High temperature rapid reactive joining of dissimilar materials: Silicon carbide to an aluminum alloy

作者：Lin Ya Cheng; McGinn Paul J; Mukasyan Alexander S^*

来源：Journal of the European Ceramic Society, 2012, 32(14): 3809-3818.

DOI：10.1016/j.jeurceramsoc.2012.05.002

• Joining
• Powders-chemical preparation
• Pressing
• SiC
• Armour

An effective method for bonding of silicon carbide (SiC) ceramic to 5083 Aluminum metal-alloys was developed. This method employed the concept of high-temperature rapid heterogeneous combustion reaction to joint dissimilar materials. Scaled-up welding apparatus, which can accommodate specimens of up to 5 '' in diameter and 6 '' in height and allow a rapid (similar to 10 ms) load application (up to 1000 MPa) on the joining stack during reaction, was designed and built. An exothermic mixture of titanium and carbon powders (molar ratio 1:0.4) was utilized as a joining reactive layer. Uniform crack-free bonding of SiC to 5083 Al-alloy was accomplished both without and with application of loads. SEM and focused ion beam (FIB) images revealed that 10 mu m (without load) and similar to 500 nm (with load) transitional joining layers along the interfaces were observed, respectively. Compositional and mechanical properties of joined samples were also characterized by EDS analysis and Vickers microhardness investigations.

• 出版日期2012-11