摘要:
Ni-Cr type allow materials comprising 10 to 50 atom % of Cr, 5 to 25 atom % of Al and/or Si, and the balance to make up 100 atom % of substantially pure Ni, excelling in cold workability, and exhibiting high electric resistance.These alloy materials possess very high electric resistance and small electrical resistance temperature coefficients over a wide temperature range from room temperature to elevated temperatures, and have excellent cold workability, mechanical properties, durability, ability to resist oxidation, corrosion, and fatigue as well as strain gauge sensitivity. The alloys are very useful as industrial materials of varying types including electrical resistors, precision resistors, and electrically heating wires used at elevated temperatures and bracing materials, reinforcing materials, and corrosionproofed materials used at elevated temperatures.
摘要:
The present invention provides a filter element made wholly of fluorocarbons resin, comprising as essential elements a filter material produced by folding a sandwich-form sheet comprising a filter membrane made of a fluorocarbon resin and net supporters made of a thermoplastic fluorocarbon resin superimposed on the both surfaces thereof into a pleat form and liquid-tightly welding the edge parts of the both sides of the pleated sheet, sealed end parts produced by embedding the both end parts of said filter material except the central openings into a thermoplastic fluorocarbon resin to force the resin into the pleats, whereby the both end parts are each integrally and tightly welded, and fluorocarbon resin caps welded liquid-tightly with said sealed end parts, and production thereof.
摘要:
The manufacture is carried out by impregnating bundles of filaments of fibrous-reinforcing material in a bath made up of an emulsion of a thermoplastic resin and a blowing agent. The emulsion-impregnated reinforcing filament bundles are then squeezed and dried to form resin coatings, and then collected to provide a single bunch of the fiber-reinforced thermoplastic resin material. This bunch is subsequently heated and allowed to expand in a tunnel and also cooled in a tunnel to produce a fiber-reinforced thermoplastic resin of a cellular structure. During the impregnation with the emulsion in a bath, the bundles are slackened and repeatedly beaten in the condition of free tension to cause the filament bundles to be substantially frayed to facilitate the impregnation. An apparatus utilizable in the practice of the above method is also disclosed.
摘要:
A method of coloring a surface of a zirconium-based metallic glass component that includes the step of imparting interference colors by carrying out an anodizing process using an alkaline solution to form a film having a thickness of 300 nm or less on the surface of the zirconium-based metallic glass component.
摘要:
An arc melting furnace apparatus is provided which reduces an operation burden on a worker and shortens working hours. An arc melting furnace apparatus 1 includes a housing 2 having formed therein a melting chamber 2a, a hearth 4 provided within the melting chamber 2a and having a recessed portion 4a, and a heating mechanism 10 for heating and melting a metal material supplied into the recessed portion 4 to generate an alloy ingot. The apparatus comprises a turning member 23 rotatably supported on a supporting member 21 standing within the melting chamber 2a, a perimeter edge of the turning member 23 rotating and moving along the inner surface of the recessed portion 4a to lift the alloy ingot generated in the recessed portion 4a above the hearth 4 and turn it over, and a resilient turn-over assisting member 24 provided above an upper end of the recessed portion 4a. Further, the turn-over assisting member 24 is arranged to flex by a predetermined amount when the alloy ingot abuts it, and to return to its original state from the flexed state so that the alloy ingot is urged to drop into the recessed portion 4a.
摘要:
A method for forming a metallic glass, which comprises a step of subjecting a metallic glass to a rough forming by die casting, to prepare a roughly formed article, and a step of heating the roughly formed article to a temperature region corresponding to an undercooled liquid thereof, followed by subjecting the heated article to warm press forming.
摘要:
An objective of the present invention is to form a hyper-elastic flange integrally within a shield case body around a periphery thereof while decreasing an occupied area for grounding. The shield case 2 according to the present invention is disposed to cover electronic parts 6 on a circuit board 1, and which has a flange 7 formed integrally therewith so as to contact with a metallic ground line 3 on the circuit board 1. The flange 7 is elastically deformed to be grounded, thus a leakage of electromagnetic waves to the outside of the shield case 2 is prevented. The flange 7 is made of metallic glass. By forming the flange 7 from metallic glass, a displacement due to viscous flowing on the atomic level, which is different from a plastic deformation, can be utilized, and thus a high precision flange can be formed without a spring-back.
