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A Coated Infiltration Growth Technique for Fabricating Single‐Grain Y–Ba–Cu–O Bulk Superconductor
Author(s) -
Li GuoZheng,
Dong Lei,
Deng JianHua,
Deng XiangYun,
Yang WanMin
Publication year - 2014
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/jace.13326
Subject(s) - microstructure , materials science , homogeneous , superconductivity , infiltration (hvac) , coating , grain growth , analytical chemistry (journal) , composite material , mineralogy , chemistry , condensed matter physics , chromatography , physics , thermodynamics
A coated infiltration growth technique was proposed to fabricate single‐grain Y?Ba?Cu?O bulk superconductor, in which a liquid source coated Y 2 BaCuO 5 (Y‐211) preform was employed and the liquid source composition was 3 BaO + 5 CuO . Experimental results indicated that, the sample exhibited a single‐grain morphology on the top surface, and the liquid source coating always existed surrounding the bulk which contributed to the complete growth of the sample. The homogeneous distribution of fine Y‐211 inclusions in microstructure and a satisfactory J c performance of 5.67 × 10 4 A/cm 2 in self‐field at 77 K have also been observed.