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7481963 |
Method of reducing magnesium loss during sintering of aluminum oxide articles
A method for reducing the loss of magnesium during the sintering of aluminum oxide articles, such as ceramic discharge vessels for lighting applications. Magnesium oxide is added to aluminum oxide...
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7288222 |
Method of producing a carbide sintered compact
A wet-type compacting method of a ceramic powder using a solvent, wherein the ceramic powder is coated with a high polymer organic substance which is substantially insoluble in the solvent so that...
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7261847 |
Process for the functional regeneration of the porosity of moulds used for moulding ceramic objects
A process for the functional regeneration of the porosity of the materials used to make molds ( 2 ) for moulding ceramic objects, when the pores have been damaged by use of the mold ( 2 ),...
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7186368 |
Method for producing an electrode that has a temperature-stabilized conductivity
The invention relates to a method for the production of an electrode for use at high temperatures, in which an electrode green compact is formed from a ceramic slip. The slip is formed from at...
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6998064 |
Thermal insulating material and method of producing same
A thermochemically stable oxidic thermal insulating material presenting phase stability, which can be used advantageously as a thermal insulating layer on parts subjected to high thermal stress,...
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6946013 |
Ceramic exhaust filter
An improved, efficient, and regenerable exhaust emission filter and filter system are provided which incorporate the use of an inorganic, non-woven fiber filter element. The filter is able to...
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6833105 |
Method for making aluminate cement
A process of manufacturing a sulfoaluminate or ferroaluminate cement, and an apparatus for the manufacture. The cement is manufactured from a mixture containing CaCO 3 , Al 3 and/or Al(OH) 3 ,...
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6814903 |
Low-firing temperature method for producing AL2O3 bodies having enhanced chemical resistance
A method for producing high-alumina bodies with superior chemical properties at reduced sintering temperatures, including the steps of providing an alumina powder precursor, adding about 4 weight...
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6787080 |
Colloidal isopressing
Colloidal isopressing provides a rapid method to form an engineering shape from a powder slurry, previously filtered to remove strength degrading inclusions. A slurry composed of a weakly...
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6596224 |
Jetting layers of powder and the formation of fine powder beds thereby
A powder bed ( 32 ) is built up by repeated deposition of a slurry that contains powder. Layers are made by depositing a liquid dispersion of the desired powdered material, which then slip-casts...
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6514454 |
Sol-gel process using porous mold
A sol-gel process for producing dry porous gel monoliths, e.g., silica glass monoliths, in which the successive process steps of gelling, aging and drying all occur within a mold formed of a...
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6491862 |
Method for producing SiC preform with high volume fraction
Disclosed is a method for producing an SiC preform of a high volume fraction used for the manufacture of a metal matrix composite. The method involves the steps of mixing SiC particles of different...
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6489017 |
Molding method for ceramics and metals in aqueous systems by means of temperature variation
The invention relates to a method for producing a solid molded article, in particular a ceramic and/or metallic article made of pulverized particles. The invention also relates to stable...
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6387318 |
Glass-ceramic pressure sensor support base and its fabrication
A dry pressing and slip casting process is provided for the manufacture of glass-ceramic components of the type used in sensors. Both process on starts with a powder composition of SiO 2 (42-59...
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6350404 |
Method for producing a ceramic part with an internal structure
A method for forming a ceramic part with an internal structure includes aqueous slip-casting and a polystyrene foam insert. An aqueous slurry is poured over the insert to form a green body. The...
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6312627 |
Method for preparing ceramic compositions
A method for preparing ceramic particle slurries having controlled rheological properties to allow further processing to ceramic green bodies with improved compaction, green strength and green...
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6242117 |
Ceramics, ceramic blank, manufacturing method thereof, sanitary earthenware and manufacturing method thereof
Ceramics with a glaze applied to the surface of ceramic blank, the bending strength of which ceramic blank is 100 Mpa or higher or the firing shrinkage rate is 7% or higher and the porosity is 7.5%...
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6228293 |
Process for producing a body having a porous matrix from at least one recrystallized material
A process for producing a body having a porous matrix of at least one recrystallized ceramic material, or for producing a similar fiber-reinforced body, includes shaping a raw material batch which...
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6210612 |
Method for the manufacture of porous ceramic articles
An improved porous ceramic article and a method for forming such porous ceramic article. A mixture of ceramic particles and pliable organic hollow spheres is prepared in a liquid, typically as a...
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6190604 |
Process for preparing a preform with high volume fraction SiC
The present invention relates to a method of preparing a preform with a high volume fraction of SiC particles. A slurry containing SiC particles and binders is ball-milled and pressed in an...
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6063314 |
Method for accurate replication of shaped articles using sinterable powders
Shaped article replicas which are proportionately accurate replicas of a shaped article and which are equal, greater or smaller in size than said shaped article are made by preparing a swellable...
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5993722 |
Method for making ceramic heater having reduced internal stress
A ceramic heater device for use in a glow plug for a diesel engine has a gradually varying cross-sectional composition which eliminates distinct interfacial junctions between a resistive layer, an...
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5989492 |
Process including heating and cooling for production of an injection-moulded body
A process for production of a moulded ceramic and/or metallic body from a ductile material comprising one or more ceramic and/or metallic components, which material is fed into the pre-heated mould...
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5972286 |
Process for manufacturing hard metal parts
The invention relates to the field of ceramic and hard metal industries and concerns a process for manufacturing hard metal parts, in particular th having a complex geometry, such as those used for...
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5922271 |
Method for the manufacture of dense-sintered glass ceramic moldings
A method for the manufacture of dense-sintered glass-ceramic shaped objects which have a coefficient of thermal expansion, α, of -0.5×10 -6 /K to 1.8×10 -6 /K in the range between 20° C. and...
