| 摘要 |
<p>A cutting tool insert includes a body of a hard alloy of cemented carbide, cermet, ceramics, cubic boron nitride based material or high speed steel and a hard and wear resistant coating, including one or several layers, at least one of which is an (Al,Cr)2O3 layer. The coating, with a total thickness of 2-20 μm includes one or several layers, at least one of which is an (Al,Cr)2O3 layer with a thickness of 1-5 μm having a corundum phase crystalline structure and a composition (Al1-yCry)2O3 with 0.5≦̸y≦̸0.7. The (Al,Cr)2O3 layer has a fiber texture with rotational symmetry in the direction of the coated surface normal with an inclination angle, &phgr;, of the basal planes relative to the coated surface normal or the inclination angle, &phgr;, for the highest peak in the pole plot with 20°<&phgr;<55°.</p> |
