sintered (Total 29433 Patents Found)

A method is described for the production of porous bodies from vitreous silica without the use of tools. Vitreous silica wool and/or threads are wound in layers on a form. After the coil has attained a certain minimum thickness, the threads of each succeeding layer are permanently bonded by heating the threads of the p...
A method for producing a high strength sintered silicon carbide, the method comprising: molding a mixture of silicon carbide powder and a sintering aid into a green compact of a predetermined shape: preliminarily sintering the green compact to obtain a preliminarily sintered compact having a relative density higher tha...
A sintered body for thermistor device comprising: at least one element selected from elements of group 3 in a periodic table proviso that La is excluded; at least one element selected from elements of group 2 in a periodic table; Mn; Al; and oxygen, and being substantially free from any transition metal other than Mn a...
An automotive fluid filter comprises a plurality of pellets that are sintered together and define a plurality of pores therebetween for passage of automotive fluid through the pores so as to filter the automotive fluid when the automotive fluid is advanced therethrough. An associated method is disclosed....
A sintered ceramics for mounting a light-emitting element, which is capable of realizing high optical reflectance over the entire region from ultraviolet radiation to visible light. The sintered ceramics has a light-reflective face of which reflectance to light in each wavelength in the range of 250 nm˜750 nm is 70% o...
A method for producing an RFeB system sintered magnet with the main phase grains having a grain size of 1 μm or less with a considerably equal grain size, including: preparing a shaped body oriented by a magnetic field and sintering the shaped body, wherein the shaped body is prepared using an alloy powder of an RFeB ...
The present invention relates to a method for manufacturing a sintered bearing having a bearing surface that forms a bearing gap with a shaft to be supported, in its inner periphery. This manufacturing method includes: a compacting step P 2 of compacting a base powder containing a diffusion alloyed powder 11 prepare...
SINTERED, CEMENTED-CARBIDE COMPOSITIONS, E.G. COBALTBONDED TUNGSTEN CARBIDE, ARE HARDENED BY PERMEATING A BORON-CONTAINING MATERIAL INTO SURFACE OF THE SINTERED COMPOSITION. THE BORONIZING TREATMENT CAN BE EFFECTED FOR EXAMPLE, BY HEATING THE COMPOSITION WITH A SOLID FORM OF THE BORON-CONTAINING MATERIAL, OR B ELECTROL...
A thermocouple is disposed inside the closed end of a tubular sheath made of sintered ceramic refractory material comprising by weight between 3% and 15% of TiO2 between 0.8% and 25% of Cr2O3 between 40% and 95% of MgO the sum of these constituents being at least 75%, and not more than 15% of Fe2O3, the remainder if an...
An object or technical task of the present invention is to provide a ferrite sintered sheet having a dense ferrite microfine structure which has a large μ′ value, a small μ″ value, and a small temperature-dependent change of the μ′ value thereof. The present invention relates to a ferrite ceramics having a com...
cBN粒子と結合相で構成されるcBN焼結体(4)を少なくとも刃先に有する工具を、始端が刃先稜線(8)上にあってその刃先稜線(8)を波打たせる複数の溝(6)がすくい面(5)に形成され、その溝(6)の終端が刃先稜線(...
A sintered product based on mesocarbon microbeads is prepared by pressure-molding mesocarbon microbeads (MCMB) having an MSP (maximum solubility percent) value of 30 to 38% by volume whereby a body is formed, and sintering the body, wherein MSP represents the percentage volume reduction (volume %) determined by heating...
The object of the present invention is to provide a non-magnetic or feebly magnetic diamond sintered compact available for a magnetic article or magnetic material. This object can be achieved by a non-magnetic or feebly magnetic diamond sintered compact whose magnetic susceptibility is at most 3% of Fe, consisting of a...
AlN-base sintered body with a high thermal conductivity is produced by: preparing a compact of a material comprising 100 parts by weight of aluminum nitride and 0.1-10 parts by weight, calculated on metal element, of at least one component selected from the group consisting of elements of Group 4a, 5a and 6a of t...
A metal powder contains Fe as a principal component, Cr in a proportion of 10 to 30 mass %, C in a proportion of 0.15 to 1.5 mass %, Si in a proportion of 0.3 to 1 mass %, and Mn and Ni in a total proportion of 0.05 to 1.6 mass %, wherein when Ti, V, Y, Zr, Nb, Hf, and Ta is defined as a first element, and one element ...
