skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Sol-gel process for preparing YBa{sub 2}Cu{sub 4}O{sub 8} precursors from Y, Ba, and Cu acidic acetates/ammonia/ascorbic acid systems

Abstract

Sols were prepared by addition of ammonia to acidic acetate solutions of Y{sup 3+}, Ba{sup 2+}, and Cu{sup 2+}. Ascorbic acid was added to a part of the sol. The resultant sols were gelled to a shard, a film, or microspheres by evaporation at 60 C or by extraction of water from drops of emulsion suspended in 2-ethylhexanol-1. Addition of ethanol to the sols facilitated the formation of gel films, fabricated by a dipping technique, on glass or silver substrates. At 100 C, gels that were formed in the presence of ascorbic acid were perfectly amorphous, in contrast to the crystalline acetate gels. Conversion of the amorphous ascorbate gels to final products was easier than for the acetate gels. The quality of coatings prepared from ascorbate gels was superior to that of acetate gel coatings.

Authors:
; ;  [1];  [2]; ;  [3]
  1. Inst. of Nuclear Chemistry and Technology, Warsaw (Poland)
  2. Argonne National Lab., IL (United States). Energy Technology Div.
  3. ENEA, Rome (Italy)
Publication Date:
Research Org.:
Argonne National Lab., IL (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States); Polish State Committee for Scientific Research (Poland)
OSTI Identifier:
195645
Report Number(s):
ANL/ET/CP-85943; CONF-9509289-2
ON: DE96005518; TRN: 96:008317
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: 8. international workshop on glasses and ceramics from gels, Faro (Portugal), 18-22 Sep 1995; Other Information: PBD: Aug 1995
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; YTTRIUM OXIDES; SOL-GEL PROCESS; BARIUM OXIDES; COPPER OXIDES; YTTRIUM COMPOUNDS; BARIUM COMPOUNDS; COPPER COMPOUNDS; ACETATES; PRECURSOR; GELATION; CALCINATION; ADDITIVES; STOICHIOMETRY; FLOWSHEETS

Citation Formats

Deptula, A, Lada, W, Olczak, T, Goretta, K C, Di Bartolomeo, A, and Casadio, S. Sol-gel process for preparing YBa{sub 2}Cu{sub 4}O{sub 8} precursors from Y, Ba, and Cu acidic acetates/ammonia/ascorbic acid systems. United States: N. p., 1995. Web.
Deptula, A, Lada, W, Olczak, T, Goretta, K C, Di Bartolomeo, A, & Casadio, S. Sol-gel process for preparing YBa{sub 2}Cu{sub 4}O{sub 8} precursors from Y, Ba, and Cu acidic acetates/ammonia/ascorbic acid systems. United States.
Deptula, A, Lada, W, Olczak, T, Goretta, K C, Di Bartolomeo, A, and Casadio, S. Tue . "Sol-gel process for preparing YBa{sub 2}Cu{sub 4}O{sub 8} precursors from Y, Ba, and Cu acidic acetates/ammonia/ascorbic acid systems". United States. https://www.osti.gov/servlets/purl/195645.
@article{osti_195645,
title = {Sol-gel process for preparing YBa{sub 2}Cu{sub 4}O{sub 8} precursors from Y, Ba, and Cu acidic acetates/ammonia/ascorbic acid systems},
author = {Deptula, A and Lada, W and Olczak, T and Goretta, K C and Di Bartolomeo, A and Casadio, S},
abstractNote = {Sols were prepared by addition of ammonia to acidic acetate solutions of Y{sup 3+}, Ba{sup 2+}, and Cu{sup 2+}. Ascorbic acid was added to a part of the sol. The resultant sols were gelled to a shard, a film, or microspheres by evaporation at 60 C or by extraction of water from drops of emulsion suspended in 2-ethylhexanol-1. Addition of ethanol to the sols facilitated the formation of gel films, fabricated by a dipping technique, on glass or silver substrates. At 100 C, gels that were formed in the presence of ascorbic acid were perfectly amorphous, in contrast to the crystalline acetate gels. Conversion of the amorphous ascorbate gels to final products was easier than for the acetate gels. The quality of coatings prepared from ascorbate gels was superior to that of acetate gel coatings.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {8}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: