C04B2235/60

Tape casting using slurry from a cavitation apparatus and methods of making same

Provided in one embodiment is a method of making, comprising: applying a hydrodynamic cavitation process to a raw material comprising particles comprising a metal-containing material or a carbon containing material of a first size to produce a slurry having particles comprising the metal-containing material or the carbon-containing material of a second size, smaller than the first size; and tape casting the slurry to form a green tape. Apparatuses employed to apply the method and the exemplary compositions made in accordance with the method are also provided.

BINDER SOLUTIONS COMPRISING A FUGITIVE METAL PRECURSOR FOR USE IN ADDITIVE MANUFACTURING

A binder solution comprises a fugitive metal precursor, a thermoplastic binder, and a solvent. The fugitive metal precursor may comprise an alkaline earth metal, a transition metal, a post-transition metal, a metalloid, a rare earth metal, or combinations thereof. The fugitive metal precursor may comprise a salt such as carboxylate, nitrate, sulfate, carbonate, formate, chloride, halide, derivatives thereof, and combinations thereof. A method of manufacturing a part includes depositing a layer of particulate material on a working surface, selectively applying a binder solution into the layer of particulate material in a pattern representative of a layer of the part, repeating the steps of depositing and selectively applying to form a plurality of layers of particulate material with the applied binder solution, and curing the applied binder solution in the plurality of layers of particulate material with the applied binder solution to evaporate the solvent and form a green body part.

INSULATION SHEET

An object of the present invention is to provide an insulation sheet having high thermal conductivity in the in-plane direction.

The present invention provides an insulation sheet comprising insulating particles and a binder resin, wherein, for the entire cross-section of the sheet perpendicular to the in-plane direction, the insulation sheet contains 75 to 97% by area of the insulating particles, 3 to 25% by area of the binder resin, and 10% by area or less of the voids.

Method for producing ceramic sintered body, and method and device for producing ceramic molded body

The present invention is a sintering method of a ceramic for sintering characterized by forming a layer containing a carbon powder on a surface of an article consisting of a ceramic for sintering, and then irradiating with laser a surface of the carbon powder-containing layer of a lamination obtained.

Slurries for composite materials
11319253 · 2022-05-03 · ·

Slurry and tape compositions include particles of a precursor that converts to a ceramic material when heated to a firing temperature, at least one binder that is capable of adhering the particles of the ceramic precursor together to form a pliable prepreg tape, at least one liquid plasticizer, and at least one solvent in which the binder is dissolved. The solvent may be sufficiently volatile to evaporate from the slurry composition during formation of the tape, yet the tape may also be pliable as a result of the slurry composition containing a sufficient amount of the liquid plasticizer.

Method for drying columnar honeycomb formed body and method for producing columnar honeycomb structure
11168033 · 2021-11-09 · ·

A method for drying at least one unfired columnar honeycomb formed body comprising a raw material composition containing at least one raw material of ceramics, water and at least one heat-gelling binder, and cells defined by partition walls comprising flow paths from a first end surface to a second end surface. The method comprising drying the honeycomb formed body by passing hot gas satisfying 0.8≤T2/T1≤3.3, where T1 represents a gelation temperature of the binder (° C.) and T2 represents a wet-bulb temperature of the hot gas (° C.) through the flow paths from the first end surface and out the second end surface, while surrounding the honeycomb formed body with a correction mold to correct the shape of the honeycomb formed body during drying.

Porous fired granulated body and method for manufacturing the same

A porous fired granulated body is formed by consolidating numerous alumina particles to each other while letting mainly interconnected pores remain in network form across an entire cross section of a granulated body particle. The pores have an inner diameter controlled by a droplet diameter of a pore forming agent and have numerous precipitated alumina crystals formed on inner surfaces thereof. Manufacture is performed by spraying the pore forming agent (emulsion) onto a raw material to form a coating layer of the pore forming agent on a surface of the raw material particle and controlling the inner diameter of the pores. A porous fired granulated body of alumina having a high specific surface area and having higher strength for the same specific surface area can thus be provided by a simple manufacturing method.

Preceramic polymer grafted nanoparticles and methods of making and using same

The present invention relates to preceramic polymer grafted nanoparticles and as well as methods of making and using same. Advantages of such preceramic polymer grafted nanoparticles include, reduced out gassing, desired morphology control and desirable, distinct rheological properties that are not found in simple mixtures. As a result, Applicants' preceramic polymer grafted nanoparticles can be used to provide significantly improved, items including but not limited to hypersonic vehicles, jets, rockets, mirrors, signal apertures, furnaces, glow plugs, brakes, and armor.

PROCESS FOR PREPARING A GRANULAR CERAMIC MIXTURE

A process for preparing a granular ceramic mixture includes the steps of: (a) contacting fluid bed combustion fly ash with an acidic aqueous solution to obtain acidic fluid bed combustion fly ash slurry; (b) removing excess acid from the slurry obtained in step (a) to obtain solid acid treated fluid bed combustion fly ash; and (c) contacting together: (i) the solid acid treated fluid bed combustion fly ash obtained in step (b); (ii) clay; (iii) optionally, feldspar; and (iv) optionally, other ingredients.

PLIABLE NONFLAMMABLE TAPE FOR COMPOSITE MATERIALS
20220242795 · 2022-08-04 ·

Slurry and tape compositions include particles of a precursor that converts to a ceramic material when heated to a firing temperature, at least one binder that is capable of adhering the particles of the ceramic precursor together to form a pliable prepreg tape, at least one liquid plasticizer, and at least one solvent in which the binder is dissolved. The solvent may be sufficiently volatile to evaporate from the slurry composition during formation of the tape, yet the tape may also be pliable as a result of the slurry composition containing a sufficient amount of the liquid plasticizer.