Al 2 O 3 nano-scaled coating was prepared on micro-textured YT5 cemented carbide cutting tools by atomic layer deposition ALD. The effect of Al 2 O 3 nano-scaled coating, with and without combined action of texture, on the cutting performance was studied by orthogonal cutting test. The results were compared with micro-textured cutting tool and YT5 cutting tool. They show that the micro-texture and nano-scaled Al 2 O 3 coated on the micro-texture both can reduce the cutting force and friction coefficient of the tool, and the tools with nano-scaled Al 2 O 3 coated on the micro-texture are more efficient. Furthermore, the friction coefficient of the 100 nm Al 2 O 3 -coated micro-texture tool is relatively low. When the distance of the micro-pits is 0.15 mm, the friction coefficient is lowest among the four kinds of pit textured nanometer coating tools. The friction coefficient is the lowest when the direction of the groove in strip textured nanometer coating tool is perpendicular to the main cutting edge. The main mechanism of the nanometer Al 2 O 3 on the micro-textured tool to reduction in cutting force and the friction coefficient is discussed. These results show that the developed tools effectively decrease the cutting force and friction coefficient of tool–chip interface.

中文翻译：

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原子层沉积制备纳米级Al2O3涂层微织构切削刀具的制备及切削性能

通过原子层沉积ALD在微织构YT5硬质合金切削刀具上制备了Al 2 O 3纳米级涂层。通过正交切削试验研究了Al 2 O 3纳米级涂层在有无复合织构作用下对切削性能的影响。将结果与微纹理切削刀具和YT5切削刀具进行了比较。结果表明，微织构和纳米尺度的Al 2 O 3涂层均可以降低刀具的切削力和摩擦系数，而纳米晶构筑的Al 2 O 3涂层的刀具可以降低刀具的切削力和摩擦系数。质地更有效。此外，涂覆有100nm Al 2 O 3的微织构工具的摩擦系数相对较低。当微坑的距离为0.15毫米时，在四种凹坑纹理化纳米涂层工具中，摩擦系数最低。当条状纳米涂层工具中的凹槽方向垂直于主切削刃时，摩擦系数最低。讨论了纳米Al 2 O 3在微织构刀具上降低切削力和降低摩擦系数的主要机理。这些结果表明，开发的刀具可有效降低刀具与切屑界面的切削力和摩擦系数。