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AlCrTiSiN多元复合涂层能显著改善刀具的表面特性,可大幅提高刀具的切削性能,延长刀具使用寿命。在高速钢样品和铣刀表面通过多弧离子镀制备AlCrTiSiN多元复合涂层,并研究了Al/Cr原子比对AlCrTiSiN多元复合涂层微观结构及切削性能的影响。采用X射线衍射仪(XRD)、X射线光电子能谱仪(XPS)、纳米压痕仪、划痕仪和球盘摩擦磨损试验对涂层的微观结构和力学性能进行研究,并通过切削试验对涂层刀具的寿命进行测试。研究结果表明:当Al/Cr比为0.4时,AlCrTiSiN涂层物相由fcc-AlCrN,fcc-Al Ti N,hcp-Al N和非晶态Si_3N_4相组成,涂层呈现(200)AlCrN择优取向;随Al/Cr比由0.4降低至0.2时,涂层物相由fcc-AlCrN,fcc-Al Ti N,hcp-Cr2N和非晶态Si_3N_4相组成,(200)AlCrN择优取向消失。随Al/Cr比由0.4降低至0.2时,AlCrTiSiN涂层硬度和结合力增加,摩擦因数和磨损率降低,与另两组相比,AlCrTiSiN-3涂层具有较好的抗摩擦磨损性能,其涂层刀具具有相对较高的切削寿命。
AlCrTiSiN multiple composite coating can significantly improve the surface characteristics of the tool can significantly improve the cutting tool performance and extend tool life. The AlCrTiSiN composite coating was prepared by multi-arc ion plating on the surface of high speed steel sample and milling cutter. The effect of Al / Cr atomic ratio on microstructure and cutting performance of AlCrTiSiN composite coating was also studied. The microstructure and mechanical properties of the coatings were investigated by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), nanoindentation, scratch tester and ball disc friction and wear test. The life of the coated tool is tested. The results show that the AlCrTiSiN coating phase is composed of fcc-AlCrN, fcc-Al TiN, hcp-AlN and amorphous Si_3N_4 phases when the Al / Cr ratio is 0.4. . When the ratio of Al / Cr decreases from 0.4 to 0.2, the coating phases are composed of fcc-AlCrN, fcc-Al TiN, hcp-Cr2N and amorphous Si_3N_4 phases. The preferred orientation of (200) AlCrN disappears. With the Al / Cr ratio reduced from 0.4 to 0.2, AlCrTiSiN coating hardness and adhesion increased, the friction coefficient and wear rate decreased, compared with the other two groups, AlCrTiSiN-3 coating has good anti-friction and wear properties, the Coated tools have a relatively high cutting life.