Self-lubricating TiN/MoN and TiAlN/MoN nano-multilayer coatings for drilling of austenitic stainless steel
Self-lubricating TiN/MoN and TiAlN/MoN nano-multilayer coatings for drilling of austenitic stainless steel
复制标题
用于奥氏体不锈钢钻孔的自润滑TiN/MoN和TiAlN/MoN纳米多层涂层
DOI：
10.1016/j.ceramint.2019.08.136
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发表时间：
2019-12-15
影响因子：
5.2
通讯作者：
Zhang, Guojun
中科院分区：
文献类型：
--
作者：
Wang, Tao;Zhang, Jia;Zhang, Guojun
采用闭合场非平衡磁控溅射技术在高速钢钻头表面制备了TiN/MoN和TiAlN/MoN纳米多层自润滑涂层。TiN/MoN和TiAlN/MoN纳米多层膜均为面心立方结构，分别具有（200）和（111）择优取向。TiN/MoN涂层具有比TiAlN/MoN涂层（21 GPa）更高的硬度（31 GPa）。TiN/MoN和TiAlN/MoN涂层都表现出低摩擦系数，其值约为0.32。在奥氏体不锈钢干式钻削试验中，TiN/MoN和TiAlN/MoN涂层钻头的切削力和切削刃温度均比未涂层钻头显著降低。TiN/MoN和TiAlN/MoN涂层钻头的孔数分别是未涂层钻头的4.2倍和2.4倍。TiN/MoN和TiAlN/MoN涂层钻头避免了堆积刃，与未涂层高速钢钻头相比，钻孔的表面质量更好。
Self-lubricating TiN/MoN and TiAlN/MoN nano-multilayer coatings were fabricated on the HSS drills by a closed field unbalanced magnetron sputtering system. The as-deposited TiN/MoN and TiAlN/MoN nano-multilayer coatings exhibit a face-centered cubic structure with (200) and (111) preferred orientation, respectively. The TiN/MoN coating possessed higher hardness of 31 GPa than that of TiAlN/MoN coating (21 GPa). Both of the TiN/MoN and TiAlN/MoN coating exhibit low coefficient of friction with values of about 0.32. The cutting force and temperature of cutting edge of TiN/MoN and TiAlN/MoN coated drills were remarkably decreased compared to uncoated drills during the dry drilling test in austenitic stainless steel. The numbers of drilling holes of TiN/MoN and TiAlN/MoN coated drills were 4.2 and 2.4 times larger than that of uncoated HSS drills. The build-up edge was avoided on TiN/MoN and TiAlN/MoN coated drills which resulted in better surface quality of drilled holes compared to uncoated HSS drills.