The structure of micro-region along the interfacial section between Cu-Ti alloy and graphite (or diamond) has been analyzed by using SEM-EDS and SEMWDS as well as in-depth metallography and X-ray diffraction. It was revealed that the wetting and bonding behaviour on diamond surface by Cu-Ti melt is realized through the stable TiC film which is produced by interaction between Ti atoms of Cu-Ti alloy and C atoms of graphite (or diamond) surface at elevated temperatures.
