| abstract |
(57) [Abstract] [PROBLEMS] To provide an article having a wear-resistant composite ceramic coating thereon and a method for producing such an article. A cemented carbide or ceramic substrate is a doped two-phase metal oxide containing a fully dense adherent continuous metal oxide phase and a fully dense adherent discontinuous metal oxide phase. Having a wear resistant composite ceramic coating that includes a layer. The continuous metal oxide phase comprises aluminum oxide, yttrium oxide, or zirconium oxide, and the discontinuous metal oxide phase comprises a dispersed second discrete phase of aluminum oxide, yttrium oxide, or zirconium oxide, The continuous metal oxide phase differs from the discontinuous metal oxide phase in the metal oxide. The continuous metal oxide phase and / or the discontinuous metal oxide phase contains a dopant. |