Non-molten wetting Al / Al2O3 brazing method
CN120734458APending Publication Date: 2025-10-03WENZHOU POLYTECHNIC
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Patent Information
- Application Number
- CN202510674054.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-23
- Publication Date
- 2025-10-03
AI Technical Summary
Technical Problem
Al可以直接润湿Al2O3陶瓷，但这一润湿温度高达850℃以上，而金属纯Al熔点仅为660℃，如何协调纯Al的低熔点和Al2O3/Al高润湿温度之间的矛盾是实现Al钎料钎焊Al2O3/Al的一个问题；同时，Al表面通常存在一层异常致密而稳定的氧化膜，采用Al作为钎料时，如何去除熔融Al液表面这层氧化膜，实现液态钎料和母材的直接接触是另一个问题
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Abstract
The invention discloses a non-molten wetting Al / Al2O3 brazing method. The non-molten wetting Al / Al2O3 brazing method comprises the following steps that S1, a 1060 aluminum metal sheet and an Al2O3 ceramic sheet are pretreated; s2, an ANELVASPC-350 multi-target magnetron sputtering device is used for carrying out film coating treatment; and S3, vacuum brazing of the 1060 aluminum metal sheet and the Al2O3 ceramic sheet is conducted, the problem that Al melt does not wet the ceramic at the brazing temperature is solved by sputtering and depositing A < l > and A < l-Cu > films on the surface of the Al2O3 ceramic sheet to serve as brazing filler metal, reaction-free transition layer direct brazing of the Al2O3 ceramic is achieved, the shear strength of a welding piece connector can reach 102.6 Mpa at the temperature of 640 DEG C, and the application range of the ceramic and metal connecting pieces is widened.
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