Effect of processing conditions on bonding strength at Al(Si)/diamond interfacesMittwoch (26.06.2019) 11:53 - 11:56 Uhr
Bonding strength between inclusions like diamond particles and a metallic matrix in a composite cannot be directly measured and thermophysical behaviour of composites is just an indirect measure for the quality of composites and interfaces. We therefore aimed to shed some light on interfacial bonding strength by neutron diffraction experiments to compare with thermophysical properties of the composites. Neutron diffraction may reveal micro-strains between diamond particles and Al and Al3Si matrices, respectively, as a function of nominal matrix composition, processing and diamond surface conditions, as well as thermal conductivity and interfacial carbide Al4C3 formation. The experimental work was performed in the Stress-Spec setup of the high flux source FRM2 in Garching, Germany.