The temperature at the surface of the coated region is significantly higher than that of
the uncoated piston surface. Increase in the maximum temperature
at the crown center, compared with the uncoated piston, is 32.7%,
55.8%, 72.5% and 84.8% for 0.4 mm, 0.8 mm, 1.2 mm and 1.6 mm
thick coating, respectively