Coated cutting tool insert

Details Coated cutting tool insert Coated cutting tool insert

2009-01-29

2010-10-26

Turner, Archene (Department: 1784)

Stock material or miscellaneous articles

Composite

Of inorganic material

C051S307000, C051S309000, C428S697000, C428S698000, C428S702000, C428S216000, C428S336000

Reexamination Certificate

active

07820310

ABSTRACT:
A method for making a coated cutting tool insert by depositing by CVD, onto a cemented carbide, titanium based or ceramic substrate a hard layer system, having a total thickness of from about 2 to about 50 μm, comprising at least one layer selected from titanium carbide, titanium nitride, titanium carbonitride, titanium carboxide and aluminum oxide, and an outer, from about 1 to about 15 μm thick, aluminum oxide layer or (Al2O3+ZrO2)*N multilayer, a penultimate outermost layer of TiOx, where x ranges from about 1 to about 2, and an outermost, from about 0.3 to about 2 μm thick, TiCxNyOz, layer, where x+y+z=1, x≧0, y≧0, and z≧0, followed by a post-treatment removing at least said outermost layer on the edge-line and on the rake face.

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Sahin, Y., “The Effects of Various Multilayer Ceramic Coatings on the Wear of Carbide Cutting Tools When Machining Metal Matrix Composites”,Surface and Coatings Technology, vol. 199, Issue 1, Sep. 1, 2005, pp. 112-117.

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