Diamond coated body and method of its production
AssigneeSandvik AB
InventorsIngrid Reineck, Maria Nordin
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Abstract
There is now provided a body coated with at least one diamond layer on a substrate of cemented carbide or cermets. The substrate is before the diamond coating process provided with spotwise occurring particles containing an element either being any of W, Ta, Ti, Mo Cr, V, Nb, Mg, Ca, Na, K or, preferably, any of B, Si, S, Al or P. These particles are dispersed at a density giving an average distance between two particles of 20 .mu.m or less, preferably 5 .mu.m or less.
Claims7
A body of cemented carbide or cermets coated with at least one diamond layer in which between said body and diamond layer are particles containing at least one element taken from the group consisting of B, Si, S, Al, P and mixtures thereof, said particles being dispersed at an average distance between two particles of 10 .mu.m or less the particles being a combination of small particles less than 0.5 .mu.m and large particles of 10-15 .mu.m with at least 25% of each of the small and large particles being present.
Dependencies are inferred from the claim text.