Patent ID: 6555241
Filing Date: 2003-04-29
Classification: C23C

Abstract:
An aluminum casting, comprising:a machined internal cylindrical casting surface having a core roughness of approximately 0.5 micrometers to approximately 3.0 micrometers, a reduced peak height of approximately 0.1 micrometers to approximately 2.0 micrometers, and a reduced groove depth of approximately 0.5 micrometers to approximately 5.0 micrometers; and a vapor deposited wear resistant coating on said casting surface, said coating having a core roughness of approximately 0.5 micrometers to approximately 2.8 micrometers, a reduced peak height of approximately 0.1 micrometers to approximately 1.8 micrometers, and a reduced groove depth of approximately 0.5 micrometers to approximately 4.8 micrometers.