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Component with ceramic bodies bonded to each other, pressure sensor thereof, and manufacturing method

A ceramic body and component technology, which is applied in measuring fluid pressure, measuring fluid pressure through electromagnetic components, manufacturing tools, etc., can solve the problem that the solder mask is no longer reliable

Active Publication Date: 2018-02-02
EHNDRESS KHAUZER GMBKH KO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the brazing temperature increases, the solder mask is no longer reliable and the solder flows over the edge of the tantalum electrode into the pressure chamber

Method used

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  • Component with ceramic bodies bonded to each other, pressure sensor thereof, and manufacturing method
  • Component with ceramic bodies bonded to each other, pressure sensor thereof, and manufacturing method
  • Component with ceramic bodies bonded to each other, pressure sensor thereof, and manufacturing method

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Embodiment Construction

[0036] As in figure 1 As shown in the composition C, an alloy composed of two metals or a mixture of two alloys A and B e There is a eutectic point, that is, an intersection with a eutectic valley. In the composition C e Near to form C M0 Has, and C e In comparison, the slightly increased amount of component B is compared with component C e In comparison, it has only a slightly increased liquidus temperature. The further enrichment of component B leads to a significant increase in liquidus temperature, such as for component C E Indicated.

[0037] Starting from these considerations, the components of the pressure measurement unit will be joined. The arrangement of the components before joining is provided in figure 2 in. The pressure measurement unit includes a ceramic platform 1 and a measurement membrane 2, both of which contain alumina. The measuring membrane 2 and the platform will be joined with active brazing material or brazing material. In order to keep the active br...

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PUM

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Abstract

The invention relates to an assembly comprising: a first ceramic body and a second ceramic body (1, 2) joined by a seam of an active brazing or brazing compound (5), wherein the active brazing or brazing The material (5) is divided equally over a continuous main volume, said main volume comprising at least 50% of said seam volume, having a mean composition CM having a liquidus temperature Tl(CM). Wherein, according to the invention, the edge region of the seam has an average composition CE with a liquidus temperature Tl(CE), the edge region of the seam contacts at least one of the ceramic bodies (1, 2), The liquidus temperature Tl(CE) is at least 20K, preferably at least 50K and particularly preferably at least 100K higher than the liquidus temperature Tl(CM) of the mean composition CM of the main volume.

Description

Technical field [0001] The present invention relates to a component having at least two ceramic bodies joined to each other, particularly a pressure measuring unit, and a method for joining the ceramic bodies using active brazing material or brazing material. Background technique [0002] Due to the special relevance of the present invention to the pressure measurement unit, the present invention will be explained based on the pressure measurement unit first. [0003] The pressure measurement unit according to the cutting-edge technology combines a ceramic measuring membrane and a ceramic platform, where the measuring membrane and the platform are tightly connected along the peripheral joint containing active brazing material or brazing material, and the pressure chamber is formed between the measuring membrane and the platform , Where the equilibrium position of the measuring membrane is produced by the difference between the pressure prevailing in the pressure chamber and the pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/00B23K1/19C04B37/00G01L9/00
CPCB23K1/0008B23K1/19C04B37/006G01L9/0044G01L9/0075C04B2237/55C04B2237/343C04B2237/126C04B2237/122C04B2237/708C04B2237/72C04B2237/597B23K1/0016C04B2237/12G01L9/0072
Inventor 尼尔斯·波纳特安德烈亚斯·罗斯贝格埃尔克·施密特
Owner EHNDRESS KHAUZER GMBKH KO KG