Transition metal nitride coated file

Details Transition metal nitride coated file Transition metal nitride coated file

B - Operations, Transporting

23

D

B23D 71/04 (2006.01) B23D 73/00 (2006.01)

Patent

CA 2572029

A hand operated file is provided with a thin ceramic coating of a transition metal nitride, such as vanadium nitride and/or zirconium nitride, on its teeth. The coating may be 20 µm or less, thereby not altering the macro dimensions of the file. The coating may be applied using a vapor deposition process such as physical vapor deposition, and advantageously via a physical vapor deposition process where the file body does not exceed a temperature of about 300°F. The coating helps prevent galling, thereby increasing the useful life of the file.

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