Method for manufacturing an elongated member from a superconducting ceramic material
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorShumpei Yamazaki
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Abstract
A method for manufacturing an elongated member from a superconducting ceramic material comprising the steps of providing a hollow supporting body of metal or a metallic alloy having a hollow inside section therein, introducing a superconducting ceramic material into the hollow inside section of the hollow supporting body, drying the above liquid, so that the superconducting ceramic material is coated on the inside of the supporting body; and firing the supporting body and the ceramic material in an oxidizing atmosphere.
Claims32
A method for manufacturing a pipe from a superconducting ceramic material comprising the steps of:
- providing a hollow supporting body of metal or a metallic alloy having a hollow inside section therein;
- introducing into the hollow inside section of the hollow supporting body a liquid into which is mixed a superconducting material comprising an oxidized copper ceramic;
- drying the above liquid, so that the superconducting ceramic material is coated on the inside of the supporting body with a hollow space kept therein;
- firing the supporting body and the ceramic material in an oxidizing atmosphere;
- and
- wire drawing said hollow supporting body containing said superconducting ceramic material.
A method for manufacturing a pipe from a superconducting ceramic material comprising the steps of:
- providing a hollow supporting body of metal or a metallic alloy having a hollow inside section therein,
- providing a hollow auxiliary body on the inner side of the supporting body with a hollow space kept therein, the hollow auxiliary body being made of a material which is removed through evaporation during firing in an oxidizing atmosphere,
- introducing a superconducting ceramic material into a space formed between the supporting body and the auxiliary body;
- and
- firing the supporting body, the hollow auxiliary body and the ceramic material in an oxidizing atmosphere.
A method for manufacturing a pipe from a superconducting ceramic material comprising the steps of:
- providing a hollow supporting body of metal or a metallic alloy having a hollow inside section therein;
- introducing powder of an oxide superconducting ceramic material into the hollow inside section;
- firing the ceramic material in an oxidizing atmosphere together with the supporting body;
- and
- wire drawing said hollow supporting body containing said superconducting ceramic material.
A method for manufacturing a pipe from a superconducting ceramic material comprising the steps of:
- providing a hollow supporting body of metal or a metallic alloy having a hollow inside section therein;
- introducing powder of an oxide superconducting ceramic material into the hollow inside section;
- and
- firing the ceramic material in an oxidizing atmosphere together with the supporting body.
Method of producing a normal metal-clad superconductive body, the method comprising:
- a) preparing an intermediate body comprising normal metal cladding material surrounding a quantity of material that comprises superconductive oxide material;
- and
- b) forming the body from the intermediate body by means of one or more shape-changing operations,
- characterized in that the normal metal cladding material and the superconductive oxide material are heat treated in an oxidizing atmosphere where an ambient oxygen-containing atmosphere comes into contact with the superconductive oxide material through a hollow space within the oxide superconductive material.
Dependencies are inferred from the claim text.