Geo2 Technologies, Inc.

Other

Ge02 Technologies, Inc.

Geoz Technologies, Inc.

William M Carty

Bilal Zuberi

Sunilkumar C Pillai

James Jenq Liu

Robert G Lachenauer

Biprodas Dutta

Rachel A Dahl

Michael Q Sheppard

Hyojin Lee

Jerry G Weinstein

A method of preparing a substrate having a wetting surface, including confirming the presence of an open, interconnected pore network in a ceramic substrate to be wetted with a first metal, filling the open, interconnected pore network with a second metal, exuding the second metal to coat the surface of the substrate, and wetting the substrate with the first metal. The ceramic substrate is not decomposed by the first metal and the ceramic substrate is not decomposed by the second metal.

Method for fabricating perfectly wetting surfaces

A method of increasing efficiency in glass batch melting by controlling the reaction paths of batch constituents as they melt, preventing early formation, flow, segregation and pooling of low-viscosity liquids. The glass batch raw material components are separated into first and second portions with different respective compositions, resulting in first and second respective compositions having first and second respective reaction paths. The respective portions are combined with remaining raw materials to define a mixture which is then introduced into the melter and reacted to yield a homogeneous glass melt. The first composition has a first melting temperature having a first reaction path resulting in a first liquid having sufficient viscosity to minimize flowing. The second composition has a second melting temperature and the first liquid fluxes the second composition to yield a molten glass composition.

Selective glass batching methods for improving melting efficiency and reducing gross segregation of glass batch components

A method of the controlling the chemical and physical characteristics of a body formed from a powder precursor, including measuring a predetermined amount of a first particulate precursor material, wherein the first particulate precursor material defines a plurality of respective generally spherical first phase particles, adhering second phase particles to the respective first phase particles to define composite particles, forming the composite particles into a green body, and heating the green body to yield a fired body. The second phase particles adhered to the first phase particles are substantially uniformly distributed and a respective first phase particle defines a first particle diameter that is at least about 10 times larger than the second phase diameter defined by a respective second phase particle. The composite particles define a predetermined composition.

Controlled distribution of chemistry in ceramic systems

A method of the controlling the chemical and physical characteristics of a body formed from powder precursors, including measuring a predetermined amount of a first generally spherical particles, adhering smaller second particles to the respective first particles to define composite particles, forming the composite particles into a green body, and sintering the green body to yield a densified body. The second particles adhered to the first phase particles are substantially uniformly distributed and a respective first particle defines a first particle diameter that is typically at least about 10 times larger than the smaller diameter defined by a respective second particle. The composite particles define a predetermined composition.

Controlled distribution of nano-scale sintering dopants

A highly porous substrate is provided using an extrusion system. More particularly, the present invention enables the production of a highly porous substrate. Depending on the particular mixture, the present invention enables substrate porosities of about 60% to about 90%, and enables advantages at other porosities, as well. The extrusion system enables the use of a wide variety of fibers and additives, and is adaptable to a wide variety of operating environments and applications. Fibers, which have an aspect ratio greater than 1, are selected according to substrate requirements, and are typically mixed with binders, pore-formers, extrusion aids, and fluid to form a homogeneous extrudable mass. The homogeneous mass is extruded into a green substrate. The more volatile material is preferentially removed from the green substrate, which allows the fibers to form interconnected networks. As the curing process continues, fiber to fiber bonds are formed to produce a structure having a substantially open pore network. The resulting porous substrate is useful in many applications, for example, as a substrate for a filter or catalyst host, or catalytic converter.

Extruded porous substrate and products using the same

A method of manufacturing a fibrous material includes mixing at least two cordierite precursor materials to form a mixture. One or more of the at least two cordierite precursor materials is in a form of a fiber and the mixture includes about 43% to about 51% by weight SiO, about 36% to about 41% by weight AlO, and about 12% to about 16% by weight MgO. The method also includes extruding the mixture to create a fibrous body, and heat treating the fibrous body, at a temperature of about 1200&#xb0; C. to about 1420&#xb0; C., to form the fibrous material including about 50% to about 95% by weight cordierite. A fibrous body includes an extruded substrate having a plurality of fibers including about 50% to about 95% by weight cordierite. The extruded substrate has a coefficient of thermal expansion in at least one direction of less than about 3.8&#xb7;10per &#xb0; C.

