Abstract:
Multiphase ceramic materials for use in multilayered device fabrication may be fabricated by providing novel glassy precursor materials of a preferred composition, with operable amounts of non-glassy filler materials. The combined materials are fired at appropriate temperatures, so that a non-glassy anorthite type phase is formed. Material so fabricated is formed in a self-limiting process, in that reaction between the glassy precursor material and the non-glassy filler material is terminated when one constituent of the glassy precursor material is fully consumed. The materials of the instant invention, fabricated according to the method disclosed herein, demonstrate excellent dielectric constant, and electrical loss characteristics.
Abstract:
The current technology is directed to red and red-shade violet pigments with an hexagonal ABO 3 structure of the form Y(In, M)O 3 in which M is substituted for In in the trigonal bipyramidal B site of the ABO 3 structure, and where M is a mixture containing Co 2+ and charge compensating ions, or M is a mixture containing Co 2+ and charge compensating ions, as well as other aliovalent and isovalent ions.
Abstract:
Pre-fabricated, custom pre-designed, high-density engineered solid surface products, including countertops and other architectural surfaces such as vertical wall surfaces and decorative panels and a method of manufacture of unitary custom-fit interior and exterior engineered solid surface products that are stain resistant, moisture impervious, UV resistant, acid resistant, dimensionally stable, abrasion and impact resistant, and are glazed to produce unique decorative and utilitarian surfaces in a wide range of colors and textures, including artistic, one-of-a-kind works. The glaze surface includes exterior vertical edges on countertops and back-splashes that are continuous with the top surface color and design. Optional flaming (open flame treatment or "flame painting") or texturing of the post-glazed surface produces in a wide range of finishes, including a leather-look finish for crazed glazes. The invention includes custom-glazed monolithic engineered solid surface products that do not require site cutting, as a result of the inventive process.
Abstract:
The present invention relates to glaze compositions for treating ceramics, a method of glazing ceramic articles and glazed ceramic, articles obtained by this method, said glaze compositions comprising: Frits from 12 to 48% by weight; Mullites from 5 to 15% by weight; Magnesium Aluminate from 5 to 15% by weight; Zirconium Silico Aluminate from 5 to 15% by weight; Silicas from 5 to 20% by weight, and Feldspars from 5 to 20% by weight, and optionally Inorganic Colorants from 2 to 8% by weight, wherein said Frits consist of Alkalis, Amphoterics and Acids melted together and wherein the Alkalis : Amphoterics : Acids ratio is 1 : 0.383 - 1.596 : 2.605 - 0.603; the Alkalis : Amphoterics : Acids ratio of said glaze compositions is 1 : 0.5223 - 0.5508 : 2.9374 - 2.7339; said Inorganic Colorants, having the purpose of giving the desired colour to the glazes, are chosen from among Zirconium Silicates (for different shades of white glazes), Iron Chrome Cobalt Spinels (grey scale and blacks), Zirconium Silica Praseodymium (yellow scale), Zirconium Silica Iron (pink scale), Zirconium Silica Vanadium (blue scale), Iron Chrome Manganese Spinels (brown scale) and their mixtures (full colour range); these glaze compositions being designed to grant to the glazed ceramic articles elevated anti-scratch, anti-stain, anti-abrasion and anti-slip properties.
Abstract:
Die vorliegende Erfindung befasst sich mit der Entwicklung von kohlenstoffhaltigen oder kohlenstoffgebundenen Feuerfesterzeugnissen mit einem Hybridglasursystem aus einer Selbstglasur und einer Außenglasur, welches eine dauerhafte Oxydationsschutzschicht an der Oberfläche bereitstellt und die im Falle einer Beschädigung der Glasur an der Oberfläche zur einer Selbstheilung der Außenglasur führt. Darüber hinaus führt das Hybridglasursystem zu einer Versiegelung der offenen Porosität an der Oberfläche und im Inneren des kohlenstoffhaltigen bzw. kohlenstoffgebundenen Erzeugnisses. Im Falle eines Tauchausgusses wird damit keine Luft während des Gießvorgangs eingesaugt. Clogging-Phänomene im Sinne von Anhaftungen von Oxiden im Inneren des Tauchausgusses werden unterdrückt. Erfindungsgemäß werden hierzu gepresste oder gegossene kohlenstoffhaltige bzw. kohlenstoffgebundene Feuerfesterzeugnisse auf Oxidbasis mit mindestens 5 Gew.-% eines feuerfesten Oxides vorgesehen, die aus einem Gemisch von kohlenstoffhaltigen Bindemitteln, zusätzlichen Kohlenstoffträgern mit einem hohen Kohlenstoffgehalt und weiteren Oxiden und/oder Nicht-Oxiden bestehen und mit einer vor Oxydation schützenden Oberflächenglasur versehen sind, gekennzeichnet dadurch, dass in den Pressmassen zusätzlich 1 bis 20 Gew.-% feingepulverte Metalle oder Legierungen auf Siliziumbasis, 1 bis 10 Gew.-% feingemahlene Flussmittel und 1 bis 20 Gew.-% feines Siliziumdioxid enthalten sind und zusätzlich nach dem Verkoken eine Außenglasur aufgetragen wird.
Abstract:
A conductive silver via paste comprising particulate conductive silver, a lead-tellurium-lithium-titanium-oxide, titanium resinate and an organic vehicle is particularly useful in providing the metallization of the holes in the silicon wafers of MWT solar cells. The result is a metallic electrically conductive via between the collector lines on the front side and the emitter electrode on the back-side of the solar cell. The paste can also be used to form the collector lines on the front-side of the solar cell and the emitter electrode on the back-side of the solar cell. Also disclosed are metal-wrap-through silicon solar cells comprising the fired conductive silver paste.
Abstract:
The present invention discloses coating compositions comprising : I) at least one highly absorbing material selected from the group consisting of ruthenium, iridium and osmium compounds, and mixtures thereof; II) an inorganic glass binder or a precursor thereof; III) a ceramic filler comprising metal oxides, metal powders and mixtures thereof; and V) a liquid organic vehicle. The invention further discloses methods for preparing these coatings and uses thereof in solar applications.