摘要:
A method of joining silicon nitride based ceramic bodies is disclosed. At least one interfacing surface of shaped bodies (one or both of which may be hot-pressed or reaction-sintered) receives a layer of metallic aluminum based material. The bodies with the metallic aluminum based material therebetween are subjected to heating at 1400.degree.1900.degree. C. for a period typically 0.5-2 hours in a nitriding atmosphere to effect a chemical bond consisting of a conversion of the interfacing ceramic to a Si--Al--O--N system.
摘要:
Glass or ceramic-to-metal composites or seals wherein the glass or ceramic is bonded to an iron base alloy consisting essentially of from 1-5% silicon and from 1-10% chromium, remainder iron. The alloy develops a thermal oxide film which consists essentially of chromium oxide and .alpha.Fe.sub.2 O.sub.3 which may comprise from 10 to 100% of the oxide film thickness on the metal. The invention also includes a process of bonding the glass or ceramic to the metal which eliminates the need of a prolonged heat treatment performed in a special atmosphere.
摘要翻译:玻璃或陶瓷 - 金属复合材料或密封件,其中玻璃或陶瓷结合到基本上由1-5%的硅和1-10%的铬组成的铁基合金,剩余的是铁。 合金形成热氧化膜,其主要由氧化铬和αFe2 O 3组成,其可以包含金属上10至100%的氧化膜厚度。 本发明还包括将玻璃或陶瓷粘合到金属上的方法,其消除了在特殊气氛中进行的长时间热处理的需要。
摘要:
A method for producing a semi-finished metal product (2), in particular a semi-finished copper product, for a metal-copper substrate, in particular for a copper-ceramic substrate, including:
providing a first metal layer (11), in particular a first copper layer, and a second metal layer (12), in particular a second copper layer, joining the first metal layer (11) and the second metal layer (12) to form the semi-finished metal product (2), wherein, chronologically before the first metal layer (11) is joined to the second metal layer (12) by means of different temperature treatments, a grain growth in the first metal layer (11) and/or the second metal layer (12) is initiated in such a way that in the produced semi-finished metal product (2), in particular in the produced metal-copper substrate, a first grain size in the first metal layer (11) differs from a second grain size in the second metal layer (12).
摘要:
The invention relates to a method for connecting at least two components (1, 2), comprising the following steps: A) providing at least a first component (1) and a second component (2), B) applying at least one donor layer (3) to the first and/or the second component (1, 2), wherein the donor layer (3) is enriched with oxygen (31), C) applying a metal layer (4) to the donor layer (3), the first or the second component (1, 2), D) heating at least the metal layer (4) to a first temperature (T1) such that the metal layer (4) is melted and the first component (1) and the second component (2) are connected to one another, and E) heating the arrangement to a second temperature (T2) such that the oxygen (31) passes from the donor layer (3) into the metal layer (4) and the metal layer (4) is converted to form a stable metal oxide layer (5), wherein the metal oxide layer (5) has a higher melting temperature than the metal layer (4), wherein at least the donor layer (3) and the metal oxide layer (5) connect the first component (1) and the second component (2) to one another.
摘要:
In a method for solid body joining of a carrier body (10) and a cover layer (20), in particular by anodic bonding, the cover layer (20) is pressed with a pressing force against a curved carrier body surface (11), wherein the pressing force during the solid body joining is distributed by way of a pressure intermediary device (30) areally and simultaneously over the whole cover layer (20) and is directed perpendicularly to the curvature of the carrier body surface (11). A composite component comprising a carrier body (10) and a cover layer (20) is also disclosed, wherein a curved areal joining region (13) is formed between a cover layer surface (21) and a carrier body surface (11).
摘要:
A modular element having a high-temperature stable main body, including at least one metallic or ceramic plate, which has at least one through-going aperture for the insertion of a ceramic capillary membrane and at least one potting in the form of a sufficiently gas-tight and high-temperature stable joint between the metallic or ceramic plate and the ceramic capillary membrane. The through-going aperture of the metallic or ceramic plate having an extension for accommodating the sufficiently gas-tight and high-temperature stable joint on at least one side of the metallic or ceramic plate.
摘要:
A honeycomb structure includes at least one pillar-shaped honeycomb unit and a pair of electrodes. The pillar-shaped honeycomb unit includes an outer peripheral wall and cell walls. The cell walls extend along a longitudinal direction of the honeycomb unit to define cells. The cell walls are composed of a ceramic aggregate having pores. The cell walls contain a substance having an electrical resistivity lower than an electrical resistivity of ceramic forming the ceramic aggregate. The pair of electrodes is arranged at the cell walls and/or the outer peripheral wall.
摘要:
A method is disclosed for producing metal-ceramic substrates that are metallized on both sides by using the direct bonding process. According to the method, at least one DCB stack made from first and a second metal layer and a ceramic layer located between said metal layers is formed on a separating layer of a support by heating to a direct bonding temperature. At least one of the metal layers rests against the separating layer during the bonding process, said separating layer being composed of a porous layer or coating made of a separating layer material from the group comprising mullite, Al2O3, TiO3, ZrO2, MgO, CaO CaCO2 or a mixture of at least two of said materials.