Abstract: There is provided a nickel alloy having an excellent creep strength as well as high-temperature oxidation resistance. The nickel alloy of the present invention comprises, by mass percent, Cr in a range of 11.5 to 11.9%, Co in a range of 25 to 29%, Mo in a range of 3.4 to 3.7%, W in a range of 1.9 to 2.1%, Ti in a range of 3.9 to 4.4%, Al in a range of 2.9 to 3.2%, C in a range of 0.02 to 0.03%, B in a range of 0.01 to 0.03%, Zr in a range of 0.04 to 0.06%, Ta in a range of 2.1 to 2.2%, Hf in a range of 0.3 to 0.4%, and Nb in a range of 0.5 to 0.8%, the balance being Ni and unavoidable impurities, and contains carbides and borides precipitating in crystal grains and at grain boundaries.

Abstract: A heat-resistant superalloy having chromium, aluminum, cobalt, titanium, and ruthenium added thereto as main components, and having a subcomponent(s) optionally added thereto, the remainder, excluding the main components and the subcomponent(s), comprising nickel and an impurity inevitably contained, wherein the amount of the chromium added is 2 to 25% by mass, the amount of the aluminum added is 0.2 to 7% by mass, the amount of the cobalt added is 19.5 to 55% by mass, the amount of the titanium added is [0.17×(% by mass for cobalt?23)+3] to [0.17×(% by mass for cobalt?20)+7] % by mass (with the proviso that the amount of the titanium added is 5.1% by mass or more), and the amount of the ruthenium added is 0.1 to 10% by mass.

Abstract: A heating section 20 having heating elements using carbon which generates heat when a high-frequency electric current is fed to a coil whose pitch can be adjusted as desired is arranged in a heating chamber 10. A cooling chamber 80 configured to cool metal to be heat-treated, which has been heated by the heating elements, is disposed below the heating chamber 10 in communication with the heating chamber 10 via a connection section 60. A water-cooled vertically movable shaft 90 which is capable of supporting the metal to be heat-treated and entering the heating chamber 10 is disposed so as to penetrate through the bottom portion of the cooling chamber 80.

Abstract: The Ni-based single crystal alloy disclosed here is a single crystal and has a chemical composition containing, as % by mass, Co: 8 to 12%, Cr: 5 to 7.5%, Mo: 0.2 to 1.2%, W: 5 to 7%, Al: 5 to 6.5%, Ta: 8 to 12%. Hf: 0.01 to 0.2%, Re: 2 to 4%, Si: 0.005 to 0.1%, with the balance of Ni and inevitable impurities.

Abstract: Provided is an Ni-based single crystal superalloy wherein the ingredients have a composition containing, as ratio by mass, from 5.0% by mass to 7.0% by mass of Al, from 4.0% by mass to 8.0% by mass of Ta, from 0% by mass to 2.0% by mass of Mo, from 3.0% by mass to 8.0% by mass of W, from 3.0% by mass to 8.0% by mass of Re, from 0% by mass to 0.50% by mass of Hf, from 3.0% by mass to 6.0% by mass of Cr, from 0% by mass to 9.9% by mass of Co, from 1.0% by mass to 14.0% by mass of Ru, and from 0.1% by mass to 4.0% by mass of Nb, with the balance of Ni and inevitable impurities. The alloy prevents TCP phase precipitation at high temperatures, therefore having improved strength at high temperatures and having oxidation resistance at high temperatures. Specifically, the invention is to provide a high-performance Ni-based single crystal superalloy having well balanced high-temperature strength and high-temperature oxidation resistance in practical use.

Abstract: Disclosed is a novel heat-resistant superalloy for turbine disks having a chemical composition consisting of, in mass %, 19.5-55% of cobalt, 2-25% of chromium, 0.2-7% of aluminum, 3-15% of titanium and the balance of nickel and inevitable impurities.

Abstract: The object of the present invention is to provide an Ni-based single crystal super alloy capable of improving strength by preventing precipitation of a TCP phase at high temperatures. This object is achieved by an Ni-based single crystal super alloy having a composition comprising 5.0-7.0 wt % of Al, 4.0-10.0 wt % of Ta, 1.1-4.5 wt % of Mo, 4.0-10.0 wt % of W, 3.1-8.0 wt % of Re, 0-0.50 wt % of Hf, 2.0-5.0 wt % of Cr, 0-9.9 wt % of Co and 4.1-14.0 wt % of Ru in terms of its weight ratio, with the remainder consisting of Ni and unavoidable impurities. Furthermore, in this Ni-based single crystal super alloy, when lattice constant of matrix is taken to be a1 and lattice constant of precipitation phase is taken to be a2, a2?0.999a1.