Fibrous cordierite materials

A porous fibrous honeycomb substrate having an aluminum titanate composition and methods of producing the same are provided herein. Precursors of aluminum titanate are provided in an extrudable mixture that includes fiber materials to form a green honeycomb substrate. When cured, the precursors of aluminum titanate form an aluminum titanate composition, with the fiber materials defining the porous microstructure. Various composite structures including aluminum titanate are provided to form a porous honeycomb substrate that can be configured to be filtration media and/or a catalytic host.

Fibrous aluminum titanate substrates and methods of forming the same

A fibrous ceramic material comprises a plurality of fibers having a modified aluminosilicate compositional structure (i.e., x(RO).y(AlO).z(SiO) or w(MO).x(RO).y(AlO).z(SiO)). The fibrous ceramic material is form by combining two or more x(RO).y(AlO).z(SiO) or w(MO).x(RO).y(AlO).z(SiO) precursors in which at least one of the two or more precursors is in fiber form. The resulting fibrous ceramic material has a low coefficient of thermal expansion (i.e., &#x2266;4.7&#xd7;10-6/&#xb0; C.).

Low coefficient of thermal expansion materials including modified aluminosilicate fibers and methods of manufacture

A fibrous ceramic material comprises a plurality of fibers having a RMgAlSiOor RMgAlSiOcompositional structure. The fibrous ceramic material is form by combining two or more RMgAlSiOor RMgAlSiOprecursors in which at least one of the two or more RMgAlSiOor RMgAlSiOprecursors is in fiber form. The fibrous ceramic material is shaped to form a fibrous body in which at least about 20% of all fibers therein are aligned in a substantially common direction.

Low coefficient of thermal expansion materials including nonstoichiometric cordierite fibers and methods of manufacture

A method of forming a glass melt, including measuring predetermined amounts of raw materials to define a glass batch, combining predetermined amounts of sources of silica, calcia and boron from the glass batch to yield a first pre-batch, substantially consolidating the first pre-batch into first pre-batch granules, combining predetermined amounts of sources of silica, calcia, and alumina from the glass batch to yield a second pre-batch, mixing the first and second pre-batches and any remaining portion of the glass batch to yield a batch mixture, and heating the batch mixture to yield a glass melt. Typically, the raw materials at least include sources of silica, alumina, calcia and boron and each respective first pre-batch granule defines a cohesive agglomerate.

Selective batching for boron-containing glasses

A method is provided for producing a highly porous substrate. More particularly, the present invention enables fibers, such as organic, inorganic, glass, ceramic, polymer, or metal fibers, to be combined with binders and additives, and extruded, to form a porous substrate. Depending on the selection of the constituents used to form an extrudable mixture, the present invention enables substrate porosities of about 60% to about 90%, and enables process advantages at other porosities, as well. The extrudable mixture may use a wide variety of fibers and additives, and is adaptable to a wide variety of operating environments and applications. Additives can be selected that form inorganic bonds between overlapping fibers in the extruded substrate that provide enhanced strength and performance of the porous substrate in a variety of applications, such as, for example, filtration and as a host for catalytic processes, such as catalytic converters.

Extruded porous substrate having inorganic bonds

A porous cordierite substrate and a method of forming a porous cordierite substrate including providing a fiber that includes at least one cordierite precursor material and providing at least one organic binder material. The fiber and the organic binder material are mixed with a fluid. The mix of fiber, organic binder material and fluid is extruded into a green substrate. The green substrate is fired to enable the formation of bonds between the fibers and to form a porous cordierite fiber substrate.

Cordierite fiber substrate and method for forming the same

A method of measuring the coefficient of thermal expansion of a ceramic material, including the steps of applying a glaze to a substantially densified refractory body, wherein the coefficient of thermal expansion of either the glaze or the body is known, bonding the glaze to the body, putting the glaze insufficient tension to induce crazing, measuring the average distance between cracks in the crazed glaze; and determining the unknown coefficient of thermal expansion of the glaze or body.

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Alfred Station, NY, United States of America

William M Carty