TY - JOUR
T1 - Control of grain size and morphology of fluor-phlogopite crystals in the solidification of a melt
AU - Kojima, Yasuhiro
AU - Matsuo, Kenji
AU - Nakashima, Kunihiko
AU - Morinaga, Kenji
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1991
Y1 - 1991
N2 - On the basis of a TTT diagram during solidification of a melt in the system SiO2-Al2O3-MgO-MgF2-K2O-B2O3, the effect of the heat treatment conditions on grain size, morphology and crystallization degree of fluor-phlogopite is discussed. By isothermal heat treatment in the range 1253 to 1473 K, fluor-phlogopite as spherical grains was crystallized directly from a supercooled liquid. Below 1253 K, spinodal decomposition-type phase separation occurred as a prelude to crystallization. Energy dispersive X-ray analysis suggested that the growth rate was controlled by diffusion of Mg ions. A linear relationship between the spinodal wave length and the plate diameter was obtained.
AB - On the basis of a TTT diagram during solidification of a melt in the system SiO2-Al2O3-MgO-MgF2-K2O-B2O3, the effect of the heat treatment conditions on grain size, morphology and crystallization degree of fluor-phlogopite is discussed. By isothermal heat treatment in the range 1253 to 1473 K, fluor-phlogopite as spherical grains was crystallized directly from a supercooled liquid. Below 1253 K, spinodal decomposition-type phase separation occurred as a prelude to crystallization. Energy dispersive X-ray analysis suggested that the growth rate was controlled by diffusion of Mg ions. A linear relationship between the spinodal wave length and the plate diameter was obtained.
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U2 - 10.2320/jinstmet1952.55.2_172
DO - 10.2320/jinstmet1952.55.2_172
M3 - Article
AN - SCOPUS:0026106189
SN - 0021-4876
VL - 55
SP - 172
EP - 179
JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
IS - 2
ER -