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Hot Isostatic Pressing of YBa 2 Cu 3 O 7‐δ and YBa 2 Cu 3 O 7–δ /Ag Composites
Author(s) -
Borofka Janine C.,
Hendrix Bryan C.,
Attarwala Abbas I.,
Tien John K.
Publication year - 1993
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.1151-2916.1993.tb05328.x
Subject(s) - hot isostatic pressing , materials science , ceramic , composite number , composite material , high temperature superconductivity , superconductivity , pressing , sintering , hot pressing , mineralogy , chemistry , condensed matter physics , physics
Hot isostatic pressing (HIP) can be used to produce fully dense shapes of high‐temperature ceramic superconductors. Densification modeling of monolithic YBa 2 Cu 3 O 7‐δ and the composite YBa 2 Cu 3 O 7‐δ /Ag systems allows an understanding of the HIP process and has led to the development of successful protocols for HIP of these materials. Ag metal is the best encapsulation material found for both systems. HIP of monolithic YBa 2 Cu 3 O 7‐δ requires a slow ramp of pressure in order to prevent decomposition into more basic oxides such as Y 2 BaCuO 5 and CuO. HIP of composite YBa 2 Cu 3 O 7‐δ /Ag requires careful powder processing to obtain dense material with a fine dispersion of Ag.