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公开(公告)号：BR0110263A
公开(公告)日：2003-03-05
申请号：BR0110263
申请日：2001-05-10
Applicant: CORNING INC
Inventor： BEALL DOUGLAS MUNROE , MERKEL GREGORY ALBERT , HICKMAN DAVID LEE
Abstract: A ceramic comprising predominately a cordierite-type phase approximating the stoichiometry Mg 2 Al 4 Si 5 O 18 and having a coefficient of thermal expansion (25-800° C.) of greater than 4x10 -7 /° C. and less than 13x10 -7 /° C. and a permeability and a pore size distribution which satisfy the relation 2.108 (permeability)+18.511 (total pore volume)+0.1863 (percentage of total pore volume comprised of pores between 4 and 40 micrometers)>24.6. The ceramic is suitable in the fabrication of cellular, wall-flow, diesel particulate filters having a pressure drop in kPa that at an artificial carbon soot loading of 5 grams/liter and a flow rate of 26 scfm is less than 8.9-0.035 (number of cells per square inch)+300 (cell wall thickness in inches), a bulk filter density of at least 0.60 g/cm 3 and a volumetric heat capacity of at least 0.67 J cm -3 K -1 as measured at 500° C.
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公开(公告)号：BR0011456A
公开(公告)日：2002-03-19
申请号：BR0011456
申请日：2000-06-08
Applicant: CORNING INC
Abstract: A sintered ceramic that exhibits an average linear coefficient of thermal expansion (25-800° C.) below about 5.0x10 ° C. , a total porosity between the range of 20% to about 30%. Furthermore, the sintered ceramic article exhibits a pore size distribution such that at least about 86% of pores are of a pore size of less than about 2 mum. Lastly, the ceramic article exhibits an interconnected pore structure with the pores exhibiting a generally elongated shape, i.e., the pores are predominately oriented with their long axis in the plane of the webs. This invention also relates to a method for producing a sintered cordierite ceramic article involving first compounding and plasticizing a cordierite-forming inorganic powder batch comprising a platy talc having median particle of size less than about 2 mum, and preferably a talc morphology index greater than about 0.75. The batch further comprises at least 4% by weight of the inorganic powder batch mixture of a dispersible Al2O3-forming source having a specific surface area in excess of 50 m /g and one or more of the components of kaolin, calcined kaolin, silica, and corundum, each having a median particle sizes less than 5 mum. The plasticized powder batch thus provided is next formed into a green honeycomb by extrusion through a honeycomb extrusion die and the green honeycomb is fired to a temperature and for a time sufficient to convert the green honeycomb into a crystallized cordierite ceramic article having the aforementioned properties.
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3.发明专利
公开(公告)号：PL2925685T3
公开(公告)日：2018-10-31
申请号：PL13808375
申请日：2013-11-27
Applicant: CORNING INC
Inventor： BEALL DOUGLAS MUNROE , TANNER CAMERON WAYNE
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公开(公告)号：DE69110654T2
公开(公告)日：1995-12-14
申请号：DE69110654
申请日：1991-11-12
Applicant: CORNING INC
Inventor： BEALL DOUGLAS MUNROE , DELISO EVELYN MCGEE , MURTAGH MARTIN JOSEPH
IPC: B01J21/14 , C04B35/195 , C04B35/18 , C01B33/26 , C04B38/00
Abstract: A body is disclosed which is at least about 90% by weight cordierite, and has a coefficient of thermal expansion of less than about 16 x 10 / DEG C from about 25 DEG C to about 1000 DEG C. Also disclosed is a method of fabricating the body. Raw materials are selected to form a nominal composition consisting essentially of in percent by weight about 11.5 to about 16.5 MgO, about 33.0 to about 41.0 Al2O3, and about 46.5 to about 53 SiO2. The raw materials can be a combination of silica and magnesium aluminate spinel, a combination of silica, magnesium aluminate spinel, and a MgO yielding component, or a combination of silica, magnesium aluminate spinel, and a Al2O3 yielding component. The raw materials are provided absent of clay and talc. The raw materials are blended with an effective amount of vehicle and forming aids to impart plastic formability and green strength thereto form a plastic. The raw materials are formed into a green body which is dried and fired at a sufficient temperature for a sufficient time to form the cordierite body.
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公开(公告)号：DE69106866T2
公开(公告)日：1995-08-31
申请号：DE69106866
申请日：1991-11-12
Applicant: CORNING INC
Abstract: A body is disclosed which is at least about 90% by weight cordierite, has a mean pore size of less than about 10.0 microns, and a coefficient of thermal expansion of no greater than about 9.0 x 10 / DEG C from about 25 DEG C to 1000 DEG C. Also disclosed is a method of fabricating the body. Raw materials are selected to form a composition consisting essentially of in percent by weight about 12 to 16 magnesium oxide, about 35 to 41 aluminum oxide, and about 43 to 53 silica. The raw materials are absent of clay and talc. The magnesium oxide is supplied by a magnesium oxide component having an average particle size of no greater than about 15.0 micrometers in diameter. The aluminum oxide is supplied by an aluminum oxide component having an average particle size of no greater than about 8.0 micrometers in diameter. The composition is capable of forming cordierite in the subsequent firing step. The raw materials are blended with an effective amount of vehicle and forming aids to impart plastic formability and green strength thereto and form a plastic mixture. The raw materials are formed into a green body which is dried and fired. The firing is done by heating to a first temperature of about 1000 DEG C to 1200 DEG C and thereafter raising the temperature at a rate of less than about 100 DEG C per hour to a second temperature sufficient to form cordierite, and maintaining the second temperature for a sufficient time to form the cordierite body.
