Manufacturing method of a cutting tool coated with al2o3, using the physical vapor deposition technique (pvd)

摘要

B "METHOD OF MANUFACTURING A CUTTING TOOL COATED WITH AL ~ 2 ~ O ~ 3 ~, THROUGH THE STEAM PHYSICAL DEPOSITION (PVD) TECHNIQUE" D. The present invention relates to a process for producing a coated cutting tool, consisting of a coating and a substrate, in which at least one refractory layer consisting of sym -Al ~ 2 ~ O ~ 3 ~ is deposited by means of reactive magnetron crackle on a mobile vacuum substrate, through pulsed magnetron crackle in a mixture of a noble gas and a reactive gas, at a pulse frequency set at 10 to 100 kHz. Deposition takes place at a speed of at least 1 nm / s with reference to a stationary substrate, with an energy density over an average target magnetron time set to at least 10 W / cm ^ 2 ^. The substrate temperature is in the range of 400 to 700 ° C and the flow of particles that hit each individual substrate is cyclically interrupted.