Archivio Istituzionale della RicercaA critical issue for a wider use of Ceramic Matrix Composites (CMC) is the development of cheap, user-friendly joining methods to assemble large components into more complex structures, but also to repair damaged parts after mission. Some pressure-less joining techniques and joining materials for CMC will be described: results obtained by using glass ceramics, modification of a commercial adhesive and W/SiC based joining materials will be discussed. Different kinds of joined samples have been manufactured to couple the reliability of a machined joint with bonding properties of the joining materials. The mechanical characterization of the joints will be also discussed. The use of glass-ceramics as joining materials in a neutron environment has been demonstrated up to 820°C, 5 dpa: comparison of bending and shear strength for neutron irradiated and non-irradiated glass-ceramic joined SiC and SiC/SiC indicates that the mechanical strength is unaffected by irradiation at the used irradiation conditions.
PRESSURE-LESS JOINING OF CERAMIC MATRIX COMPOSITES / Salvo, Milena; Casalegno, Valentina; Rizzo, Stefano; Ventrella, Andrea; S., Novak; K., Handrick; Ferraris, Monica. - ELETTRONICO. - unico:(2012), pp. 1-8. (Intervento presentato al convegno 15th European Conference on Composite Materials tenutosi a Venice nel 24-28 June 2012).
PRESSURE-LESS JOINING OF CERAMIC MATRIX COMPOSITES
SALVO, Milena;CASALEGNO, VALENTINA;RIZZO, STEFANO;VENTRELLA, ANDREA;FERRARIS, Monica
2012
Abstract
A critical issue for a wider use of Ceramic Matrix Composites (CMC) is the development of cheap, user-friendly joining methods to assemble large components into more complex structures, but also to repair damaged parts after mission. Some pressure-less joining techniques and joining materials for CMC will be described: results obtained by using glass ceramics, modification of a commercial adhesive and W/SiC based joining materials will be discussed. Different kinds of joined samples have been manufactured to couple the reliability of a machined joint with bonding properties of the joining materials. The mechanical characterization of the joints will be also discussed. The use of glass-ceramics as joining materials in a neutron environment has been demonstrated up to 820°C, 5 dpa: comparison of bending and shear strength for neutron irradiated and non-irradiated glass-ceramic joined SiC and SiC/SiC indicates that the mechanical strength is unaffected by irradiation at the used irradiation conditions.
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https://hdl.handle.net/11583/2499242
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