A method for producing an RFeB system sintered magnet according to the present invention includes: a process (S 1 ) of preparing a lump of HDDR-treated raw material alloy that contains a polycrystalline substance including crystal grains having an average grain size of 1 μm or less in terms of an equivalent circle dia...
The present invention provides a process for the hardening treatment of sintered members which can impart sufficient wear resistance thereto at low cost without causing a reduction in dimensional accuracy due to heat distortion. This process for the hardening treatment of sintered members comprises the steps of coating...
A method of manufacturing a diamond sintered body includes the following steps: preparing a diamond powder having a particle size within a range of 0.1 to 10 μm, coating the surface of each particle of the diamond powder with a sintering assistant agent including Pd within a range of 0.01 to 40 percent by weight and a...
To produce a dolomite sinter with a low porosity and a good hydration stability made of difficult-to-sinter raw dolomite, the dolomite is milled and caustic burnt dolomite, dolomite hydrate or semi-burnt dolomite in quantities between 3 and 20% by weight relative to the total mixture is added to the raw dolomite powder...
A toner composition useful for forming a single or full colored image on a transfer sheet, containing a finely divided coloring agent, and a binder resin, wherein the coloring agent includes a compound oxide pigment and a flux. By sintering a ceramic, such as a tile, on which the image-bearing transfer sheet has been a...
There is now provided a sintered titanium-based carbonitride alloy for metal cutting containing hard constituents based on Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and/or W and 3-30% binder phase based on Co and/or Ni. The structure contains well-dispersed and/or as agglomerates, 10-50% by volume hard constituent grains essential...
A homogeneous sintered composite made by press-forming a homogeneous mixture of powders of an agglutinating component, a second component having a melting point higher then the agglutinating component, and an exothermically reactive component to form a compact; heating the compact, then inducing an exothermic reaction ...
The present invention relates to a method for producing a rare earth sintered magnet including the steps of: molding a mixture of magnetic powder containing a rare earth compound and oil-extended rubber containing oil and rubber to produce a molded body; removing the oil-extended rubber from the molded body; and calcin...
One aspect relates to an electrical bushing for an implantable device including an electrically insulating base body and at least one electrically conductive bushing body that is embedded in at least one bushing opening that extends through the base body. The base body is produced from a sintered ceramic material, char...
Sintered fiber filters are provided that can afford high particle capture efficiency and/or low pressure drop during operation, and are useful in applications such as semiconductor processing. The shape of at least a portion of the individual fibers (e.g., metal fibers) used to make the filter have a three-dimensional ...
Provided is a polycrystal MgO sintered body which is capable of having a sintered density close to a theoretical density thereof, and exhibiting excellent mechanical properties and heat conductivity, while reducing contamination of an atmosphere due to gas generation, and a production method for the sintered body. The ...
A polycrystalline translucent alumina sintered body having high in-line transmission, which is suitable for an envelope for a high pressure vapor discharge lamp, is produced by adding to alumina powder having a purity of more than 99.8% MgO or a compound forming MgO in an amount of 0.01-0.1% by weight calculated as MgO...
A secondary hardening type high temperature wear-resistant sintered alloy body comprising 0.4 to 15 wt. % of at least one species of metal carbide forming element which is selected from the group consisting of W, Mo, V, Ti, Nb, Ta and B; 5 to 35 wt. % of at least one species of austenite forming element which is select...
The invention relates to a diamond sintered compact wherein diamond crystal particles are uniformly oriented in a particular direction and the method for producing the same, and has for an object to provide a diamond sintered compact having a high thermal conductivity particularly suitable for heat sink for use in the ...
Glass or ceramic products including glass optical waveguides are produced by a vapor phase oxidation process wherein β-diketonate complexes of selected metals having significant vapor pressures at some temperature below their decomposition temperatures are vaporized, transported to an oxidation site in the vapor phase...
To provide an iron-based sintered alloy excellent in shape accuracy and wear resistance, and reduced hostility to mating materials, and having sufficient hardness after tempering, as well as a manufacturing method thereof. Iron-based alloy powder of a composition comprising Cr: from 1 to 3.5 mass %, Mo: from 0.2 to 0.9...
A metal powder for powder metallurgy containing iron as a main component, characterized in that it further contains an indium soap; and the metal powder for powder metallurgy, characterized in that it still further contains, in addition to said indium, at least one selected from among a bismuth soap, a nickel soap, a c...
A wear resistant material containing no cobalt is used for a sliding portion of a control rod driving mechanism of a nuclear plant for reducing the exposure dose due to elution of cobalt and ensuring smooth driving of a control rod under a high load for a long time. A control rod driving mechanism employs a roller and ...