Fabrication of large bulk high temperature superconducting articles
AssigneeThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration
InventorsRonald J. Koczor, Robert A. Hiser
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Abstract
A method of fabricating large bulk high temperature superconducting articles which comprises the steps of selecting predetermined sizes of crystalline superconducting materials and mixing these specific sizes of particles into a homogeneous mixture which is then poured into a die. The die is placed in a press and pressurized to predetermined pressure for a predetermined time and is heat treated in the furnace at predetermined temperatures for a predetermined time. The article is left in the furnace to soak at predetermined temperatures for a predetermined period of time and is oxygenated by an oxygen source during the soaking period.
Claims7
A method of fabricating high temperature superconducting articles from crystalline superconducting material, comprising the steps of:
- a) selecting specific particle sizes of superconducting crystals;
- b) mixing said crystals into a homogeneous mixture;
- c) pouring said mixture into a die;
- d) pressurizing said mixture to a predetermined pressure for a predetermined time;
- e) heating said mire in a furnace to sintering temperature for a predetermined time;
- f) oxygenating said mixture at various degrees of temperature while said mixture is still in said furnace.
Dependencies are inferred from the claim text.