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Joining @ Institute of Materials Physics and EngineeringDepartment of Applied Science and Technology - Institute of Materials Physics and Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy, http://www.composites.polito.it
Solid oxide Fuel Cells
Nuclear industry
High temperature and aerospace industries
Shear tests
State of the art: Four-point asymmetrical
bending test
• ASTM C 1469-00(2005)
Pros
• It is the only standard available to test the shear strength of joined ceramics and ceramic composites
Cons
• Notches are needed if the joint strength is high
• Shear stress (within the middle of the joint) is not uniform.
• Positioning of loading pins is difficult
Automotive industry et al.
Biomedical and building industries
Crofer22APU/Glass-
ceramic sealant/Yttria
stabilisedzirconia (YSZ)
Sealants
Self-healing sealant
Sealants
Test simulating
SOFCconditions
Test
Test station for SOFC stacks @ DENERG*
Test
Current EC projects & collaborations
• GlaCERCo – Glass and Ceramic Composites for High Technology Applications (FP7-PEOPLE-2010-ITN, POLITO coordinator), start date: 1st February 2011.
• ADMACOM - Advanced manufacturing routes for metal/Composite components for aerospace, (FoF.NMP.2013-10; POLITO coordinator), start date: 1st October 2013
• JOLIE - JOining of LIghtweight alloys to advanced FGM mEtal-ceramic materials (Matera 2010, POLITO coordinator), start date: 1st May 2013
* Department of Energy- Politecnico di Torino - Italy
**Nanoforce Ltd, UK
Joint design
• Reliability of
mechanical joints
have been coupled
with sealant properties
of suitable joining
materials, to obtain
mechanical & sealant
joints for CMCs.
Info and contact person
Milena Salvo, Department of Applied Science and Technology -
Institute of Materials Physics and Engineering - Politecnico di Torino - Italy
www.composites.polito.it
Radiation resistant joining
material: CaO-Al2O3 glass-
ceramic
SiC
Radiation resistant joining
material: SiO2-Al2O3-Y2O3
glass-ceramic
SiC/SiC
Direct bonding of SiC based materials by
Spark Plasma Sintering (SPS)**
Direct bonding
Joining of C/C to copper alloys for
ITER
C/C-Cu
SiC/SiC joined by Ti by SPS**
C/SiC
Ultra stable joints of C/C
for high performance
space instruments
C/C
Lightweight alternative to
aluminium sandwich
panel
CFRP
Joining for inflatable
structures: polymer/polymer and polymer/Al
alloys
Polymers
Joining of ceramic
reinforced MMC to Al alloy for the breaking
system
MMC
Brazing - low cost
Functionally Graded
Material (FGM) approach
CMC
Brazing of intermetallicsto Ni-Cr alloys
to obtain a FGM
FGM
Joining of GlidCop to Mo
for the Compact
Linear Collider (CLIC, CERN)
Glidcop
Thermal Assisted Direct
Bonding (TADB) for
glass based lab-on-chip
Glass
Micro-fluidic device
produced by TADB of two
glasses
Glass
Joining of bioactive
trabecular-like coatings for prosthetic
applications
Macroporous
Joining of Foamglas®,
insulation material
Foam glass
Type ‘2’
Type ‘3’
Torsion test set-up designed
and built at POLITO in coll.
ORNL (USA) and Kyoto
Univ. (Jap) to measure pure
shear strength of joined
components