously precipitated and entangled. Glasses containing of Fe and S were prepared in the system which purposed to examine the initial stage of crystallization of these crystals. After reheating the glass at 800℃ (for Wollastonite precipitation), and at 850℃ (for Anorthite precipitation), nanoparticles of 20-50nm size were confirmed by TEM and these were estimated as FeS hexagonal crystallites using an Electron diffraction pattern. These FeS have the role of forming nuclei found in crystal growth.
Keywords
Glass-ceramics, Crystallization, Wollastonite, Anorthite, FeS
Minoru TANAKA
Imitative ash was prepared using industrial raw materials and reagents. Glass-Ceramics in CaO-Al2O3-SiO2 glasses were fabricated from imitaive ash to be used in construction materials. In the glasses the prismatic crystals of Wollastonite (CaO・SiO2 ) and Anorthite (CaO・Al2O3・2SiO2 ), were homogeneously precipitated and entangled. Glasses containing of Fe and S were prepared in the system which purposed to examine the initial stage of crystallization of these crystals. After reheating the glass at 800℃ (for Wollastonite precipitation), and at 850℃ (for Anorthite precipitation), nanoparticles of 20-50nm size were confirmed by TEM and these were estimated as FeS hexagonal crystallites using an Electron diffraction pattern. These FeS have the role of forming nuclei found in crystal growth.
Keywords
Glass-ceramics, Crystallization, Wollastonite, Anorthite, FeS
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