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WO/1991/012912A1 |
Subject a heated, non-molten, intimate admixture of a base metal and a superconducting oxide material to pressure sufficient to form a densified article. The densified article is either superconducting as formed or capable of being rende...
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WO/1991/009981A1 |
A sintered alloy bearing produced by compaction molding and sintering a composition comprising 20 to 80 wt % of iron, 15 to 77 wt % of copper, 1 to 26 wt % of zinc, 0.5 to 7 wt % or less of lead, 0.5 to 7 wt % of tin and the balance of u...
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WO/1991/008256A1 |
The present invention relates to a composite base material for the preparation of composite sintered materials reinforced with long fibres, characterized in that said matrix is formed from a combination of a polymer organic material and/...
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WO/1991/007513A2 |
An aluminum based alloy is produced from a charge containing a rapidly solidified aluminum alloy and a carbidiferous agent in an amount ranging from about 0.01 to 10 % by weight of the charge. The charge is ball milled energetically to u...
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WO/1991/002098A1 |
A cast composite material is prepared from a modified aluminum-containing matrix and reinforcement particles mixed into the matrix. From about 15 to about 130, preferably from about 20 to about 50, parts per million of an element, prefer...
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WO/1990/015682A1 |
Bonding additives for refractory metallization compositions allow for circuit traces having good resistivities and adhesion values in excess of 6 kpsi, generally between about 10 and 20 kpsi. The inks are provided in formulations devoid ...
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WO/1990/008612A1 |
Substantially dense, void-free ceramic-metal composites are prepared from components characterized by chemical incompatibility and non-wetting behavior. The composites have a final chemistry similar to the starting chemistry and microstr...
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WO/1990/005199A1 |
Conventional materials made by powder metallurgical technology are not particularly resistant to heat and mechanical stresses, in particular impact and friction. A sintered material whose resistance is greater than that of known material...
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WO/1990/004657A1 |
The invention relates to Cu-based sintered alloy, which contains 10 to 40 % of Z, 0.3 to 6 % of Al, 0.03 to 1 % of oxygen and, as an additional element, either 0.1 to 5 % of at least one of Fe, Ni and Co or one of 0.1 to 5 % of Mn, 0.1 t...
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WO/1990/002620A1 |
An aluminum based metal matrix composite is produced from a charge containing a rapidly solidifed aluminum alloy and particles of a reinforcing material present in an amount ranging from about 0.1 to 50 percent by volume of the charge. T...
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WO/1990/002824A1 |
A reinforced aluminium or aluminium alloy composite material having a matrix of aluminium or aluminium alloy grains and comprising 0.1-10 % by volume of small refractory particles which are substantially homogeneously distributed in the ...
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WO/1990/001568A1 |
A titanium-based metal matrix microcomposite material. About 1 % to about 25 % by weight TiB2 is substantially uniformly incorporated in a titanium-based alloy matrix. The microcomposite material is formed by sintering at a temperature s...
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WO/1990/000685A1 |
In the process described, metal powder is mixed with not more than approximately 20 wt.% of ceramic particles, and the mixture is pressed to obtain a bearing of appropriate shape, while retaining a pore volume of at least 15 %. The press...
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WO/1989/012899A1 |
Dense vias are made from a metallization composition including a refractory metal (e.g., tungsten, molybdenum), alumina, a sintering aid (e.g., nickel, palladium), and optionally a bonding additive. Processes for producing such vias incl...
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WO/1989/010419A1 |
A contact material contains silver and at least one metal, metal alloy or metallic compound having a higher melting point than silver. According to the invention, the material contains in addition to silver (Ag), from 2 to 50 wt.% of at ...
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WO/1989/010417A1 |
A contact material contains silver and at least one metal, metal alloy or metallic compound having a higher melting point than silver. According to the invention, the material contains, in addition to silver (Ag), from 2 to 50 % of at le...
