TY - JOUR
T1 - Preparation of Fine Monoclinic Hafnia Powders by Hydrothermal Oxidation
AU - Toraya, Hideo
AU - Yoshimura, Masahiro
AU - Somiya, Shigeyuki
PY - 1982/5
Y1 - 1982/5
N2 - Fine single‐phase monoclinic HfO2 powders were prepared from Hf metal chips and high‐temperature high‐pressure water by hydrothermal oxidation in closed and open systems. In the closed system, Hf metal was converted to HfO2 by treatment at ≥600°C under 100 MPa for 3 h. At 500°C half the Hf reacted to produce Hf hydride and a small amount of HfO2. In the open system, Hf metal scarcely reacted at 500°C, but at 600°C the reaction was more rapid than the corresponding run in the closed system.
AB - Fine single‐phase monoclinic HfO2 powders were prepared from Hf metal chips and high‐temperature high‐pressure water by hydrothermal oxidation in closed and open systems. In the closed system, Hf metal was converted to HfO2 by treatment at ≥600°C under 100 MPa for 3 h. At 500°C half the Hf reacted to produce Hf hydride and a small amount of HfO2. In the open system, Hf metal scarcely reacted at 500°C, but at 600°C the reaction was more rapid than the corresponding run in the closed system.
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U2 - 10.1111/j.1151-2916.1982.tb10438.x
DO - 10.1111/j.1151-2916.1982.tb10438.x
M3 - Article
AN - SCOPUS:84943409653
SN - 0002-7820
VL - 65
SP - c72-c72
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 5
ER -