A simple way to make tough diamond/metal laminates

摘要: Abstract Diamond foils are exceptionally strong yet brittle. One approach to make ceramic less susceptible brittle fracture is introduce interfaces into the material that provide pathways for crack deflection. In this study, we were able produce tough diamond/metal laminates (DMLs) from freestanding diamond using a brazing process. The mechanical behavior was characterized via three-point bending (3PB) where exhibit step-like fracture. Crack deflection at induces toughening within laminates. At approx. 3.0 MJ/m3 more than twice energy of monolithic while maintaining 90% stiffness and about 70% nominal strength. Classical laminate theory (CLT) supports assessment deformation We find diamond-to-metal interface plays critical role: it must be enough enable transfer shear stress, being weak deflect crack.