Joining of β-SiC by spark plasma sintering

0435413 - ÚFM 2015 RIV NL eng J - Journal Article
Grasso, S. - Tatarko, Peter - Rizzo, S. - Porwal, H. - Hu, Ch. - Katoh, Y. - Salvo, M. - Reece, M. J. - Ferraris, M.
Joining of β-SiC by spark plasma sintering.
Journal of the European Ceramic Society. Roč. 34, č. 7 (2014), s. 1681-1686. ISSN 0955-2219. E-ISSN 1873-619X
EU Projects: European Commission(XE) 264526 - GLACERCO
Institutional support: RVO:68081723
Keywords : β-SiC * joining * Spark plasma sintering
Subject RIV: JH - Ceramics, Fire-Resistant Materials and Glass
Impact factor: 2.947, year: 2014

Spark plasma sintering (SPS) was employed to join monolithic β-SiC with or without titanium as intermediate joining material. Both the localized and rapid heating contributed to the inherent energy saving of electric current assisted joining technique. The effects of uniaxial pressure and surface preparation were analyzed independently with respect to the flexural strength and the morphology of the joints. In particular samples polished down to 1 μm and joined at 1900 °C for 5 min achieved the strength of the as received material. The failure occurred outside the joining interface, confirming the optimum quality of the joint. Pressure in combination with surface preparation was necessary to achieve perfect adhesion and pore free direct joining of SiC. The use of Ti foil as a joining material and pressure allowed joining of unpolished SiC.
Permanent Link: http://hdl.handle.net/11104/0239441