Abstract: Provided is an Ni-based single crystal superalloy wherein the ingredients have a composition containing, as ratio by mass, from 5.0% by mass to 7.0% by mass of Al, from 4.0% by mass to 8.0% by mass of Ta, from 0% by mass to 2.0% by mass of Mo, from 3.0% by mass to 8.0% by mass of W, from 3.0% by mass to 8.0% by mass of Re, from 0% by mass to 0.50% by mass of Hf, from 3.0% by mass to 7.0% by mass of Cr, from 0% by mass to 9.9% by mass of Co and from 1.0% by mass to 10.0% by mass of Ru, with the balance of Ni and inevitable impurities. The alloy prevents TCP phase precipitation at high temperatures, therefore having improved strength at high temperatures and having oxidation resistance at high temperatures.

Abstract: A Ni-base superalloy having a chemical composition comprising Cr: 3.0-5.0 wt %, Co: 5.0-10.0 wt %, Mo: 0.5-3.0 wt %, W: 8.0-10.0 wt %, Ta: 5.0-8.0 wt %, Nb: 3.0 wt % or less, Al: 4.5-6.0 wt %, Ti: 0.1-2.0 wt %, Re: more than 3.0-4.0 wt %, Ru: 0.2-4.0 wt %, Hf: 0.01-0.2 wt %, and the balance being Ni and unavoidable impurities, a method for producing the same, and turbine blade or turbine vane components are disclosed. The Ni-base superalloy has high creep strength and textural stability under high temperature environment, and is excellent in applicability to turbine blade or turbine vane components of large-sized gas turbines.

Abstract: A Ni-based single crystal superalloy according to the invention has, for example, a composition including: 5.0 to 7.0 wt % of Al, 4.0 to 10.0 wt % of Ta, 1.1 to 4.5 wt % of Mo, 4.0 to 10.0 wt % of W, 3.1 to 8.0 wt % of Re, 0.0 to 2.0 wt % of Hf, 2.5 to 8.5 wt % of Cr, 0.0 to 9.9 wt % of Co, 0.0 to 4.0 wt % of Nb, and 1.0 to 14.0 wt % of Ru in terms of weight ratio; and the remainder including Ni and incidental impurities. In addition, the contents of Cr, Hf and Al are preferably set so as to satisfy the equation OP?108. According to the Ni-based single crystal superalloy of the invention, high creep strength can be maintained and the oxidation resistance can be improved.

Abstract: A method and apparatus is disclosed by which communication with a higher degree of accuracy can be achieved with increased easiness. A transmission apparatus transmits base data formed by dividing transmission data and redundant data produced by exclusive OR operation using a coefficient matrix prepared in advance to a reception apparatus. The base data and the redundant data have restoration relating information relating to a restoration process added thereto. The reception apparatus specifies lost base data based on the information added to the received base data and redundant data and aligns the acquired redundant data. The reception apparatus utilizes a coefficient matrix prepared in advance to perform exclusive OR operation to restore the lost base data and produces reception data corresponding to the original transmission data. The apparatus and method can be applied to a communication system.

Abstract: A Ni-base superalloy of the present invention essentially includes, by weight %, Co: 9 to 11%, Cr: 9 to 12%, Mo: up to 1%, W: 6 to 9%, Al: 4 to 5%, Ti: 4 to 5%, Nb: up to 1%, Ta: up to 3%, Hf: 0.5 to 2.5%, Re: up to 3%, C: 0.05 to 0.15%, B: 0.005 to 0.015%, Zr: up to 0.05%, and the balance of Ni and inevitable impurities. This alloy, as a component material of an industrial gas turbine, has an excellent resistance to corrosion at high temperatures to deal with low-quality fuel and a resistance to oxidation at high temperatures and high-temperature strength to deal with improvement in thermal efficiency due to high-temperature demands and can ensure a high yield at a casting process.

Abstract: A Ni-base superalloy having a chemical composition comprising Al: 4.5-7.0 wt %, Ta+Nb+Ti: 0.1-4.0 wt %, with Ta being less than 4.0 wt %, Mo: 1.0-8.0 wt %, W: 0.0-10.0 wt %, Re: 2.0-8.0 wt %, Hf: 0.0-1.0 wt %, Cr: 2.0-10.0 wt %, Co: 0.0-15.0 wt %, Ru: 0.0-5.0 wt %, and the balance being Ni and unavoidable impurities, and a method for producing the same are disclosed. The Ni-base superalloy has excellent creep property at high temperature and is suitable for use as a member at high temperature under high stress.

