Diamond window sealing device and fabrication method thereof

Abstract

The invention provides a diamond window sealing device and a fabrication method thereof. The diamond window sealing device comprises a diamond membrane, a first metal layer, a Cu layer or an Al layerand a knife edge, wherein the first metal layer is deposited at an edge of the diamond membrane, the Cu layer or the Al layer is arranged on the first metal layer, and the knife edge is used for pressing the two metal layers and performing packing with main equipment. Compared with the prior art, a layer of metal Cu or Al is electroplated after surface metallization of diamond, a condition is created for sealing, so that a complicated welding process can be substituted by a simple knife edge sealing method; and by the diamond window sealing device provided by the invention, a diamond window standard device can be fabricated in mass production, the process is simple and practical, moreover, the diamond window sealing device is very convenient to repair or replace, and the application difficulty of the diamond window device is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of diamond processing and packaging, in particular to a new diamond window sealing device and a preparation method thereof. Background technique [0002] With the development of military infrared technology, the requirements for the environmental tolerance of infrared optical components are getting higher and higher, especially the front windows in military infrared imaging systems are often used in harsh environments such as high temperature, high humidity, and atmospheric friction. environment (such as tanks, airborne windows, etc.), so the requirements for infrared film materials are very strict. [0003] Diamond film has ultra-high hardness and wear resistance, stable chemical properties, and can also withstand various strong acids and alkalis and chemical solvents, and diamond has good permeability in almost the entire infrared region, with a high refractive index. The most preferred material for optic...

AI Technical Summary

Problems solved by technology

[0004] Diamond film, as an infrared optical window device, must be packaged with the main device, but diamond itself has extremely high hardness and excellent chemical inertness, which makes it difficult to process the diamond film, and it is difficult to form a good seal or package with the main device

[0005] Existing diamond window sealing method mainly adopts the method of welding, but the method of welding all has some deficiencies: 1) welding process temperature is high, easily causes the carbonization of diamond, and between diamond and solder and equipment material or diamond surface metal and solder and The thermal expansion absorption difference between the equipment is obvious, which may easily cause cracking of the sealing material; 2) The welding process is difficult to rework

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