Carbide Tool Titanium Oxide Layers (1)

Carbide tool with titanium oxide layer is deliberately attempted to diffuse a titanium oxide layer into a carbide tool by applying a paste of titanium oxide over the surface of the tool and heating the tool to an elevated temperature to thereby diffuse the titanium oxide into the surface.

With regard to the above described oxide layers, though they are identifiable, the stability of these layers under the shear stresses encountered during normal cutting operations was not considered until recently. Thus, it is conceivable that the oxide layer may not be able to withstand the high shearing stresses encountered in metal cutting for a prolonged period of time and that the rate of oxide formation at the metal to metal contact may not be rapid enough to provide a continuous oxide layer. It was then considered possible that what really effected the metal cutting property was not necessarily the oxide layer alone, but the substrate layer of the carbide effected by mass diffusion of the oxide layer into the carbide tool.


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