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 °C. For both Barium and Copper deficient compacts a strong exudation of liquids was detected at 990 °C and 1020 °C, respectively.

Sintering mechanisms in YBa 2 Cu 3 O 7−x superconducting ceramics

Citations

Thermal evolution of ceramic powders surrounding the YBa2Cu3O7–x composition

References

Sintering and Related Phenomena

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