To engance the adhesion of tool's diamond-coating by pulsed UV laser pretreatment

In this paper, tool's diamond coating are fabricated on tungsten carbide by pulsed UV laser surface pretreatment. The adhesion of diamond coatings under different laser pretreatment conditions are evaluated using indentation test. The optimum laser pretreatment conditions is obtained. Diamond coating tools are actually tested by machining of SiC-Al composite materials. The adhesion of diamond coating to tungsten carbide was greatly improved by the pulsed-UV-laser substrate pretreatment.