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WO/1989/009840A1 |
Process for producing a ductile, high strength, oxide dispersion hardened sintered alloy based on a metal having a high melting point. In the past, oxide dispersion has played only a minor role in comparison with other known processes fo...
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WO/1989/009478A1 |
A semifinished product for electrical contacts, made of a composite material based on silver and tin oxide, has a microstructure in which regions containing little or no metallic oxide alternate with regions in which all or most of the m...
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WO/1989/008155A1 |
Disclosed is a composite material comprising a superconducting oxide in association with a ductile metal; the superconducting oxide formed of at least one metallic element and oxygen; the ductile metal having a lower oxidation potential ...
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WO/1989/007661A1 |
The present invention relates to the formation of whisker reinforced metal matrix composites in which complex boride or carbide whiskers are distributed throughout a metal, metal alloy, or intermetallic matrix. Exemplary complex boride w...
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WO/1989/006287A2 |
An aluminum based metal matrix composite is produced from a charge containing a rapidly solidified aluminum alloy and particles of a reinforcing material present in an amount ranging from about 0.1 to 50 percent by volume of the charge. ...
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WO/1989/005031A1 |
A sintered Fe-Nd-B magnet with improved coercitive field strength and reduced temperature dependence of the latter is composed of 25 to 50 wt. % Nd, 0.5 to 2 wt. % B, 0 to 5 wt. % Al, 0.5 to 3 wt. % O, and the remainder of Fe and ordinar...
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WO/1989/003897A1 |
In a method of producing a sintered aluminium nickel alloy particles of powder are formed with nickel surfaces (either on nickel or on ceramic material). The surface of the nickel is oxidised and these particles are then mixed with alumi...
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WO/1989/003896A1 |
Cermet alloy having excellent high-temperature abrasion resistance and high-temperature strength, and a composite member comprising the cermet alloy provided in a firmly bound layer form on the outer or inner periphery of an alloy base m...
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WO/1989/001706A1 |
A dispersion of ceramic superconductor particles is distributed in a matrix of a continuously connected nonferromagnetic metal. This bi-phase composite permits the material to exhibit the mechanical and thermal properties of metal and ye...
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WO/1989/000614A1 |
A method for preparing cast composite materials of nonmetallic carbide particles in a metallic matrix, wherein the particles are roasted and then mixed into a molten metallic alloy to wet the molten metal to the particles, and the partic...
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WO/1988/006190A1 |
Method and furnace providing for first obtaining a melt in a crucible (10) having a rectangular horizontal cross-section, feeding an oxygen-containing gas (3) into the melt under its surface through tuyeres (13) with nozzles (14), mounte...
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WO/1988/005830A1 |
A creep-resistant sintered alloy having a tiered structural arrangement of one or several refractory metals Mo, W, Nb, Ta, V, Cr containing certain doping agents, as well as a process for producing the same. The special doping agents are...
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WO/1988/003520A1 |
A method for the introduction of in-situ precipitated second phase materials, such as ceramic or intermetallic particles in a metal matrix, to a host metal. When an initial solvent-assisted reaction is utilized, metal-second phase compos...
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WO/1988/003574A1 |
A method for the in-situ precipitation of second phase materials, such as ceramic or intermetallic particles, in a metallic matrix. By means of the Direct Addition Process, metal-second phase composites having highly superior properties ...
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WO/1988/003573A2 |
A method for the in-situ precipitation of second phase materials, such as ceramic or intermetallic particles, in a substantial volume fraction of solvent metal matrix. The invention involves the propagating reaction of the second phase-f...
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WO/1987/006624A1 |
A method and apparatus for preparing cast composite materials of non metallic particles in a metallic matrix, wherein particles are mixed into a molten metallic alloy to wet the molten metal to the particles, and the particles and metal ...
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WO/1987/000556A1 |
An oxidation resistant alloy comprising about 3 to 14 percent Cr by weight, about 3 to 50 percent by volume Si3N4, and the balance selected from the group consisting of Fe, Ni, Co and alloys of these metals. Preferably, the Cr content is...
