发明名称 硬質被覆層が高速断続切削ですぐれた耐チッピング性を発揮する表面被覆切削工具
摘要 <p>The invention provides a surface coating cutting tool of a hard coating layer having an excellent anti-tipping performance. According to the surface coating cutting tool, a lower layer is a Ti compound layer, and an upper layer is an alfa A12O3 layer containing Zr. An outmost surface of the lower layer is provided with a TiCN layer having a thickness of more than 500nm, and a depth area in the 500nm thickness direction of the TiCN layer comprises oxygen having an average content of 0.5-3 atom%. The scanning type electronic microscope and an electronic backscatter diffraction device can be used to detect the particle size distribution of the upper layer surface containing the alfa A12O3 grain of Zr, and the particle size in a range from 0.3 to 0.7(mu)m and the particle size in a range from 1.5 to 3.0(mu)m are the peak value. In the particles having a size more than 1(mu)m, the inclined angle between the normal of the (0001) surface and the normal of the tool base surface is in a range from 0-10degrees, and the particles in the range are more than 79 area%. On the other hand, in the particles having the size lower than 1(mu)m, the inclined angle between the normal of the (11-20) surface and the normal of the tool base surface is in a range from 0-10degrees, and the particles are more than 70 area%.</p>
申请公布号 JP5831707(B2) 申请公布日期 2015.12.09
申请号 JP20120056661 申请日期 2012.03.14
申请人 三菱マテリアル株式会社 发明人 奥出 正樹;五十嵐 誠;長田 晃
分类号 B23B27/14;C23C16/30;C23C16/40 主分类号 B23B27/14
代理机构 代理人
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