Preparation of barium cerate-based thin films using a modified Pechini process

被引:71
作者
Agarwal, V
Liu, ML
机构
[1] Sch. of Mat. Science and Engineering, Georgia Institute of Technology, Atlanta
基金
美国国家科学基金会;
关键词
Citric Acid; Metal Cation; Ethylene Diamine Tetraacetic Acid; Ethylene Diamine Tetraacetic Acid; Porous Substrate;
D O I
10.1023/A:1018523415712
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Thin films of BaCe0.8Gd0.2O3 have been successfully prepared on both dense and porous substrates using a modified Pechini process. To increase the extent of chelation, ethylene diamine tetraacetic acid (EDTA) has been used to replace citric acid in the Pechini process. Results indicate that the most important processing parameter is the molar ratio of complexation/polymerization agent (EDTA) to metal ions (C ratio). Films derived from sets with C ratio smaller than 1 are usually cracked, while those derived from sols with C ratio greater than 2.5 are porous. Crack-free and uniform films are obtained from the sols with C ratios between 1.5 and 2.5. Thin-film membranes of barium cerate electrolytes have also been deposited on porous substrates by modifying the surface of the porous substrate with an intermediate polymer film derived from EDTA and ethylene glycol.
引用
收藏
页码:619 / 625
页数:7
相关论文
共 19 条
  • [11] Kotz JC, 1987, CHEM CHEM REACTIVITY
  • [12] THIN-FILM CERAMIC ELECTROLYTES DEPOSITED ON POROUS AND NONPOROUS SUBSTRATES BY SOL-GEL TECHNIQUES
    KUEPER, TW
    VISCO, SJ
    DEJONGHE, LC
    [J]. SOLID STATE IONICS, 1992, 52 (1-3) : 251 - 259
  • [13] KUMAR S, 1992, P MAT RES SOC S SAN, P95
  • [14] PREPARATION OF LA1-ZSRZCO1-YFEYO3-X THIN-FILMS, MEMBRANES, AND COATINGS ON DENSE AND POROUS SUBSTRATES
    LIU, ML
    WANG, DS
    [J]. JOURNAL OF MATERIALS RESEARCH, 1995, 10 (12) : 3210 - 3221
  • [15] CERAMIC FUEL-CELLS
    MINH, NQ
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1993, 76 (03) : 563 - 588
  • [16] Pechini M.P, 1967, US Pat. Off., Patent No. [3330697, 3,330,697]
  • [17] PESCHLE SL, 1992, P MAT RES SOC S SAN, P101
  • [18] RAUCH W, 1996, CERAMICS T, V65, P73
  • [19] PROTON CONDUCTIVE PROPERTIES OF GADOLINIUM-DOPED BARIUM CERATES AT HIGH-TEMPERATURES
    TANIGUCHI, N
    HATOH, K
    NIIKURA, J
    GAMO, T
    IWAHARA, H
    [J]. SOLID STATE IONICS, 1992, 53 : 998 - 1003