Premium
Stability of YBa 2 Cu 3 O 7‐x in Molten Chloride Salts
Author(s) -
Raeder Christopher H.,
Knorr David B.
Publication year - 1990
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.1151-2916.1990.tb07605.x
Subject(s) - decomposition , salt (chemistry) , barium , molten salt , chemistry , chloride , inorganic chemistry , barium chloride , phase (matter) , chemical decomposition , mineralogy , organic chemistry
The decomposition products of YBa 2 Cu 3 O 7‐x depend on the composition of the molten chloride salt for exposure at 1173 K in air. The presence of dichloride salts such as CuCl 2 , CaCl 2 , or MgCl 2 promote formation of CuO, Cu 2 Y 2 O 5 , and loss of barium to the chloride salt as BaCl 2 . Salts based on BaCl 2 or containing LiCl result in YBa 2 Cu 3 O 7‐x decomposition products of Y 2 BaCuO 5 , CuO, and BaCl 2 . High barium activity in the salt supports formation of the Y 2 BaCuO 5 phase and reaction of CO 2 with the salt producing BaCO 3 . Decomposition is most sluggish in binary NaCl‐KCl salts where minimal amounts of reaction or decomposition products are observed.