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WO/1986/007613A1 |
A process for the dispersion hardening of copper, silver or gold in which melts based on the matrix metal with stoechiometric additions of boron and boride-forming metals are heated to 300 - 700o and then subjected to an extremely rapid ...
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WO/1986/006366A1 |
Metal-ceramic composites of aluminum or aluminum alloy materials, having discrete finely dispersed particles of ceramic materials such as TiB2, provide strengthened and hardened materials having improved fatigue, elongation, and elastic ...
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WO/1986/005212A1 |
A method of producing an alloy containing titanium carbide particles, the method comprising thoroughly dispersing carbon powder particles into a metal melt, and causing the dispersed carbon particles to react with titanium within the met...
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WO/1986/004930A1 |
A microcomposite material having a matrix of a titanium-base alloy, the material further including about 10-80% by weight TiC substantially uniformly dispersed in the matrix. Several methods of cladding a macrocomposite structure includi...
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WO/1985/003463A1 |
A process for making a novel alloy of a dispersion strengthened copper by blending dispersion strengthened copper powder and a powdered modifying metal, heat treating the blend to form the alloy, and the compacting and working the compac...
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WO/1984/003306A1 |
Pulverulent material for thermal projection comprising a mixture of a self-pickling parent metal alloy powder and a powder of at least one metal carbide. The carbide content of the mixture is comprised between 20 and 80 % by weight based...
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WO/1983/002956A1 |
Substantially completely deoxidized, consolidated dispersion-strengthened copper stock of sizable cross-section and particulates capable of being thus consolidated into such stock are shown. The stock exhibits ductility substantially gre...
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WO/1983/000884A1 |
An inoculating alloy for addition to molten cast iron. The composition is a silicon ferro alloy containing five to eight percent calcium as its active ingredient.
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WO/1982/001897A1 |
The material allowing this stratification contains a physical mixture of a metal powder on one hand, made of a self-flowing alloy based on Ni, Fe and Co, and on the other hand of a hard powder material of a melted tungsten-carbide alloy ...
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WO/1981/003295A1 |
Precision molded articles, such as die cavities, pertaining to the field of powder metallurgy, and having high hardness and impact resistance, are made by combining granules of refractory and granules of a first metal or alloy which has ...
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WO/1981/002587A1 |
The fine particle memory alloy, of the Cu/Zn/Al, obtained in a high (Beta) temperature phase, is prepared by powder metallurgy technique and comprises dispersoids in the shape of Y2O3 - et/or TiO2 - particles which are introduced in the ...
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WO/1981/000977A1 |
Process for producing dispersion-strengthened precious metal alloys having superior creep resistance. According to this invention precious metal powders and dispersoids are mechanically alloyed together.
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WO/1981/000644A1 |
A material and a process for use in making electrical contacts. The material is produced in powder form suitable for later processing into electrical contacts by standard metallurgical techniques generally involving compacting the powder...
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WO/1980/000575A1 |
A wear-resistant, molybdenum-iron boride alloy (10) has a microstructure of a primary boride phase (12) and a matrix phase (14). The primary boride phase (12) comprises molybdenum alloyed with iron and boron, and the matrix phase (14) co...
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WO/1980/000352A1 |
A process for producing graphite-containing aluminum alloy by introducing graphite particles into a molten aluminum. Graphite particles are prevented from floating on the molten aluminum upon being introduced thereinto, by adding titaniu...
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WO/1979/001103A1 |
An article, for example a piston for an internal combustion engine is formed of two or more layers of different material compositions in which there is a controlled graded change of composition between layers or within at least one of th...
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JP7492827B2 |
An improved electrical contact alloy, useful for example, in vacuum interrupters used in vacuum contactors is provided. The contact alloy according to the disclosed concept comprises copper particles and chromium particles present in a r...
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