摘要:
A heat and oxidation resistant electrically conductive composite conductor has a core (1) made of copper or a copper alloy, an electrically conductive ceramics layer (2) around the core (1), and a nickel layer (3) on the exterior of the electrically conductive ceramics layer (2). Such a conductor is produced by coating the outer surface of the core copper alloy binder and covering the coated core with a nickel tape under an atmosphere of an inert gas or a reducing gas, welding the seam of the tape, clading the so formed conductor by a cladding die, and drawing the clad conductor. The composite conductor has a high conductivity which is not reduced even when the conductor is exposed to a high temperature operating condition.
摘要:
A metal structure according to the present invention is unlikely to become brittle and has excellent hardness and creep resistance, characterized in that annealing has been applied at a temperature not more than the temperature at which crystals of the metal material start to become larger. This metal structure includes at least two kinds of metal material, and annealing can be applied at a temperature not more than the temperature at which crystals of the metal material start to become larger. For example, the present invention is advantageous in the manner of a microstructure for a contact probe. A fabricating method according to the present invention is a method of fabricating a metal structure unlikely to become brittle and having excellent hardness and creep resistance, characterized in that the step of applying annealing at a temperature not more than the temperature at which crystals of the metal material start to become larger is included.
摘要:
A board for printed wiring comprises an electromagnetic wave absorbing laminate (EM) provided on a surface of a substrate (1) with the intervention of an adhesive layer (2) of a metal oxide, the electromagnetic wave absorbing laminate (EM) comprising: (a) a magnetic layer (3) comprising a plurality of magnetic particles (31) having an average particle diameter of 1 to 150 nm and isolated from each other by an electrically insulative material (32); and (b) an electrically insulative layer (4), being alternately stacked in a multi-layer structure, the board for printed wiring has a reduced thickness and an improved electromagnetic wave absorbing characteristic in a high frequency band of not lower than gigahertz, as compared with a conventional one which has an electromagnetic wave absorbing layer of a composite material including fine magnetic particles simply dispersed in a resin binder.
摘要:
A metal plate for electromagnetic heating is disclosed which includes a substrate comprising aluminum or aluminum alloys, an intermediate layer formed on at least a portion of one surface of the substrate and comprising zinc or zinc alloys and a conductive layer formed on the intermediate layer for serving as a heat generating body when eddy current induced by high-frequency magnetic flux flows therethrough. Methods of manufacturing a metal plate for electromagnetic heating and a metallic mold for electromagnetic heating are also disclosed.
摘要:
Disclosed herein are a heat resistant insulated wire which is not decomposed but maintains insulativity under a high temperature with excellent adhesion of a coating film, and a method of preparing the same. The heat resistant insulated wire includes a base material consisting of an electrical conductor, and an insulating layer provided on its surface. The insulating layer is obtained by heating a second polymer, in which main chains expressed in a chemical formula --[Si(R.sub.1).sub.2 --N(R.sub.2)].sub.n -- are cross-linked with each other by chloroborazine through side chains containing trialkylsilyl radicals at a temperature of at least about 300.degree. C. and not more than 500.degree. C.
摘要:
An insulated wire is suitable for use as a distribution wire, a wire for winding a coil or the like, which is used in a high-vacuum environment or in a high-temperature environment such as a high vacuum apparatus or a high temperature service apparatus. The insulated wire has a base material (1) forming a substrate, a chromium oxide CrO.sub.3-x containing intermediate layer (2) on the substrate, and an oxide insulating layer (3) on the intermediate layer. The base material (1) is an electrical conductor. The chromium oxide containing layer (2) is so formed that the ratio of oxygen to chromium O/Cr is not less than 0.5 but less than 1.5 to avoid the formation of chromic oxide Cr.sub.2 O.sub.3 which reduces the adhesive bonding strength. The oxide insulating layer (3) is formed by applying a precursor solution of a metallic oxide onto the chromium oxide containing layer (2) by a sol-gel method or an organic acid salt pyrolytic method. This insulated wire exhibits a high heat resistance and insulation ability as well as excellent flexibility, and does not provide any gas adsorption source when the wire is used in a vacuum device.
摘要:
Disclosed herein are a heat resistant insulated wire which is not decomposed but maintains insulativity under a high temperature with excellent adhesion of a coating film, and a method of preparing the same. The heat resistant insulated wire includes a base material consisting of an electrical conductor, and an insulating layer provided on its surface. The insulating layer is obtained by heating a second polymer, in which main chains expressed in a chemical formula--[Si(R.sub.1).sub.2 --N(R.sub.2)].sub.n --are cross-linked with each other by chloroborazine through side chains containing trialkylsilyl radicals at a temperature of at least about 300.degree. C. and not more than 500.degree. C.
摘要:
A solution of a ceramics precursor prepared from at last one or two types of metal alkoxides or metal acylates is applied onto a ceramics film having irregularity on its surface, which is formed on a conductor surface, to fill up irregular portions of the surface. This ceramics precursor solution is at least partially changed to a ceramics state by heating. The surface is smoothed by such application of the ceramics precursor solution, and general disadvantages of weakness against rubbing and inferiority in workability can be improved. Further, it is possible to improve an outgassing property.
摘要:
A method of manufacturing a superconducting ceramics elongated body by forming a longitudinally continuous superconducting layer on at least a part of the surface of a flexible ceramics elongated substrate by evaporation under the presence of oxygen ions.
摘要:
A superconducting ceramics elongated body comprising a flexible ceramics elongated substrate and an oxide ceramics superconducting layer formed at least on a part of the surface of the ceramics elongated substrate to longitudinally extend along the ceramics elongated substrate. The superconducting ceramics elongated body further comprises a protective layer of ceramics containing a nitride, which is provided to at least cover the surface of the superconducting layer exposed on the ceramics elongated substrate. A method of manufacturing a superconducting ceramics elongated body by forming a longitudinally continuous superconducting layer on at least a part of the surface of a flexible ceramics elongated substrate. The superconducting layer is formed on the elongated substrate by a sol-gel method, a coating/sintering method, evaporation under oxygen ions, deposition from a fluoride solution or oxidation after application of corresponding fluorides.