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    • 7. 发明公开
    • Oxide coated cutting insert
    • Schneideinsatz mitOxidüberzug
    • EP2141257A2
    • 2010-01-06
    • EP09003007.3
    • 2009-03-03
    • Seco Tools AB
    • Larsson, TommyJohansson, Mats
    • C23C14/08C23C14/32B23B27/14
    • C23C14/325B23B27/14B23B2222/80B23B2224/04B23B2228/10B23B2228/105B23B2270/54B23C2228/04B23C2228/08C22C2204/00C23C14/081C23C14/083Y10T407/27Y10T409/303752Y10T428/265
    • The present invention relates to a cutting tool insert comprising a body of a hard alloy of cemented carbide, cermet, ceramics, cubic boron nitride based material or high speed steel a hard and wear resistant coating, comprising one or several layers, at least one of which an (Al,Cr) 2 O 3 layer is applied. This invention is particularly useful for machining of steel and stainless steel. The coating, with a total thickness of 1 - 20 µm comprises one or several layers, at least one of which is an (Al,Cr) 2 O 3 layer with a thickness of 0.5 - 10 µm having a corundum phase crystalline structure and a composition (Al 1-y Cr y ) 2 O 3 with 0.5≤y≤0.7. The (Al,Cr) 2 O 3 layer is further characterized having a fiber texture with rotational symmetry in the direction of the coated surface normal with an inclination angle, ϕ, of the basal planes relative to the coated surface normal or the inclination angle, ϕ, for the highest peak in the pole plot with 0°
    • 本发明涉及一种切削工具刀片,其包括由硬质合金,金属陶瓷,立方氮化硼基材料或高速钢,硬质和耐磨涂层组成的硬质合金体,包括一层或多层,至少一层 其中施加(Al,Cr)2 O 3层。 本发明特别适用于钢和不锈钢的加工。 总厚度为1-20μm的涂层包括一层或几层,其中至少一层是具有刚玉相结晶结构的厚度为0.5-10μm的(Al,Cr)2 O 3层,和 组成(Al 1-y Cr y)2 O 3,0.5‰‰‰0.7。 (Al,Cr)2 O 3层的特征还在于具有在涂覆表面方向上具有旋转对称性的纤维织构,其基底相对于涂覆表面法线或倾斜角度的倾斜角, Õ,对于通过例如电子背散射衍射(EBSD)或X射线衍射(XRD)确定的0°<Õ<20°的极点中的最高峰。