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Making use of the arc ion plating device which it opposes lays out the rare earth metal where the surface canning which shows the abrasion resistance where high speed heavily the hard enveloping layer
Making use of the arc ion plating device which it opposes lays out the rare earth metal where the surface canning which shows the abrasion resistance where high speed heavily the hard enveloping layer
PROBLEM TO BE SOLVED: To provide a cutting tool of surface-coated cemented carbide with a hard coating layer achieving excellent abrasion resistance in high speed heavy cutting conditions.;SOLUTION: On the surface of tungsten carbide-based cemented carbide substrate or titanium carbonitride-based cermet substrate, a hard coating layer of composite nitride of Al, Ti and a rare-earth metal is formed in a total average layer thickness of 1-15μm by physical deposition. The hard coating layer has a component thickness distribution structure in a thickness direction in which Al-content highest points and Ti-content highest points alternately and repeatedly exist at prescribed intervals, and in which Al and Ti contents are respectively and continuously varied from the Al-content highest point to the Ti-content highest point, and from the Ti-content highest point to the Al-content highest point. The Al-content highest point satisfies a formula: (Al1-(X+Z)TiXRZ)N, and the Ti-content highest point satisfies a formula: (Ti1-(Y+Z)AlYRZ)N. The interval between the adjoining Al-content highest point and Ti-content highest point is 0.01-0.1μm.;COPYRIGHT: (C)2004,JPO
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机译：解决的问题：提供一种带有硬质涂层的表面涂层硬质合金切削刀具，在高速重切削条件下具有优异的耐磨性。;解决方案：在碳化钨基硬质合金基体或碳氮化钛上-在金属基的金属陶瓷基片上，通过物理淀积形成总厚度平均为1-15μm的Al，Ti和稀土金属的复合氮化物的硬涂层。硬涂层具有在厚度方向上的成分厚度分布结构，其中Al含量最高点和Ti含量最高点以预定间隔交替且重复地存在，并且Al和Ti含量分别与Al连续地变化。含量最高点到Ti含量最高点，以及从Ti含量最高点到Al含量最高点。 Al含量最高点满足公式：（Al 1-（X + Z） Ti X R Z ）N，而Ti含量最高点满足公式：（Ti 1-（Y + Z） Al Y R Z ）N。相邻的Al含量最高点和Ti含量最高点之间的间隔为0.01-0.1μm。版权所有：（C）2004，日本特许厅
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