Corning Incorporated

Corning Glass Works

John L Stempin

Dale R Wexell

Ronald Leroy Stewart

James E Flannery

Kishor Purushottam Gadkaree

George Edward Berkey

Steven Bruce Dawes

Kenneth Chyung

Joseph Frank Mach

Alvin J Salkind

M Grayson Alexander

Thomas N Gardner

A silicon carbide honeycomb body is made by shaping a plasticizable raw material batch mixture containing powdered silicon metal, a water soluble crosslinking thermoset resin, a powdered silicon-containing filler, a water soluble thermoplastic binder, and water into a green honeycomb body, and thereafter drying, curing and sintering the green body at a temperature sufficient to convert the green body to a porous silicon carbide sintered body.

Process for producing silicon carbide bodies

An electrode for deionization of water is made of a continuous activated carbon structure. The activated carbon is derived from a synthetic carbon precursor. The structure has openings, inlet and outlet ends such that water entering the inlet end passes through the openings and exits through the outlet end, a conductive coating on at least part of the outer surface of the structure, and a metal wire in contact with the structure. A deionization system is made up of the electrodes in series so that the outlet end of one electrode is next to the inlet end of the nearest downstream electrode. The metal wire of each electrode is connected to a power source to deliver the opposite charge as the charge delivered to its neighboring electrodes. Each of the electrodes is fixedly attached to and sealed within a housing with an air and moisture-tight seal. Openings in the housing between the electrodes, allow air to be removed before use. A method of removing ions from a stream of water involves removing air from the system by applying a vacuum to the housing openings and sealing the housing openings, passing a current through the device, and passing a stream of water containing ions through it to remove the ions.

Ion-removal from water using activated carbon electrodes

A battery construction and a method of producing the construction. The construction comprises a ceramic separator having a honeycomb structure in which cells run lengthwise of the honeycomb and are separated by porous walls, and internal positive and negative electrodes positioned in part at least within the honeycomb structure.

Method of making a honeycomb battery structure

Honeycomb battery structure

A tubular, rigid, porous, ceramic separator for a rechargeable, deep-discharge battery assembly, the separator having a porosity greater than 40%. A plurality of battery cells, each embodying such separators, are assembled with a common terminal to form the positive electrode in a motive traction battery.

Deep-discharge battery separator

A battery assembly comprising a separator, spaced metal/metal oxide electrodes and a liquid electrolyte, the improvement comprising a rigid, porous, ceramic separator that is wettable by the liquid electrolyte, that has a porosity of 40-90 volume %, an average pore size in the range of 0.1-25 microns, a thickness of 1-12 mm, and a weight loss of not more than about 5% when exposed to H.sub.2 SO.sub.4 having a specific gravity of 1.28 for 72 hours at 70.degree. C.

Method of preparing a battery separator

The invention relates to a process of eliminating high chloride-containing incinerator ash and incinerator ash-residue mixtures, without generating excessive heavy metal-containing effluents during the actual vitrification of the ash. The process involves first pretreating the incinerator ash or ash-residue mixture, if needed, whereby the resultant ash contains less than about 3% halogen by weight and less than about 3% C.. Following the pretreatment, the ash is dried and then mixed with any additives needed to make up a vitrifiable batch mixture which will, when subsequently vitrified, form a glass possessing an excellent acid durability. A durability whereby such that the weight loss of the glass in 5% HCl solution at 95.degree. C. is 2.0 mg/cm.sup.2 or less in 24 hours. This durability results in minimal or non-detectable leaching of hazardous heavy metal or non-metallic specie and is sufficient enough durability such that the vitrified glass will easily pass the EPA's test for leachability. A suitable glass meeting the requirements is comprised of, expressed in terms of weight percent, about 47-76% SiO.sub.2 ; 8-29% Al.sub.2 O.sub.3, 3.4-33.0% CaO; and optionally 0-25% R.sub.2 O, wherein R.sub.2 O is selected from the group consisting of Na.sub.2, Li.sub.2 O, and K.sub.2 O; 0-5% Fe.sub.2 O.sub.3 ; 0-18% B.sub.2 O.sub.3 ; 0-7% ZrO.sub.2 ; 0-7% TiO.sub.2 ; 0-10% MO, wherein MO is selected from the group consisting of MgO, BaO, ZnO or SrO; 0-8% of at least one member selected from the group consisting of PbO, CdO, Cr.sub.2 O.sub.3, CuO, and NiO; and 0-4% SO.sub.3 with 0-4% Cl+F as batched.

