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Dissolution and Reaction of Yttria‐Stabilized Zirconia Single Crystals in Hydrothermal Solutions
Author(s) -
YOSHIMURA MASAHIRO,
HIUGA TAKEHIRO,
SOMIYA SHIGEYUKI
Publication year - 1986
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1986.tb04798.x
Subject(s) - yttria stabilized zirconia , dissolution , cubic zirconia , hydrothermal circulation , solid solution , inorganic chemistry , materials science , chemistry , mineralogy , nuclear chemistry , chemical engineering , metallurgy , ceramic , engineering
Dissolution and reaction of yttria‐stabilized zirconia (YSZ) single crystals were investigated in various solutions at 600° to 780°C under 100 MPa. YSZ crystals were not corroded in pure H 2 O and neutral solutions such a LiF, LiCl, NaNO 3 , KCl, KBr; K 2 SO 4 , and Na 2 SO 4 even under severe conditions at 600°C, 100 MPa. They were, however, dissolved and reprecipitated in basic solutions such as NaF, K 2 CO 3 , KOH, NaOH, and LiOH with partial decompositon (destabilization in the last three solutions. YSZ crystals were completely decomposed into m ‐ZrO 2 in acidic solutions of Li 2 SO 4 , H 2 SO 4 , and HCl, whereas they reacted with the solution and formed other compounds in KF, NH 4 F, and H 3 PO 4 solutions.