Calorising
Galvanizing
Sealing
Electroplating
Oil painting
Vamish
Ceramic coatings
Zinc chromate primer
Cracks below the surface
Yield strength
Ultimate tensile strength
Hardness
Ultrasonic testing is done in materials to determine cracks below the surface.
Stellite
Ceramics
Cemented Carbide
Cubic Boron Nitride
top rake angle increases
top rake angle decreases
top rake angle does not change
Top rake angle becomes negative