| Patent application number | Description | Published |
|---|
| 20080196449 | Refractory ceramic composite and method of making - A zircon composition having a multi-modal particle size distribution is disclosed. The multi-modal zircon composition comprises greater than about 40 parts by weight of a coarse zircon component having a median particle size of from greater than about 3 μm to about 25 μm, and less than about 60 parts by weight of a fine zircon component having a median particle size of 3 μm or less. Methods for manufacturing a green body and a fired refractory ceramic body comprising the multi-modal zircon composition are also disclosed. | 08-21-2008 |
| 20080277835 | Reduced strain refractory ceramic composite and method of making - A composition is disclosed comprising a fine zircon component having a median particle size of less than 5 μm, a medium zircon component having a median particle size of from 5 μm to 15 μm, and a sintering aid, wherein the composition, after firing, has a strain rate of less than about 1×10 | 11-13-2008 |
| 20090220733 | Dispersion-toughened cordierite for filter and substrate applications - A porous ceramic substrate includes a first phase of microcracked cordierite ceramic material and a second phase of non-cordierite metal oxide particles dispersed in the cordierite ceramic, wherein at least a portion of the interface between the first and second phases is wetted by glass and the particles of the second phase have a size in the range of from about 0.1 to about 10 μm. A method for toughening a porous microcracked cordierite ceramic includes the steps of providing a cordierite batch composition; adding to the cordierite batch composition at least one non-cordierite forming metal oxide or metal oxide precursor; mixing the batch composition with a pore former, binder, and water into a paste; shaping the paste into a green body; firing the green body; and annealing the fired green body at a temperature below the firing temperature to form a toughened cordierite ceramic honeycomb having a second phase of crystallized non-cordierite particles dispersed within the cordierite ceramic, wherein at least a portion of the interface between the first and second phases is wetted by glass. | 09-03-2009 |
| 20090220734 | Anisotropic Porous Ceramic Article And Manufacture Thereof - An aluminum titanate-based ceramic is provided having an anisotropic microstructure which includes the reaction products of a plurality of ceramic-forming precursors. The batch contains at least one precursor in fibrous form. The inorganic ceramic has low thermal expansion. Porous ceramic bodies and the method of manufacture are also provided. | 09-03-2009 |
| 20090272482 | MATERIAL AND METHOD FOR BONDING ZIRCON BLOCKS - A process for making large zircon blocks by bonding multiple zircon components, and bonding materials for use in such process. The invention enables the manufacture of large zircon blocks without the need of larger-size isopressing equipment. The invention is particularly useful in making large-size isopipes for use in a fusion down-draw process in making glass sheets for use in, e.g., LCD production. | 11-05-2009 |
| 20090298667 | Controlled Gas Pore Formers in Extruded Ware - The present invention provides compositions and methods for producing porous ceramic articles. The compositions and methods comprise a ceramic precursor batch comprising an organic peroxide pore forming agent where the pore forming agent is an organo-adduct of hydrogen peroxide and an organic compound or an organic peroxide of the general formula R—O—O—R′. The organic peroxide pore forming agent is stable during extrusion and other methods for forming a green body and does not decompose until the green body is dried. | 12-03-2009 |
| 20100125034 | REDUCED STRAIN REFRACTORY CERAMIC COMPOSITE AND METHOD OF MAKING - A composition is disclosed comprising a fine zircon component having a median particle size of less than 5 μm, a medium zircon component having a median particle size of from 5 μm to 15 μm, and a sintering aid, wherein the composition, after firing, has a strain rate of less than about 1×10 | 05-20-2010 |
| 20100248934 | REDUCED STRAIN REFRACTORY CERAMIC COMPOSITE AND METHOD OF MAKING - A composition is disclosed comprising a fine zircon component having a median particle size of less than 5 μm, a medium zircon component having a median particle size of from 5 μm to 15 μm, and a sintering aid, wherein the composition, after firing, has a strain rate of less than about 1×10 | 09-30-2010 |
| 20100329975 | Cordierite-Forming Compositions With Hydratable Alumina And Methods Therefor - A cordierite batch composition that includes a hydratable alumina, as defined herein. The hydratable alumina, when hydrated, can provide additional strength to shaped batch compositions at temperatures below those used to fire the compositions. Methods are also provided for forming cordierite ceramic articles from the cordierite batch compositions. | 12-30-2010 |
| 20110130276 | Reticular Cordierite Composition, Article And Manufacture Thereof - A porous ceramic material is disclosed having a principal cordierite phase, the porous ceramic material exhibiting a normalized strength greater than 20 MPa. The cordierite phase has a reticular microstructure. A method for forming a porous ceramic body having a predominant phase of cordierite is provided which includes forming a body from a plasticized mixture of inorganic ceramic-forming ingredients that include a magnesia source, a silica source, and an alumina source, the alumina source including alumina-containing elongated particles, wherein at least 90 wt % of the alumina-containing elongated particles have a length of 50 to 150 μm, and then firing the body. | 06-02-2011 |