摘要:
Provided is a hydrogen separation membrane characterized by comprising a structure obtained by sintering atomized powder having a composition of NixMyZr100-x-y (wherein M is Nb and/or Ta, 25≦x≦40, 25≦y≦40) and an average grain size of 50 μm or less. The prepared hydrogen separation membrane does not require the use of costly Pd metal, and can be used as a substitute for conventional high-cost bulk metallic glass obtained by quenching of molten metal. This hydrogen separation membrane is free from problems such as defects in the hydrogen separation membrane and unevenness of composition, has a uniform structure, and is capable of separating hydrogen at low cost. Further provided are a sputtering target for forming such as hydrogen separation membrane and its manufacturing method.
摘要:
A challenge of the present invention is to develop a method for repeatedly forming a reverse transferred pattern in a simple and efficient manner onto the surfaces of Zr based, Ti based, Cu based, Ni based and Fe based metallic glass that have supercooled liquid temperatures of not lower than 400° C. and are also required to be molded at not lower than 400° C. (a) An image pattern is converted into bitmap data being mirror reversed with respect to a real image, (b) high energy density light 15 is repeatedly flashed, and the surface of a mold 20 is scanned while one of dot holes 24 is formed by one-time irradiation, to form an image pattern as dots assembled pattern 21 onto the surface of the mold 20 in accordance with the bitmap data, and (c) the dots assembled pattern 21 is reverse-transfer molded onto a metallic glass 1 within a supercooled liquid temperature range Tg-Tx by means of the mold 20 which is for dots assembled pattern formation.
摘要:
Disclosed is a soft magnetic Fe—B—Si-based metallic glass alloy with high glass forming ability which has a supercooled-liquid temperature interval (ΔTχ) of 40 K or more, a reduced glass-transition temperature (Tg/Tm) of 0.56 or more and a saturation magnetization of 1.4 T or more. The metallic glass alloy is represented by the following composition formula: (Fe1-a-bBaSib)100-χMχ, wherein a and b represent an atomic ratio, and satisfy the following relations: 0.1≦a≦0.17, 0.06≦b≦0.15 and 0.18≦a+b≦0.3, M is one or more elements selected from the group consisting of Zr, Nb, Ta, Hf, Mo, Ti, V, Cr, Pd and W, and χ satisfies the following relation: 1 atomic % ≦χ≦10 atomic %. The present invention overcomes restrictions in preparing a metallic glass bar with a thickness of 1 mm or more from conventional Fe—B—Si-based metallic glasses due to their poor glass forming ability, and provides a high saturation-magnetization Fe—B—Si-based metallic glass allowing the formation of bulk metallic glass, which serves as a key technology for achieving a broader application fields of metallic glass products.
摘要翻译:公开了一种具有40℃以上的过冷液体温度间隔(DeltaT i i)的玻璃形成能力高的软磁性Fe-B-Si系金属玻璃合金,玻璃化转变 温度(T T g / T m m)为0.56以上,饱和磁化强度为1.4T以上。 金属玻璃合金由以下组成式表示:(Fe 1-a b B a a b b b)100-chi < 其中a和b表示原子比,并且满足以下关系:0.1 <= a <= 0.17,0.06 <= b <= 0.15和0.18 <= a + b <= 0.3,M是选自Zr,Nb,Ta,Hf,Mo,Ti,V,Cr,Pd和W中的一种或多种元素,并且chi满足以下关系:1原子%<= = 10原子%。 本发明克服了由于玻璃形成能力差而制备与常规Fe-B-Si系金属玻璃相比厚度为1mm以上的金属玻璃棒的限制,提供了高饱和磁化Fe-B-Si 的金属玻璃允许形成块状金属玻璃,其作为实现金属玻璃产品更广泛应用领域的关键技术。