Dissimilar laser brazing of single crystal diamond and tungsten carbide

摘要

The conclusive remarks of this study are summarized as follows. 1. At the interface of single crystal diamond / Ag-Cu-Ti braze, a concentration of Ti and C was observed. It was presumed that the reacted phase existed at the interface between single crystal diamond and braze. 2. No large voids or cracks in the braze area existed from non-destructive observation of the interface using scanning acoustic microscopy. 3. Fracture occurred at single crystal diamond side of each specimen after a shear strength test. This suggests that the shear strength indicates the bulk strength of single crystal diamond and this brazing joint has strength enough to connect single crystal diamond and WC-Co.