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    3.
    发明专利
    未知

    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

    Inventor： BEALL DOUGLAS MUNROE ,  DELISO EVELYN MCGEE ,  GUILE DONALD LLOYD ,  MURTAGH MARTIN JOSEPH

    IPC: B01J21/16 ,  B01J21/14 ,  C04B35/195 ,  C04B38/00 ,  C04B35/18 ,  C01B33/26

    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.

    5.
    发明专利
    未知

    公开(公告)号：DE69201434T2

    公开(公告)日：1995-09-14

    申请号：DE69201434

    申请日：1992-11-11

    Applicant: CORNING INC

    Inventor： GUILE DONALD LLOYD

    IPC: B01D46/00 ,  B01D46/24 ,  C04B35/00 ,  C04B35/195 ,  C04B35/636 ,  C04B38/00 ,  F01N3/02 ,  F02B3/06 ,  C04B35/18 ,  B01D39/20

    Abstract: A method of making porous ceramic articles is disclosed that allows the formed green body to be dried in a dielectric oven without arcing or shorting occurring while maintaining favorable physical properties. The method includes adding water insoluble cellulose and graphite to the ceramic-forming precursors as a burnout material. The method of the present invention is particularly useful in forming porous cordierite articles that are extruded to form a honeycomb structure conventionally used as a particulate filter for the exhaust fluids of diesel engines. Such articles have a matrix of thin walls forming a multiplicity of open-ended cells extending from one end to another end of the honeycomb. The thin walls have a substantially smaller coefficient of thermal expansion in the direction parallel to the axes of the open-ended cells than in the direction transverse to the thin walls.

    8.
    发明专利
    未知

    公开(公告)号：BR8904466A

    公开(公告)日：1990-04-17

    申请号：BR8904466

    申请日：1989-09-05

    Applicant: CORNING INC

    Inventor： GUILE DONALD LLOYD ,  MARTIN DANDY

    IPC: C04B35/10 ,  B32B18/00 ,  C04B35/44 ,  C04B38/00 ,  C04B35/00

    Abstract: Novel calcium dialuminate/hexaluminate ceramic structures in the form of blends, laminates and composites, and processes for making these structures are disclosed. The ceramics of the invention exhibit relatively lower levels of thermal expansion, high strengths, and good thermal shock resistance over wide temperature ranges.

    9.
    发明专利
    未知

    公开(公告)号：DE69329694T2

    公开(公告)日：2001-03-15

    申请号：DE69329694

    申请日：1993-12-15

    Applicant: CORNING INC

    Inventor： GHEORGHIU TUDOR CONSTANTIN ,  HILLMAN ARTHUR EDWARD ,  GUILE DONALD LLOYD ,  LIPP GEORGE DANIEL ,  ZOOK LARRY JAY

    IPC: C04B33/30 ,  F26B3/34 ,  F26B21/00 ,  F26B3/347

    Abstract: The method involves rotating structures about their longitudinal axis between a pair of parallel dielectric electrodes and simultaneously blowing heated air through the longitudinal cells of the honeycomb structure. Preferably the dielectric electrodes are oriented parallel with the longitudinal axis of the honeycomb structure. The rotation between the electrodes results in a more uniform energy transfer to the honeycomb structure by levelling out the non-uniformities and variations in the dielectric field.

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