| 摘要 |
The invention relates to a composite material, comprising a hard metal or cermet substrate body, coated with at least one diamond layer. According to the invention, the adhesion of the diamond layer on fine-grained hard metal or cermet substrate bodies may be improved, whereby the C content of the hard metal or cermet substrate body lies between 89 % and 99 %, preferably between 94 % and 99 % of the maximum possible content at which C porosity occurs, or, for hard metal substrate bodies with Co binder, the magnetic saturation polarisation is 89 to 99 %, preferably 94 to 99 % of the maximum saturation polarisation 4 pi sigma max = 2 Co - 2,2 Cr3C2, (Co and Cr3C2 each given in mass % and 4 pi sigma max in mu T . m3 . kg-1). |
