Abstract: In manufacturing a magnesium alloy, continuous casting is performed using a movable mold. A magnesium alloy to be processed by presswork, forging, and the like can be efficiently provided.

Abstract: A spark plug (100) includes: a center electrode (2); and a ground electrode (30) which is to be exposed in a combustion chamber of an internal combustion engine and which forms a spark discharge gap with the center electrode (2), wherein at least one of the center electrode (20) and the ground electrode (30) contains an electrode material whose principal component is Ni and in which an intermetallic compound is precipitated at least intergranularly and intragranularly.

Abstract: The invention is to provide a magnesium alloy material such as a magnesium alloy cast material or a magnesium alloy rolled material, excellent in mechanical characteristics and surface precision, a producing method capable of stably producing such material, a magnesium alloy formed article utilizing the rolled material, and a producing method therefor. The invention provides a producing method for a magnesium alloy material, including a melting step of melting a magnesium alloy in a melting furnace to obtain a molten metal, a transfer step of transferring the molten metal from the melting furnace to a molten metal reservoir, and a casting step of supplying a movable mold with the molten metal from the molten metal reservoir, through a pouring gate, and solidifying the molten metal to continuously produce a cast material. In a process from the melting step to the casting step, parts contacted by the molten metal are formed by a low-oxygen material having an oxygen content of 20 mass % or less.

Abstract: A method of producing a long magnesium material excellent in the plastic workability and a long magnesium material obtained according to the producing method are provided. Pure magnesium or a magnesium alloy is cast to prepare a cast material and, to the cast material, the plastic working is applied to prepare a long processed material. The plastic working includes a hot process that accompanies a cross sectional area reduction and is applied at a temperature of 250° C. or more. When the hot process is applied, during the process, in the vicinity of a surface of a workpiece, an oxide is generated and present there. The oxide, when the plastic working (secondary working) such as drawing and forging is applied to the formed material, may be a starting point of the crack or disconnection.

Abstract: A coaxial cable including a core conductor, an insulator arranged around the outer periphery of the core conductor, and an outer conductor arranged around the outer periphery of the insulator coaxially relative to the core conductor, where the electrical conductivity is 20% IACS or more and the Young's modulus of the core conductor is 245 GPa or more. In the present invention, the core conductor is preferably made of a material of one or more kinds selected from the group including tungsten, tungsten alloy, molybdenum, and molybdenum alloy.

Abstract: The invention offers (a) a method of producing a magnesium-alloy material, the method being capable of obtaining a magnesium-alloy material having high strength, (b) a magnesium-alloy material having excellent strength, and (c) a magnesium-alloy wire having high strength. A molten magnesium alloy is supplied to a continuous casting apparatus provided with a movable casting mold to produce a cast material. The cast material is supplied to between at least one pair of rolls to perform an area-reducing operation (a rolling operation). The rolling operation is performed such that pressure is applied to the cast material using the rolls from at least three directions in the cross section of the cast material. A magnesium-alloy material obtained through the above-described production method has a fine crystal structure and is excellent in plastic processibility.

Abstract: A coaxial cable comprising a core conductor, an insulator arranged around the outer periphery of the core conductor, and an outer conductor arranged around the outer periphery of the insulator coaxially relative to the core conductor, wherein the electrical conductivity is 20% IACS or more and the Young's modulus of the core conductor is 245 GPa or more. In the present invention, the Young's modulus of the core conductor is specified in particular since it is effective to have high Young's modulus in order to improve torsion resistance in addition to superior durability against tensile stress and repeated bending. In order to satisfy such Young's modulus, preferably the core conductor is made of a material of one or more kinds selected from the group consisting of tungsten, tungsten alloy, molybdenum, and molybdenum alloy.

Abstract: In manufacturing a magnesium alloy, continuous casting is performed using a movable mold. A magnesium alloy to be processed by presswork, forging, and the like can be efficiently provided.

Abstract: In manufacturing a magnesium alloy, continuous casting is performed using a movable mold. A magnesium alloy to be processed by presswork, forging, and the like can be efficiently provided.

Abstract: In manufacturing a magnesium alloy, continuous casting is performed using a movable mold. A magnesium alloy to be processed by presswork, forging, and the like can be efficiently provided.

Abstract: In manufacturing a magnesium alloy, continuous casting is performed using a movable mold.

Abstract: 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.

Abstract: 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.