Loading in 2 Seconds...
Loading in 2 Seconds...
The development of brazing technology for SiC/SiCf composites for the fusion reactor applications. Collaboration: ENEA Frascati, Italy Max Planck Institute of Microstructure Physics, Halle, Germany. Preparation of eutectic alloys:
The development of brazing technology for SiC/SiCf composites for the fusion reactor applications
Collaboration: ENEA Frascati, Italy
Max Planck Institute of Microstructure Physics, Halle, Germany
The Si-Ti and Si-Cr eutectic alloys were prepared in an Ar plasma furnace
The as obtained alloys were remelted several times in an high preasure e-beam to obtained a fine eutectic microstructure
Microstructure of eutectic alloys
Light regions represent the Si2Ti intermetalic cmpound while the dark regions represent pure Si
SEM micrograph of the Si-Ti eutectic alloy
Manufacture of the SiC/SiCf junctions
The junctions were heated at a rate of 10 0C/min at 20 0C above the eutectic
temperature, kept at this temperature for 5 min and than cooled down to
room temperature at a rate of 20 0C/min
SEM cross section of the junction
brazed with Si-Ti alloy
High magnification cross section
High resolution microscopy of the junction cross-section
Nanochemistry of the junctions
Behaviour at shearing test
B.Riccardi, C.A.Nannetti, J.Woltersdorf, E.Pippel, T.Petrisor. “High temperature brazing for SiC and
SiCf/SiC Ceramic Matrix Composites”. Advanced SiC/SiC Ceramic Composites: development and
Applications in Energy Systems, A.Kohyama, M.Singh, H-T.Lin and Y.Katoh eds,
Ceramic Transactions Vol 144, The American Ceramic Society, Westerville (OH), 2002, pp 311-322.
B.Riccardi, C.A.Nannetti, J.Woltersdorf, E.Pippel, T.Petrisor.”Brazing of SiC and SiCf/SiC composites performed with 84Si-16Ti eutectic alloy:microstructure and strength”. Journal of Material Science 37 (2002) 5029-5039.
B.Riccardi, C.A.Nannetti ,T.Petrisor, J.Woltersdorf, E.Pippel S.Libera L.Pilloni, “Issues of Low Activation
Brazing of SiCf/SiC Composites by Using Alloys Without Free Silicon”
Journal of Nuclear Materials, 329-33, 562-566 Part A AUG 1, 2004.
B.Riccardi, C.A.Nannetti, J.Woltersdorf, E.Pippel, T.Petrisor, ”Joining of SiC based ceramics and composites with Si-16Ti and Si-18Cr eutectic alloys”. International Journal of Materials and Product Technology 20 (5-6): 440-451, 2004.
B. Riccardi, C. A. Nanneti. T. Petrisor, M. Sacheti, A. Orsini, Italian Patent AN: RM2001A000101 (2001).