Process for vitrifying incinerator ash

This invention is directed to the production of spontaneous essentially non-crystalline opal glasses exhibiting a very dense, milky-white appearance and excellent resistance to weathering and attack by alkaline detergents consisting essentially, expressed in weight percent on the on the basis, of 1.9-3.6% K.sub.2 O, 4.2-7.3% Na.sub.2 O, 0.2-3% Li.sub.2 O, 0-1.2% MgO, 0-4.9% CaO, 0-12.5% BaO, 0-0.1% NiO, 0.4-4% ZnO, 5.3-9.6% B.sub.2 O.sub.3, 8.8-13.5% Al.sub.2 O.sub.3, 57.2-64.4% SiO.sub.2, and 1.0-2.2% F., where the sum of (MgO+CaO+BaO) is preferably in the range of 4.5-12.5%.

Phase-separated, non-crystalline opal glasses

An elongated, rigid, porous, ceramic separator for a rechargeable battery assembly, the separator having a honeycomb structure in which open cells are separated from adjacent cells by thin, porous, ceramic walls, the open cells and separating walls running lengthwise of the honeycomb, the cell walls being porous and the open cells and wall pores being adapted to be filled with an electrolyte to permit ion flow between electrodes in a battery.

Honeycomb battery separator

A battery assembly comprising a separator, spaced metal/metal oxide electrodes and a liquid electrolyte, the improvement comprising a rigid, porous, ceramic separator that is wettable by the liquid electrolyte, that has a porosity of 40-90 volume %, an average pore size in the range of 0.1-25 microns, a thickness of 1-12 mm, and a weight loss of not more than about 5% when exposed to H.sub.2 SO.sub.4 having a specific gravity of 1.28 for 72 hours at 70.degree.C.

Battery separator

Inorganic reinforcing fibers comprising hybrid BN--C protective coatings containing up to 12% by weight of hexagonal (graphitic) carbon dissolved in the BN matrix but being essentially free of undissolved pyrolytic and graphitic carbon secondary phases, and fiber-reinforced ceramic matrix composite products incorporating the protectively-coated fibers, are disclosed. The fibers resist oxidation and provide good bonding interface characteristics when disposed in ceramic encapsulating materials, such that the composite products exhibit excellent resistance to high temperature embrittlement.

B-N-C.sub.x hydrid coatings for inorganic fiber reinforcement materials

Novel oxide coatings which can be conveniently applied to reinforcing fibers such as silicon carbide fibers, and which when introduced as a fiber coating into fiber reinforced ceramic matrix composites provide composites exhibiting improved resistance to embrittlement at high temperatures, are described. Oxides effective to provide the improved composites in accordance with the invention include CeO.sub.2 and ZrO.sub.2.

Fiber reinforced ceramic matrix composites exhibiting improved

Inorganic reinforcing fibers provided with a multi-layer protective coating comprising a boron nitride sublayer and an oxide-based overcoating of alumina or synthetic mica, and fiber-reinforced ceramic matrix composite products incorporating the protectively-coated fibers, are disclosed. The fibers offer improved oxidation resistance and good compatibility with oxide-based glass and glass-ceramic composite matrix materials.

Coated inorganic fiber reinforcement materials and ceramic composites

Fiber-reinforced ceramic matrix composite products comprising boron-nitride-coated reinforcing silicon carbide fibers disposed in a substantially non-porous alkaline earth aluminosilicate glass-ceramic matrix are disclosed, the matrix comprising triclinic anorthite (CaO,SrO.Al.sub.2 O.sub.3.2SiO.sub.2) as the principal crystal phase and the products exhibiting unexpectedly good resistance to high-temperature degradation.

A fiber-reinforced ceramic matrix composite article comprising fiber-reinforced surface portions disposed on a ceramic core, the core differing in composition and high temperature properties from the surface portions and the fibers present in the surface portions being of a type normally subject to oxidative deterioration at high temperature, wherein the fibers in the surface portion are provided with protection from high temperature oxidative deterioration such that excellent strength and resistance to high temperature embrittlement are achieved for the composite as a whole.

Growing community of inventors

Beaver Dams, NY, United States of America

John L Stempin