Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1992-02-27
1993-12-21
King, Roy
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505701, 427 62, 4271263, 4274071, 20419222, B05D 512, B32B 900
Patent
active
052721337
ABSTRACT:
An oxide superconductor having a high critical temperature is provided with a passivation coating comprising a first layer of a Group II oxide, such as magnesium oxide, and a second layer of a polymer, such as polyimide. The Group II oxide is formed under conditions to be substantially amorphous. After depositing the Group II, layer, the encapsulated superconductor is heated to an elevated temperature for a period of time in an oxidizing atmosphere. This restores the high critical temperature to its original value. The polymer is then coated on top of the Group II oxide and cured. The passivation coating is resistant to strong acids, strong bases, and water, is robust, hard, and resilient against scratching.
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Josefowicz Jack Y.
Nieh Kai-Wei
Rensch David B.
Denson-Low W. K.
Duraiswamy V. D.
Hughes Aircraft Company
King Roy
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