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The surface canning which shows the abrasion resistance where high speed heavily the hard enveloping layer is superior under cutting conditions either the tungsten carbide basis
The surface canning which shows the abrasion resistance where high speed heavily the hard enveloping layer is superior under cutting conditions either the tungsten carbide basis
PROBLEM TO BE SOLVED: To provide a surface-coated cemented carbide cutting tool having a hard coat layer exhibiting excellent wear resistance under a high-speed double cutting condition.;SOLUTION: This surface-coated cemented carbide cutting tool comprises the hard coat layer consisting of a composite nitride of Al, Ti and Hf, which is physically evaporated on the surface of a tungsten carbide-group carbide base body or titanium carbide nitride-based cermet base body in an overall average layer thickness of 1-15μm. The hard coat layer is constituted by a hard coat layer having a component concentration distribution structure in which Al and Ti highest content points are alternately repeatedly present at prescribed intervals, and the Al and Ti contents are continuously changed from Al to the Ti highest content or from Ti to the Al highest content. Further, the Al and Ti highest content points satisfy composition formulae (Al1-(X+Y)XHfY)N and (Ti1-(Z+Y)AlZHfY)N, respectively, and the space between the adjacent Al and Ti highest content point is 0.01-0.1μm.;COPYRIGHT: (C)2004,JPO
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机译:解决的问题:提供一种表面涂层的硬质合金切削刀具,该刀具具有在高速双重切削条件下具有优异耐磨性的硬涂层。;解决方案:此表面涂层的硬质合金切削刀具包括以下硬涂层: Al,Ti和Hf的复合氮化物的总厚度为1-15μm,其物理蒸发在碳化钨基碳化物基体或碳化钛氮化物基金属陶瓷基体的表面上。硬涂层由具有组分浓度分布结构的硬涂层构成,其中Al和Ti的最高含量点以规定的间隔交替地重复存在,并且Al和Ti的含量从Al连续变化为Ti的最高含量或从钛到铝的最高含量。此外,Al和Ti的最高含量点满足组成式(Al 1-(X + Y)X Sub> Hf Y Sub>)N和(Ti 1-(Z + Y) Sub> Al Z Sub> Hf Y Sub>)N,相邻的Al和Ti最高含量点之间的间隔为0.01-0.1μm。 ;版权:(C)2004,日本特许厅
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