Aluminum silicon carbide tube shell electrical insulator and sintering method thereof

Abstract

The invention discloses an aluminum silicon carbide tube shell electrical insulator and a sintering method thereof. The sintering method comprises the following steps: an aluminum silicon carbide tubeshell is placed on a sintering mold, a glass powder hollow tube sleeves a corresponding hole position in the aluminum silicon carbide tube shell, a lead wire is inserted into the middle, then two ends of the hole are separated and filled with carbon powder, the mold is placed into a microwave sintering furnace together with the tube shell, microwave output power and time are adjusted, sintering is performed, and therefore welding of the aluminum silicon carbide tube shell, the electrical insulator and the lead wire is completed. According to the method provided by the invention, different temperature fields are provided by means of microwave selective heating, sintering of the glass electrical insulator of the aluminum silicon carbide tube shell is realized, and the problem that aluminumsilicon carbide is not resistant to heat in a conventional sintering process is solved.

Description

technical field [0001] The invention belongs to the technical field of aluminum silicon carbide shell welding, and in particular relates to an aluminum silicon carbide shell insulator and a sintering method thereof. Background technique [0002] Due to its unique material properties, aluminum silicon carbide is widely used in the field of electronic packaging, and is the material of choice in harsh environments such as aerospace. The aluminum silicon carbide shell with high volume fraction has good thermal conductivity, small type variable and high reliability. It belongs to the high-end product of microwave and hybrid circuit shells. However, the aluminum silicon carbide shell itself has great shortcomings, and it is difficult to make insulator welding. [0003] At present, most of the insulators on the market are glass or ceramics, and their sintering temperature is generally 800°C-1200°C. During the sintering process, most of the insulators need to be heated as a whole u...

AI Technical Summary

Problems solved by technology

The aluminum silicon carbide shell with high volume fraction has good thermal conductivity, small type variable and high reliability. It belongs to the high-end product of microwave and hybrid circuit shells. However, the aluminum silicon carbide shell itself has great shortcomings, and it is difficult to make insulator welding

[0003] At present, most of the insulators on the market are glass or ceramics, and their sintering temperature is generally 800°C-1200°C. During the sintering process, most of the insulators need to be heated as a whole under vacuum or protective atmosphere, and the time is relatively long. However, this process It is not suitable for the sintering of the insulator of the aluminum silicon carbide shell, because the continuous heating of the aluminum silicon carbide material at such a high temperature will produce a series of unknown changes, and the material itself is not resistant to high temperature

Images