Production manner null of yttrium - barium - cupric acid chemical material powder and yttrium - barium - cupric acid chemical material super-conductivity sintering

摘要

PURPOSE:To easily obtain Y-Ba-Cu-O powder having superior sinterability and low reactivity with the atmosphere and capable of giving a dense sintered body having superior superconducting characteristics by sintering by mixing Y2BaCuO5 powder with Ba3Cu5O8 powder. CONSTITUTION:Y2BaCuO5 powder is mixed with Ba3Cu5O8 powder in a prescribed ratio to obtain Y-Ba-Cu oxide powder. This mixed powder is sintered at 820-980 deg.C, preferably 920-950 deg.C in an oxidizing atmosphere under 0.01-0.5 atm partial pressure of oxygen to obtain a superconducting Y-Ba-Cu oxide sintered body.