539.9 C respectively. Counter-plots of the temperature on the
quarter piston are similar to each other, but the temperature values
are different. As expected, the maximum amount of increase in the
temperature of the piston’s crown top surface is observed for
1.6 mm thick coating, because of the low ceramic thermal conductivity
with respect to the aluminum alloy. It is obvious that the
temperature of the piston top surface increases with coating
thickness.