摘要:
A method of manufacturing an oxide superconductor including (a) alternately laminating at least one first layer including an oxide superconductor or a precursor thereof with at least one second layer including a metal material to form a laminated body, (b) forming an outermost metal coating layer of the metal material on the laminated body to form a laminated structure, and (c) heating and cooling the laminated structure or elongating the laminated structure into a desired shape and then carrying out heating and cooling.
摘要:
An oxide superconductor having oxide superconductor layers and metal material layers, which are alternately laminated on each other by a desired number of times, and a method of manufacturing the same.
摘要:
Disclosed is a method of manufacturing an oxide superconductor containing at least an alkaline earth metal and copper. This method comprises the steps of heating a material substance containing elements constituting the oxide superconductor, in an atmosphere having an oxygen partial pressure of at most 50 Torr at a temperature ranging from 500.degree. C. to 1000.degree. C., and then heating the material substance in an oxygen-containing atmosphere. Also disclosed herein is a method of manufacturing composite oxide powder which is the precursor of the oxide superconductor. This method comprises the steps of heating the material substance in an atmosphere having an oxygen partial pressure of at most 50 Torr at a temperature ranging from 500.degree. C. to 1000.degree. C., and crushing the material substance into powder.
摘要:
Disclosed herein is a ceramic superconductor comprising a ceramic superconductive member, and a high-conductivity metal layer covering the ceramic superconductive member. At least one portion of the metal layer having low electrical conductivity or low thermal conductivity. Also disclosed is a method of manufacturing a ceramic superconductor, comprising the steps of filling a ceramic superconductor or a precursor thereof in a high-conductivity metal pipe, thereby forming a composite member, rolling the composite member into a ceramic superconductor element of a desired shape, which comprises a ceramic superconductive member and a high-conductivity metal layer covering the ceramic superconductive member, performing a predetermined heat treatment on the ceramic superconductor element, and alloying a predetermined portion of the high-conductivity metal layer, thereby rendering the portion less conductive either electrically or thermally.
摘要:
A method of manufacturing a superconductor includes the steps of filling a ceramic superconductor or a material mixture thereof in a metal container, elongating the metal container, slitting the metal container by a predetermined width to partially expose a material inside the metal container, and sintering the material inside the metal container.
摘要:
The present invention provides a method of manufacturing superconductive products comprising heating a superconductive matter or incorporation including its precursor to a temperature higher than its or its precursor's melting point to melt it or its precursor, and then solidifying and cooling it in a direction in such a way that it is re-crystalized to have an orientation in the longitudinal direction of its incorporation.
摘要:
A method for producing a multilayer printed wiring board by the buildup process. A first layer printed wiring pattern (13) is formed on a metal core (11) over a first insulating laminate (12), and second layer printed wiring pattern (16) is formed on the first layer printed wiring pattern over through studs (15) and a second insulating laminate (14). The surface of the first layer printed wiring pattern (13) is roughened and the through studs (15) are formed by the buildup process using a conductive paste on the roughened surface.
摘要:
Many boards 7 to be processed are disposed within a metal chamber 1 in an isolated state, and many ground electrode plates 9 are disposed near by both surfaces of the boards 7 so as to be at the same potential as the chamber 1. While a microwave generated by a magnetron 3 from an upper portion of the chamber 1 is applied in the chamber 1, both surfaces of the boards 7 are processed at a time with plasma by using glow discharges produced between the boards 7 and plates 9 due to a difference in high-frequency potential between the boards 7 and plates 9 under presence of reaction gas.
摘要:
This invention relates to a method of producing a metal-contained composite material from a metal and a sinterable material such as a ceramic material, and to a metal-contained composite material produced by the method. Conventional composite materials consisting of metal and ceramic material do not have sufficient mechanical and electrical properties, under some conditions in use, and are too expensive to be applied extensively. To solve this problem, the invention provides a manufacturing method comprising a process of fabricating a roll of a laminate consisting of a metal strip and a sinterable material, by winding up the laminate, and a process of subjecting the roll to plastic working; a manufacturing method including a heat treatment process carried out at a predetermined temperature, in addition to the above processes; and metal-contained composite materials produced by these methods. The metal-contained composite materials produced by the methods of the invention can be suitably used for machine parts, electrical sliding contact materials, electrical and thermal conductors, electromagnetic shielding materials, and the like.
摘要:
A method for manufacturing a superconductive multilayer circuit has a first thin film forming step for forming a thin film, which is composed of superconductive material or a similar material thereto, on a substrate, a first circuit layer forming step for forming a superconductive circuit by discharging a specific component from a predetermined part of the thin film or implanting the component in the thin film, a second thin film forming step for forming a thin film, which is composed of a superconducting material or the simulant thereto, on the first circuit layer, and a second circuit layer forming step for forming a superconductive circuit by removing a specific component from a predetermined part of the thin film or implanting the component in the thin film.