Thermal evolution of ceramic powders surrounding the YBa2Cu3O7-x composition

被引：2

作者：

Benavidez, Edgardo R. ^{[1
]}

Gonzalez Oliver, Carlos J. R. ^{[2
,3
]}

机构：

[1] Univ Tecnol Nacl, Fac Reg San Nicolas, San Nicolas, Argentina

[2] Ctr Atom Bariloche CNEA, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[3] Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2010年 / 99卷 / 02期

关键词：

Dilatometry; Organometallic powder; Sintering; Superconductors; Thermal analysis; BA-CU-O; X 10(5) PA; SUPERCONDUCTING CERAMICS; LIQUIDUS RELATIONS; OXYGEN-PRESSURE; DECOMPOSITION; OXIDES; SYSTEM; DENSIFICATION; STOICHIOMETRY;

D O I：

10.1007/s10973-009-0004-9

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Organometallic-derived ceramic compositions surrounding YBa2Cu3O7-x (123) were evaluated via DTA-TG runs and dilatometric densification. The compositions were either Y, Ba or Cu deficient respect to 123. For the Yttrium deficient compact the presence of liquids containing 0-1.3 mole % YO1.5-capable of dissolving the 123 grains-can promote a rapid sintering behavior. For Copper deficient compact the main densification/contraction mechanisms were delayed till 985 degrees C. For both Barium and Copper deficient compacts a strong exudation of liquids was detected at 990 degrees C and 1020 degrees C, respectively.

引用

页码：369 / 375

页数：7

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