【摘要】 本文利用高真空离子束辅助沉积系统(IBAD),在室温下制备了ZrN、TiAlN和一系列ZrN/TiAlN纳米多层膜,利用XRD、纳米力学测试系统和多功能材料表面性能实验仪,分析了束流和基底温度对薄膜的微结构和机械性能的影响。结果表明:大部分多层膜的纳米硬度与弹性模量值都高于两种个体材料硬度的平均值,当辅助束流为5mA时,多层膜硬度达到30.6GPa。基底温度的升高,会显著降低薄膜的残余应力,但对薄膜的硬度,摩擦系数没有明显影响。更多还原

【Abstract】 The ZrN/TiAlN nanoscaled,multilayered coatings were grown by ion beam assisted deposition(IBAD)in ultra high vacuum(UHV)at room temperature.The microstructures and mechanical properties of the multi-layers were characterized with X-ray diffraction(XRD),and conventional mechanical probes.The results show that the surface hardness and elastic modulus of the ZrN/TiAlN multi-layers are much higher than those of the rule-of-mixture of monolithic ZrN and TiAlN coatings,and that the ion beam flux and the substrate temperature considerably affect the mechanical properties of the multi-layers.For example,at a N+ beam flux of 5mA,the hardness reaches a peak of 30.6 GPa.Besides,as the substrate temperature increases,the residual stress significantly releases but with little impact on hardness and friction coefficient.更多还原