Ag添加Y系高温超電導酸化物の結晶配向性におよぼす再圧縮ならびに再焼結の影響

概要

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Influences of repressing and resintering on grain orientation of superconductive YBa2Cu3Oy ceramics were investigated.. Especially, infuluence of lubricants addition such as Ag, AgO or Ag<SUB>2</SUB>O on grain orientation and densification were studied by means of X-ray diffraction analysis and SEM observations; (1) First treat of repressing by static oil press and conventional resintering affected the densification, especially, Ag<SUB>2</SUB>O addition was favorable. On the other hand, more than 2 times of treats decreased the densities of specimens. (2) Dynamical working (swaging) affected both the densification and the grain orientation. (3) Critical current density(Jc) of swaged sample was about 25 times larger than that of as sintered sample.
社団法人粉体粉末冶金協会の論文