SHS of YBa2Cu3O6+x using large copper particles

Sy Chyi Lin, Dong X. Li, R. Semiat, James T. Richardson, Dan Luss*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

YBa2Cu3O6+x was produced by self-propagating high-temperature synthesis (SHS) from copper, barium peroxide, and yttrium oxide. In contrast to previous studies, a stable reaction front coule be maintained even when using relatively large copper particles (smaller than 325 mesh). Large pellets (larger than 22 mm in diameter) were combusted at room temperature. Elevated ambient temperatures (400-500°C) were used to stabilize the combustion front movements in small pellets. A high-quality product may be obtained by a very short sintering at 950-970°C in an oxygen atmosphere following the SHS. The influence of copper-particle size, starting density and post-heat treatment were studied. An explanation of the influence of the copper particle size on the reaction stability is proposed.

Original languageEnglish
Pages (from-to)130-136
Number of pages7
JournalPhysica C: Superconductivity and its Applications
Volume218
Issue number1-2
DOIs
StatePublished - 1 Dec 1993
Externally publishedYes

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