Identification of parameters involved in the bonding of copper tracks on alumina substrates by a laser process

A laser process was used to produce copper tracks on alumina substrates. Many parameters involved made it tricky. In order to determinate the most influent factors among laser beam diameter, laser power, scanning velocity, preheating temperature of the substrate, scanning overlap and copper grains size, a Plackett and Burman’s design of experiments has been used. With a very limited number of experiments, this method allowed to obtain first encouraging results.