Research progress of ceramic/metal dissimilar brazing technology

Abstract:

As one of the widely used methods of material joiningSin manufacturing industry, brazing is widely used in the fields of medical treatment, power electronics and automobile, etc. Among many joining methods, the brazing is the most effective and promising way of the joining of ceramic/metal dissimilar materials. In this paper, the investigations on the joining of ceramic/metal dissimilar materials in recent 20 years are reviewed in detail. Firstly, the research statusSof ceramic/metal brazing joint is summarized. Secondly, the research progress of ceramic/metal dissimilar brazing joint is reviewed in detail from four kinds of ceramic materials, including oxide ceramics, carbide ceramics, nitride ceramics and ceramic matrix composites, as well as five kinds of brazing methods including active metal brazing, air reaction brazing, contact reaction brazing, glass brazing and ultrasonic assisted brazing. And then the applications of the ceramic/metal dissimilar brazing joint in medical treatment, power electronics and automobile are introduced. At last, the limitations in the research and development of ceramic/metal dissimilar brazing technology are pointed out, and then the developmentStendency of ceramic/metal dissimilar brazing technology is expected. This aim of this paper is to provide the theoretical basis and technical support for the investigations of ceramic/metal dissimilar brazing technology based on the summary of relevant researches.

Key words:brazing; ceramic/metal dissimilar joining; AgCuTi brazing alloy; residual stress; wetting properties.