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Method for brazing ceramic and metal or ceramic and ceramic
The present invention provides a method for brazing a ceramic and a metal or a ceramic and a ceramic, and relates to a methods for brazing a ceramic and a metal, a ceramic and a ceramic, a ceramic and a ceramic-based composite, and a ceramic-based composite and a ceramic-based composite. The method comprises: making periodic or aperiodic open slots on a to-be-brazed surface of a ceramic or a ceramic-based composite, wherein the distance between adjacent open slots, the width of each open slot, and the depth of each open slot are of order of micrometers; and then placing an active brazer between to-be-brazed surfaces, and achieving effective connections between the ceramic and a metal, between the ceramic and a ceramic, or between the ceramic and a ceramic-based composite by using a vacuum brazing method. The method provided by the present invention can effectively increase a wetting area of the active brazer on the surface, and reduce residual stress of ceramic surface, thereby improving bonding strength between the ceramic and the metal and between the ceramic and the ceramic. The method is also applicable to connection between C/C composites, Cf/Sic composites and other materials of high hardness and high brittleness.
Method for brazing ceramic and metal or ceramic and ceramic
The present invention provides a method for brazing a ceramic and a metal or a ceramic and a ceramic, and relates to a methods for brazing a ceramic and a metal, a ceramic and a ceramic, a ceramic and a ceramic-based composite, and a ceramic-based composite and a ceramic-based composite. The method comprises: making periodic or aperiodic open slots on a to-be-brazed surface of a ceramic or a ceramic-based composite, wherein the distance between adjacent open slots, the width of each open slot, and the depth of each open slot are of order of micrometers; and then placing an active brazer between to-be-brazed surfaces, and achieving effective connections between the ceramic and a metal, between the ceramic and a ceramic, or between the ceramic and a ceramic-based composite by using a vacuum brazing method. The method provided by the present invention can effectively increase a wetting area of the active brazer on the surface, and reduce residual stress of ceramic surface, thereby improving bonding strength between the ceramic and the metal and between the ceramic and the ceramic. The method is also applicable to connection between C/C composites, Cf/Sic composites and other materials of high hardness and high brittleness.
Method for brazing ceramic and metal or ceramic and ceramic
LIU LEI (author) / ZHANG YINGCHUAN (author) / ZOU GUISHENG (author) / WU AIPING (author)
2015-11-11
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
Ceramic/metal brazing structure and ceramic metallization method
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