C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
204/96.07
C23C 14/34 (2006.01) B26B 21/60 (2006.01) C23C 14/22 (2006.01)
Patent
CA 1313509
ABSTRACT Formation of hard coating on cutting edges A method of making a cutting edge, which comprises coating a substrate cutting edge having a defined cross- sectional geometry, with a material which is harder than the material of the substrate cutting edge by a vapour deposition or sputtering process, if necessary in the presence of gaseous or vaporised molecules of another element or a compound of another element where it is desired to form the coating of a compound, at a pressure of less than 10-2m bar, while simultaneously subjecting the cutting edge to ion bombardment with ions of sufficient mass and energy to cause sputter removal of the deposited material at a rate which is less than the rate of deposition, whereby a cutting edge formed of the deposited material and having a defined cross- sectional geometry and ultimate tip radius, is obtained.
527642
Bache Roger John
Clipstone Colin John
Parker Colin Francis
Pumfrey Joan
Borden Ladner Gervais Llp
The Gillette Company
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