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Patent Agency Ranking
公开(公告)号：PL3026034T3
公开(公告)日：2019-10-31
申请号：PL16150088
申请日：2011-11-30
Applicant: CORNING INC
Inventor： BEALL DOUGLAS MUNROE , MERKEL GREGORY ALBERT , MURTAGH MARTIN JOSEPH
IPC: C04B35/195 , B28B11/24 , C03B19/06 , C04B35/636 , C04B35/638 , C04B38/00
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公开(公告)号：BR0114285A
公开(公告)日：2003-07-29
申请号：BR0114285
申请日：2001-09-19
Applicant: CORNING INC
Inventor： BEALL DOUGLAS MUNROE , BEALL GEORGE H
Abstract: A ceramic article which consists essentially, by weight on the oxide basis, of 10-25% SiO2, 65-85% Al2O3, and 2-12% Li2O and comprises beta-eucryptite as a first phase having a negative component in thermal expansion and a melting point Tm1, and a second phase having a positive component in thermal expansion which is higher than the component in thermal expansion of the first phase and a melting point Tm2, wherein Tm2>Tm1, wherein the first phase is at most 50% by weight of the ceramic, and wherein the ceramic is characterized by microcracking. Tm2 is at least 1800° C. The ceramic article exhibits a near zero coefficient of thermal expansion from room temperature to 800° C., a high refractoriness, and a high resistance to thermal shock properties which make the inventive ceramic extremely desirable in high temperature applications, such as filters for diesel exhaust engines.
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公开(公告)号：MX9200152A
公开(公告)日：1992-08-01
申请号：MX9200152
申请日：1992-01-14
Applicant: CORNING INC
Inventor： BEALL DOUGLAS MUNROE , DELISO EVELYN MCGEE , MURTAGH MARTIN JOSEPH
IPC: B01J21/14 , C04B35/195 , C04B33/02
Abstract: A body is disclosed which is at least about 90% by weight cordierite, and has a coefficient of thermal expansion of less than about 16 x 10 / DEG C from about 25 DEG C to about 1000 DEG C. Also disclosed is a method of fabricating the body. Raw materials are selected to form a nominal composition consisting essentially of in percent by weight about 11.5 to about 16.5 MgO, about 33.0 to about 41.0 Al2O3, and about 46.5 to about 53 SiO2. The raw materials can be a combination of silica and magnesium aluminate spinel, a combination of silica, magnesium aluminate spinel, and a MgO yielding component, or a combination of silica, magnesium aluminate spinel, and a Al2O3 yielding component. The raw materials are provided absent of clay and talc. The raw materials are blended with an effective amount of vehicle and forming aids to impart plastic formability and green strength thereto form a plastic. The raw materials are formed into a green body which is dried and fired at a sufficient temperature for a sufficient time to form the cordierite body.
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公开(公告)号：PL2964587T3
公开(公告)日：2019-12-31
申请号：PL14710764
申请日：2014-03-04
Applicant: CORNING INC
Inventor： BEALL DOUGLAS MUNROE , BRONFENBRENNER DAVID JACK , FABER MARGARET KATHLEEN , IYER SRIRAM RANGARAJAN , TEPESCH PATRICK DAVID , WING DOUGLAS RICHARD
IPC: C04B35/195 , C04B38/00
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公开(公告)号：DE69106866D1
公开(公告)日：1995-03-02
申请号：DE69106866
申请日：1991-11-12
Applicant: CORNING INC
Abstract: A body is disclosed which is at least about 90% by weight cordierite, has a mean pore size of less than about 10.0 microns, and a coefficient of thermal expansion of no greater than about 9.0 x 10 / DEG C from about 25 DEG C to 1000 DEG C. Also disclosed is a method of fabricating the body. Raw materials are selected to form a composition consisting essentially of in percent by weight about 12 to 16 magnesium oxide, about 35 to 41 aluminum oxide, and about 43 to 53 silica. The raw materials are absent of clay and talc. The magnesium oxide is supplied by a magnesium oxide component having an average particle size of no greater than about 15.0 micrometers in diameter. The aluminum oxide is supplied by an aluminum oxide component having an average particle size of no greater than about 8.0 micrometers in diameter. The composition is capable of forming cordierite in the subsequent firing step. The raw materials are blended with an effective amount of vehicle and forming aids to impart plastic formability and green strength thereto and form a plastic mixture. The raw materials are formed into a green body which is dried and fired. The firing is done by heating to a first temperature of about 1000 DEG C to 1200 DEG C and thereafter raising the temperature at a rate of less than about 100 DEG C per hour to a second temperature sufficient to form cordierite, and maintaining the second temperature for a sufficient time to form the cordierite body.
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