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Influence of modulation ratio on the structure and mechanical properties of TiB_2/TiAlN multilayered coatings

机译:调制比对TiB_2 / TiAlN多层涂层结构和力学性能的影响

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TiB_2/TiAlN multilayered coatings with various modulation ratios (t_(TiB_2): t_(TiAlN)) were grown using radio-frequency magnetron sputtering at room temperature. Nanoindentation, tester for material surface properties, and XRD were used to investigate the influence of modulation ratio on microstructure and properties of the multilayers. All multilayers showed improved mechanical properties, compared with the average value of the monolithic TiB_2 and TiAlN coatings. The multilayer with modulation ratio of 5:2 displayed the highest hardness (36 GPa) and longest time to crack during wear. A marked layer structure with the strong mixture of TiAlN (111), AlN (111), and TiB_2 (001) textures with smaller grain sizes was responsible for the enhanced hardness.
机译:使用射频磁控溅射在室温下生长各种调制比(t_(TiB_2):t_(TiAlN))的TiB_2 / TiAlN多层涂层。纳米压痕,材料表面性能测试仪和XRD用于研究调制比对多层微结构和性能的影响。与整体式TiB_2和TiAlN涂层的平均值相比,所有多层均显示出改善的机械性能。调制比为5:2的多层显示出最高的硬度(36 GPa)和最长的磨损破裂时间。带有较小晶粒尺寸的TiAlN(111),AlN(111)和TiB_2(001)织构的强烈混合的显着层结构是造成硬度增加的原因。

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