Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
SURFACE-COATED CUBIC BORON NITRIDE SINTERED TOOL
PROBLEM TO BE SOLVED: To provide a surface-coated cBN tool the hard coating layer of which exhibits an excellent defect resistance and abrasion resistance in strong intermittent cutting work.SOLUTION: A surface-coated cBN tool, where an A-layer and B-layer alternate laminate structure is formed on the surface of a cBN base material, makes a cBN particle in a cBN base material have a peak of a particle size distribution present in a range of 0.50-1.00 μm with the half value full width of the peak satisfying 0.33-0.73 μm, and where the A-layer has an average composition satisfying (TiAl)N(where 0.4≤x≤0.7), and B-layer (AlCrSiCu) N (where 0.15≤a≤0.40, 0.05≤b 0.20, 0.005≤c≤0.05, the B-layer comprises a composition modulation structure that an Si component concentration changes along the layer thickness direction; further, when a rigid coating layer is measured by XRD, the diffraction peak of a (200) plane is present at a position of 43.6± 0.1 degrees, and the half value full width of the peak at a position of 0.25± 0.05 degrees.SELECTED DRAWING: Figure 1
【課題】 強断続切削加工において、硬質被覆層がすぐれた耐欠損性と耐摩耗性を発揮する表面被覆ｃＢＮ工具を提供する。【解決手段】 ｃＢＮ基体表面に、Ａ層とＢ層の交互積層構造が形成されている表面被覆ｃＢＮ工具であって、ｃＢＮ基体中のｃＢＮ粒子は、粒径０．５０〜１．００μｍの範囲に粒度分布のピークが存在し、該ピークの半値全幅は０．３３〜０．７３μｍを満足し、Ａ層は（Ｔｉ１−ｘＡｌｘ）Ｎ（但し、原子比で、０．４≦ｘ≦０．７）、Ｂ層は（Ａｌ１−ａ−ｂ−ｃＣｒａＳｉｂＣｕｃ）Ｎ（但し、原子比で、０．１５≦ａ≦０．４０、０．０５≦ｂ≦０．２０、０．００５≦ｃ≦０．０５）を満足する平均組成を有し、前記Ｂ層はＳｉ成分濃度が層厚方向に沿って変化する組成変調構造を備え、さらに、硬質被覆層をＸＲＤ測定したとき、（２００）面の回折ピークは４３．６±０．１度の位置に存在し、該ピークの半値全幅は０．２５±０．０５度である。【選択図】 図１
SURFACE-COATED CUBIC BORON NITRIDE SINTERED TOOL
PROBLEM TO BE SOLVED: To provide a surface-coated cBN tool the hard coating layer of which exhibits an excellent defect resistance and abrasion resistance in strong intermittent cutting work.SOLUTION: A surface-coated cBN tool, where an A-layer and B-layer alternate laminate structure is formed on the surface of a cBN base material, makes a cBN particle in a cBN base material have a peak of a particle size distribution present in a range of 0.50-1.00 μm with the half value full width of the peak satisfying 0.33-0.73 μm, and where the A-layer has an average composition satisfying (TiAl)N(where 0.4≤x≤0.7), and B-layer (AlCrSiCu) N (where 0.15≤a≤0.40, 0.05≤b 0.20, 0.005≤c≤0.05, the B-layer comprises a composition modulation structure that an Si component concentration changes along the layer thickness direction; further, when a rigid coating layer is measured by XRD, the diffraction peak of a (200) plane is present at a position of 43.6± 0.1 degrees, and the half value full width of the peak at a position of 0.25± 0.05 degrees.SELECTED DRAWING: Figure 1
【課題】 強断続切削加工において、硬質被覆層がすぐれた耐欠損性と耐摩耗性を発揮する表面被覆ｃＢＮ工具を提供する。【解決手段】 ｃＢＮ基体表面に、Ａ層とＢ層の交互積層構造が形成されている表面被覆ｃＢＮ工具であって、ｃＢＮ基体中のｃＢＮ粒子は、粒径０．５０〜１．００μｍの範囲に粒度分布のピークが存在し、該ピークの半値全幅は０．３３〜０．７３μｍを満足し、Ａ層は（Ｔｉ１−ｘＡｌｘ）Ｎ（但し、原子比で、０．４≦ｘ≦０．７）、Ｂ層は（Ａｌ１−ａ−ｂ−ｃＣｒａＳｉｂＣｕｃ）Ｎ（但し、原子比で、０．１５≦ａ≦０．４０、０．０５≦ｂ≦０．２０、０．００５≦ｃ≦０．０５）を満足する平均組成を有し、前記Ｂ層はＳｉ成分濃度が層厚方向に沿って変化する組成変調構造を備え、さらに、硬質被覆層をＸＲＤ測定したとき、（２００）面の回折ピークは４３．６±０．１度の位置に存在し、該ピークの半値全幅は０．２５±０．０５度である。【選択図】 図１
SURFACE-COATED CUBIC BORON NITRIDE SINTERED TOOL
耐摩耗性と耐欠損性を両立した表面被覆立方晶窒化ホウ素焼結体工具
MAEKAWA TAKUYA (Autor:in) / TAKAHASHI MASAKUNI (Autor:in) / SATO SHUN (Autor:in)
21.06.2018
Patent
Elektronische Ressource
Japanisch
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