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5914086 |
Method of manufacturing structured mouldings
A method of manufacturing a flat, glass-like or ceramic moulding having a structured surface, in which a rotationally symmetrical, moist green body is manufactured from a suspension of a highly...
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5866062 |
Process for producing shaped bodies of silicon dioxide
A shaped body of amorphous silicon dioxide, which has a chemical purity of at least 99.9% and a cristobalite content of at most 1% and which is impermeable to gas, is known. To provide shaped...
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5858289 |
Process for preparing compressed shape of ceramic fiber
A method is now disclosed for the making of compressed refractory fiber shapes, e.g., compressed ceramic fiber shapes, having a textured surface and an aggregate body. The shapes can be obtained by...
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5843348 |
Method for fabricating odontoforms and dental restorations having infused ceramic network
A process for producing a ceramic network material from a ceramic suspension includes casting a suspension in a tooth-shaped mold. The suspension includes dispersed alumina particles in a medium...
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5762841 |
Ceramic porous body having a continuous particle size distribution
A ceramic porous body is constituted of ceramic particles which have a substantially continuous, monotonic size distribution in the thickness direction of the porous body.
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5759669 |
Apparatus and method for screening green sheet with via hole using porous backing material
The present invention relates generally to a new apparatus and method for screening using porous backing material. More particularly, the invention encompasses an apparatus that uses a porous...
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5759481 |
Silicon nitride having a high tensile strength
A ceramic body comprising at least about 80 w/o silicon nitride and having a mean tensile strength of at least about 800 MPa.
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5746969 |
Process for the production of dense silicon nitride materials
A process for the production of dense silicon nitride materials by the nitriding of moulded bodies of silicon powder, silicon nitride powder and sintering additives under normal pressure and...
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5702650 |
Process for producing dental prostheses
A process for producing ceramic dental prostheses, with which ceramic dental prostheses may be produced in the same diversity of shapes and with the same accuracy as metal dental prostheses. The...
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5700419 |
Process for producing sintered ITO compact
A sintered ITO compact having an ultra-high density of at least 7.08 g/cm 3 is produced by a process wherein an aqueous slurry comprised of indium oxide, tin oxide, a binder, a dispersant and an...
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5700409 |
Method of molding an article
A method of molding at article capable of enduring temperatures of at least 1250° F. without deformation or deterioration. High temperature resistant fibers cut to a length of one eighth of an...
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5573982 |
Slurry composition, shaping method using the same, and fired body
A slurry composition is described, which comprises 100 parts by weight of a raw mineral material for white ware and/or a raw mineral material for advanced ceramics, from 0.5 to 20 parts by weight...
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5429781 |
Method of cold forming a powdered refractory material to form a shaped dense refractory article
The method of the present invention comprises preparing a liquid slurry composed of a refractory material in powder form and a deflocculent composed of a vinyl chloride and vinyl acetate resin...
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5326519 |
Process of preparing zirconium oxide-containing ceramic formed bodies
The present invention provides a zirconium oxide-containing ceramic formed body, wherein it is also free from amorphous phases on the grain boundaries and triple points, displays a shrinkage of...
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5288443 |
Mold release agent for ceramic molds used in ceramic slip casting processes
A mold release agent is provided which is compatible for use with slip casting molds formed from alumina, which are more durable than conventional gypsum molds. The preferred mold release agent is...
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5256609 |
Clean burning green ceramic tape cast system using atactic polypropylene binder
Green ceramic formulations comprising an atactic polypropylene-containing binder are suitable for tape casting and can be effectively removed during thermal processing in reducing atmospheres. The...
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5238628 |
Method of producing a deflection yoke core
A shaped product having a shape corresponding to a flare-like deflection yoke core is formed from clay as a raw material of ferrite by a wet molding method; parting grooves are formed in the inner...
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5223195 |
Sintered ceramic article
A sintered ceramic article which is to be joined to metal or form a composite member with metal comprises a metal compound or a metal separated and diffused in surface layers of particles of the...
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5213729 |
Process for preparing a densified beta-phase silicon nitride material having at least one densification aid, and the material resulting therefrom
A process for preparing an alpha-phase silicon nitride material and thereafter sintering to a densified beta-phase silicon nitride material is disclosed which includes comminuting a slurry...
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5194204 |
Process for producing a silicized silicon carbide dipping former
A process for making a ceramic dipping former from silicized silicon carbide by making an absorbent negative mold of the ceramic dipping former containing preparing a suspension containing at least...
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5185113 |
Slip-cast ceramic component and a process for its production
Slip-cast ceramic component having an internal chamfer which is optionally interrupted by an internally projecting area, obtainable by providing a slip cast blank of the ceramic component with...
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5179049 |
Heat treating apparatuses for semiconductors and high purity silicon carbide parts for the apparatuses and a method of making thereof
High purity silicon carbide parts for a heat treating apparatuses for semiconductors; composed mainly of α-type silicon carbide and silicon; characterized in that a particle sizes of the α-type...
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5174935 |
Method of forming a ceramic body
In the method of forming a ceramic body, such as for use as a packing body, a dried array of corrugated layers containing ceramic material is first obtained in a green state. Thereafter, the array...
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5156830 |
Process for preparing an alpha-phase silicon nitride material and thereafter converting to non-densified beta-phase material
A process for preparing an alpha-phase silicon nitride material and thereafter converting to non-densified beta-phase silicon nitride material includes comminuting a slurry including a mixture of...
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5122317 |
Method of superplastically deforming zirconia materials
A method for deforming a ceramic compound by doping a zirconia ceramic material with an effective amount of a transition metal and superplastically deforming the material.
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