Optimum processing conditions for the purification of the YBa2Cu3O7-x powder by the sedimentation method
Journal
Materials Letters
Journal Volume
7
Journal Issue
4
Pages
119-121
Date Issued
1988
Author(s)
Abstract
The superconducting YBa2Cu3O7-xpowder was purified by the sedimentation method. In this method the calcined YBa2Cu3O 7-x powder is wet milled and then sedimentation classified. The minor phases are present in the small particles. The calcining and wet milling times were found to be critical for efficient purification. For our system, in which YBa2Cu3O7-x was prepared by calcining a stoichiometric mixture of Y2O3 BaCO3, and CuO at 930°C, a minimum calcination time of 20 h and an optimum wet milling time of 5 h were identified. © 1988.
Type
journal article