Abstract: A nickel-base superalloy having excellent oxidation resistance is provided. It is useful as high-temperature members such as turbine blades and turbine vanes for jet engines or gas turbines. The nickel-base superalloy has a composition containing Co: 0.1 to 15% by weight, Cr: 0.1 to 10% by weight, Mo: 0.1 to 4.5% by weight, W: 0.1 to 15% by weight, Al: 2 to 8% by weight, Ta+Nb+Ti: 0 to 16% by weight, Hf: 0 to 5% by weight, Re: 0.1 to 16% by weight, Ru: 0.1 to 16% by weight, Si: 0.2 to 5% by weight and a balance made of Ni and unavoidable impurities.

Abstract: A Ni-base directionally solidified superalloy and a Ni-base single-crystal superalloy, which have superior creep strength at a high temperature, consists essentially of from 5.0 percent by weight to 7.0 percent by weight of Al, from 4.0 percent by weight to 16.0 percent by weight of Ta+Nb+Ti, from 1.0 percent by weight to 4.5 percent by weight of Mo, from 4.0 percent by weight to 8.0 percent by weight of W, from 3.0 percent by weight to 8.0 percent by weight of Re, 2.0 percent by weight or less of Hf, 10.0 percent by weight or less of Cr, 15.0 percent by weight or less of Co, from 1.0 percent by weight to 4.0 percent by weight of Ru, 0.2 percent by weight or less of C, 0.03 percent by weight or less of B, and Ni and inescapable impurities as a balance. The superalloys can be used for a turbine blade, a turbine vane and the like of a jet engine, an industrial gas turbine and the like.

Abstract: Disclosed is a novel heat-resistant superalloy for turbine disks having a chemical composition consisting of, in mass %, 19.5-55% of cobalt, 2-25% of chromium, 0.2-7% of aluminum, 3-15% of titanium and the balance of nickel and inevitable impurities.

Abstract: There is provided a Co-free Ni-base superalloy having a composition containing 1.0 to 10.0 wt % of Cr, 0.1 to 3.5 wt % of Mo, 7.5 to 10.0 wt % of W, 4.0 to 8.0 wt % of Al, 12.0 wt % or less of at least one species of Ta, Nb and Ti, 0 to 2.0 wt % of Hf, 0.1 to 5.0 wt % of Re and the remainder comprised of Ni and unavoidable impurities. The Co-free Ni-base superalloy exhibits high composition stability over a long period of time and is excellent in creep properties at high temperature, and also suitable as a turbine blade or turbine vane of atomic power generation in which maintenance for radioactive contamination and so forth are easy.

Abstract: A Ni-base superalloy of the present invention essentially includes, by weight %, Co: 9 to 11%, Cr: 9 to 12%, Mo: up to 1%, W: 6 to 9%, Al: 4 to 5%, Ti: 4 to 5%, Nb: up to 1%, Ta: up to 3%, Hf: 0.5 to 2.5%, Re: up to 3%, C: 0.05 to 0.15%, B: 0.005 to 0.015%, Zr: up to 0.05%, and the balance of Ni and inevitable impurities. This alloy, as a component material of an industrial gas turbine, has an excellent resistance to corrosion at high temperatures to deal with low-quality fuel and a resistance to oxidation at high temperatures and high-temperature strength to deal with improvement in thermal efficiency due to high-temperature demands and can ensure a high yield at a casting process.

Abstract: When transmitting live information data, a reproduction start waiting time associated with reproduction of the live information data on the receiving side can be reduced. Encoded data is divided in sequence into a plurality of data segments each having a predetermined time length. In this case, the time length of each data segment is increased in sequence for each data segment until a predetermined time length is reached and is fixed to the predetermined time length after the predetermined time length is reached. The plurality of data segments which are formed in a divided manner are converted into a plurality of segmented packet data or a plurality of continuous packet data, and the data is transmitted through individual data transmission channels, thus performing multiple-channel parallel transmission.

Abstract: A memory card is disclosed which has a card body (2) having a concavity (9) formed at the forward end thereof in the inserting direction and in which terminals (5) are disposed and projections (10) are formed between the terminals (5) to prevent the terminals (5) from being touched or accessed from outside. A receptacle for the memory card is also disclosed. The memory card has a simple structure designed to positively protect the terminals and easily let out dust or the like from inside, thereby permitting to assure a positive connection with the receptacle.