Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5440417 | Journal of the European Ceramic Society | 2017 | 8 Pages |
Abstract
Flash joining of CVD-SiC coated Cf/SiC samples with a Ti interlayer was achieved using a Spark Plasma Sintering machine. The influence of different heating powers and discharge times were investigated. The sample flash joined at a maximum heating power of 2.2 kW (peak electric current of 370 A) within 7 s showed the highest apparent shear strength of 31.4 MPa, which corresponds to the interlaminar shear strength of the composites. A maximum joining temperature of â¼1237 °C was reached during the flash joining. An extremely rapid heating rate of 9600 °C/min combined with a very short processing time hindered any reaction between the CVD-SiC coating and the Ti interlayer. The formation of a metallic joint (Ti based) in the absence of any detectable reaction phase is proposed as a new joining mechanism. For a conventionally joined SPS sample, the formation of titanium silicide phases inhibited the formation of a bond.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Peter Tatarko, Salvatore Grasso, Theo G. Saunders, Valentina Casalegno, Monica Ferraris, Michael J. Reece,