摘要:
A thermal and environmental barrier coating composed of ceramic hollow microspheres sintered together. In one embodiment the microspheres are sintered together with a powder of another material that acts as a binder, or with a powder of a material that may be the same as the material of the hollow microspheres, forming a matrix in which the hollow microspheres are embedded. The hollow microspheres may be composed of a material with a high temperature capability, and with a low coefficient of thermal expansion.
摘要:
The present application relates to a protective and abradable coating composition for application on rolls and more particularly to conveyor rolls comprising an abradable coating for use in high temperature applications, to a process for making such rolls and to the use thereof. Corrosion by aluminium melt is reduced and build-up substances are removed by friction. The life time of the roll is then increased.
摘要:
Die Erfindung betrifft einen Werkstoffverbund aus einem Keramiksubstrat mit einer Funktionsbeschichtung, wobei die optische Funktionsbeschichtung mindestens eine Funktionsschicht umfasst und der Brechungsindex der optischen Funktionsbeschichtung mit dem Brechungsindex des Keramiksubstrats in einem Verhältnis von 1,5:1 bis 1:1,5 steht.
摘要:
La présente invention concerne un creuset utile pour la solidification d'un lingot de silicium à partir de silicium fondu,caractérisé en ce qu'il est revêtu au moins partiellement sur sa surface interne d'une couche externe se présentant sous la forme d'un empilement de strates, chaque strate possédant une épaisseur variant de 5 à 150 µm, et étant formée d'un matériau obtenu par décomposition thermique de polysilazane(s) et/ou de polysiloxane(s) et dans lequel sont intégrées des particules inorganiques dont la taille varie de 50 nm à 200 µm. Elle vise en outre un procédé de préparation de tels creusets.
摘要:
The present invention discloses a method for-producing a smooth surface on a rough substrate. The rough substrate is coated with a film or particles of spin-on-glass (SOG) dissolved in a solvent using spin coating, spray coating or dip coating. The SOG is made to reflow by using thermal melting and solvent thinning, where the reflow is done in an atmosphere containing a partial pressure of the solvent. The reflow allows the SOG to partially melt and to decrease the surface roughnesss of the film. The SOG is cured by thermal curing or UV exposure radiation curing into a hard durable and chemical inert silicon dioxide film (SiOj). The spin-on-glass can for example be hydrogen silsesquioxane (HSQ) or methyl silsesquioxane (MSQ) dissolved in either methyl isobutyl ketone (MIBK) or volatile methyl siloxanes (VMS). The method can optionally include the steps of embossing, chemical mechanical polishing (CMP), etching and functionalising the surface. The substrate can be a cast, mould or form for producing a polymer or a glass replica.
摘要:
Skins and/or adhesive layers are formed on a porous ceramic honeycomb by applying a layer of a cement composition to a surface of the honeycomb and firing the cement composition. The cement composition contains inorganic filler particles, a carrier fluid and a clay material rather than the colloidal alumina and/or silica materials that are conventionally used in such cements. The cement compositions resist permeation into the porous walls of the ceramic honeycomb. As a result, lower temperature gradients are seen in the honeycomb structure during rapid temperature changes, which results in an increased thermal shock resistance.
摘要:
Die vorliegende Erfindung betrifft eine Keramikfliese (1) aus einem Feinsteinzeugscherben (2), dessen Oberfläche (3) wenigstens teilweise mit einer Dekorschicht (4) versehen ist, und der eine die Dekorschicht (4) und die Oberfläche (3) abdeckende transparente Schutzschicht (5) aufweist. Dabei ist die transparente Schutzschicht (5) in einem Nasslackverfahren unter Verwendung eines organischen Beschichtungswerkstoffs aufgebracht und die Oberfläche (3) des Feinsteinzeugscherbens (2) ist unglasiert. Die Erfindung betrifft weiterhin ein Verfahren zur Herstellung einer solchen Keramikfliese (1).
摘要:
Fragrance slow-release layer comprising porous silica matrix (2A) and hollow silica shells (2B) covalently linked to the porous silica matrix (2A), also respective production process comprising coating with a sol-gel formulation and firing, wherein said formulation comprises silicium alkoxide, water soluble polymer, hollow silica shells, a basic catalyst. Also, a fragrance slow-release ceramic tile comprising said layer, composed of a ceramic body (1A) and a glaze layer (1 B), covalently linked with the fragrance slow-release layer. The fragrance slow-release layer comprises adsorbed fragrance and therefore, is useful for delivering perfumes or scents.
摘要:
This invention relates to a method of Silicon Carbide scanning mirror production whereby a Silicon Carbide scanning mirror is manufactured to provide a surface that will become the face surface of said scanning mirror that is then coated with a suitably thick layer of Silicon material deposited by high velocity Oxygen fuel thermal spray process or HVOF onto said face surface of said scanning mirror that is then polished to achieve the desired surface quality and/or roughness and/or flatness and then optical coated using coating technologies and materials to coat said face surface that will then become the reflective surface with suitable high reflective optical coatings specific to the wavelength or wavelengths that the finished Silicon Carbide scanning mirrors will be used to reflect in final application/s.