Abstract:
A method of producing a relatively- thick film of a magnetic material on a substrate for use in microwave and millimeter wave devices is disclosed. The method includes preparing a wet paste comprising a binder material, glass frit, and a finely-grained magnetic material; applying the wet paste over a stencil, template or mask disposed on the substrate, to form a film on a surface of the substrate; drying the wet paste within an applied magnetic field, to vaporize fluid and organic compounds in the binder material and to produce a desired magnetic orientation in the magnetic film; and sintering the magnetic film. Hot pressing the magnetic film during sintering by adding weight on the film improves density.
Abstract:
The sintered ceramic product comprises a granular material bound by a nitrogenous mold. According to the invention, at least one anti-dust agent selected among calcium and boron exists in a surface layer of the product, the mass ratio of all the anti-dust agents in the surface layer being greater than that measured underneath this layer. This product advantageously has a reduced ratio of non-adherent particles to its surface.
Abstract:
A method for printing a data-carrying mark on a portion of an unfinished ceramic structure, such as the green body of a ceramic honeycomb structure, is disclosed that is capable of producing a mark that maintains legibility even after being fired to temperatures above 1100 o C or higher, or even 1300 o C or higher. The data-carrying mark is formed from a deposit of colorant solids overlying a portion of the unfinished ceramic structure. The volume of colorant solids per unit area of marked wall portion that is at least twice as much as that required to obtain maximum pre-fired visual contrast between marked and unmarked portions of the structure (i.e., prior to firing). The colorant solids may include one or more of cobalt, nickel, iron, chromium, copper, manganese and titanium, either in metallic or oxide form, and are preferably deposited in particulate form via a high temperature ink composition that prints the data-carrying mark by way of an ink jet print head. The data-carrying mark may be a digital pattern of marked and unmarked wall portions such as a bar code.
Abstract translation:公开了一种用于在未完成的陶瓷结构的一部分(例如陶瓷蜂窝结构的生坯)上印刷数据承载标记的方法,该方法能够产生即使在烧制至1100℃以上的温度之后仍保持易读性的标记, SUP> o SUP> C或更高,甚至1300 o SUP> C或更高。 数据承载标记由覆盖未完成的陶瓷结构的一部分的着色剂固体沉积物形成。 标记壁部分的每单位面积着色剂固体的体积至少是在结构的标记部分和未标记部分之间(即在烧制之前)获得最大的预焙烧视觉对比所需的量的两倍。 着色剂固体可以包括金属或氧化物形式的钴,镍,铁,铬,铜,锰和钛中的一种或多种,并且优选通过高温油墨组合物以颗粒形式沉积,所述高温油墨组合物印刷数据携带标记 通过喷墨打印头。 数据携带标记可以是标记和未标记的壁部分(例如条形码)的数字图案。
Abstract:
An aluminum-boron-carbon (ABC) ceramic-metal composite bonded to a metal or metal-ceramic composite other than ABC composite is made by forming a porous body comprised of particulates being comprised of a boron-carbon compound that has a particulate layer of titanium diboride powder on the surface of the porous body. The porous body is infiltrated with aluminum or alloy thereof resulting in the simultaneous infiltration of the TiB 2 layer, where the layer has an aluminum metal content that is at least about 10 percentage points greater by volume than the (ABC) composite. The ABC composite is then fused to a metal or metal-ceramic body through the infiltrated layer of titanium diboride, wherein the metal-ceramic body is a composite other than an aluminum-boron-carbon composite.
Abstract:
Components and methods of forming a protective coating system on the components are provided. The component includes a ceramic substrate and a braze layer disposed over the ceramic substrate. The braze layer includes a silicon matrix having a first constituent and a second constituent that is different than the first constituent. The first constituent forms a first intermetallic with a portion of the silicon matrix and the second constituent forms a second intermetallic with another portion of the silicon matrix, wherein the braze layer is formulated to provide a barrier to oxygen diffusion therethrough.
Abstract:
A method is provided for producing insulation materials and insulation for high temperature applications using novel castable and powder-based ceramics. The ceramic components produced using the proposed process offers (i) a fine porosity (from nano-to micro scale); (ii) a superior strength-to-weight ratio; and (iii) flexibility in designing multilayered features offering multifunctionality which will increase the service lifetime of insulation and refractory components used in the solid oxide fuel cell, direct carbon fuel cell, furnace, metal melting, glass, chemical, paper/pulp, automobile, industrial heating, coal, and power generation industries. Further, the ceramic components made using this method may have net-shape and/or net-size advantages with minimum post machining requirements.
Abstract:
Thick film conductive copper pastes that are lead-free and cadmium-free. The inventive copper pastes possess desirable characteristics, including good solderability, good wire bondability, a low firing temperature, and a wide temperature processing window, and provide excellent adhesion to a variety of substrates, including alumina and glass coated stainless steel substrates, as well as low resistivity, and a microstructure after firing that is dense and substantially free of pores.
Abstract:
The invention concerns a firing support for ceramics consisting of a carbon substrate at least partly coated with a silicon carbide coating, said coating further adhering to said substrate. The invention also concerns a method for obtaining such a support.
Abstract:
Die Erfindung betrifft ein Verdampferschiffchen aus einem elektrisch leitfähigen keramischen Trägermaterial für die Bedampfung von Substraten mit Metallen, dadurch gekennzeichnet, dass auf der Oberfläche des Verdampferschiffchens, von der die Verdampfung der Metalle erfolgt, eine der folgenden Beschichtungen vorgesehen ist: a) eine Beschichtung mindestens eines Borids eines Übergangsmetalls der 4. bis 6. Nebengruppe des Periodensystems, b) eine Beschichtung aus einer Mischung des zu verdampfenden Metalls und mindestens einem Übergangsmetall der 4. bis 6. Nebengruppe des Periodensystems und/oder deren Boriden, c) eine erste Beschichtung aus mindestens einem Übergangsmetall der 4. bis 6. Nebengruppe des Periodensystems und/oder deren Boriden und eine darauf aufgebrachte Beschichtung aus dem zu verdampfenden Metall. Die erfindungsgemäßen Verdampferschiffchen zeigen eine gute Erstbenetzung für die zu verdampfenden Metalle, so dass die Verdampfung spritzerarm und gleichmäßig durchgeführt werden kann.