Natalia L. Cadena 1, Rodrigo Cue-Sampedro 1, Héctor R. Siller 1,*,
Ana M. Arizmendi-Morquecho 2, Carlos I. Rivera-Solorio 1 和 Santiago Di-Nardo 1
1蒙特雷校区Eugenio Garza Sada 2501，蒙特雷64849，N.L.，墨西哥; 电子邮件：[email protected]（N.L.C.）; [email protected]（R.C.-S.）; [email protected]（C.I.R.-S.）; [email protected]（S.D.-N.）
2 中心de Investigación en Materiales Avanzados, 南卡罗来纳州危地马拉蒙特雷, 66600, Alianza Nte. 202, Apodaca, 约束, 墨西哥;电子邮件: [email protected] [email protected] mx
摘要: 由钛合金制造的医疗和航空零部件和其他难以切割的材料需要开发高性能的刀具, 涂层材料能够增强摩擦学和电阻特性。本文对 AlCrN (aluminum–chromium–nitride) 制备的薄层纳米复合膜进行了研究, 并对沉积过程及其表征进行了实验研究。分析了热处理的单层涂层与其他涂层在钛合金加工中的竞争。用扫描电镜和能量色散 X 射线光谱 (SEM-EDXS) 和 x 射线衍射 (XRD) 对制备的涂层进行了不同的分析和表征。通过硬度试验和摩擦学方法对涂层的力学性能进行了评价, 以量化摩?#26009;?#25968;和磨损率。最后, 采用涂层硬质合金刀具进行切削加工试验, 通过耐磨性来确定其性能, 这是高温下高档切削刀具的关键问题。结果表明, 试样 (摩?#26009;?#25968;比以往研究更低) 在 Ti6Al4V 合金的切削加工试验中更?#34892;А?#27492;外, 热处理单层涂层比传统的 AlCrN 涂层具有更好的性能.
关键字: AlCrN 胶片;PVD 沉积;刀具寿命;耐磨性;摩?#26009;?#25968;
Abstract: The manufacture of medical and aerospace components made of titanium alloys and other difficult-to-cut materials requires the parallel development of high performance cutting tools coated with materials capable of enhanced tribological and resistance properties. In this matter, a thin nanocomposite film made out of AlCrN (aluminum–chromium–nitride) was studied in this research, showing experimental work in the deposition process and its characterization. A heat-treated monolayer coating, competitive with other coatings in the machining of titanium alloys, was analyzed. Different analysis and characterizations were performed on the manufactured coating by scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM-EDXS), and X-ray diffraction (XRD). Furthermore, the mechanical behavior of the coating was evaluated through hardness test and tribology with pin-on-disk to quantify friction coefficient and wear rate. Finally, machinability tests using coated tungsten carbide cutting tools were executed in order to determine its performance through wear resistance, which is a key issue of cutting tools in high-end cutting at elevated temperatures. It was demonstrated that the specimen (with lower friction coefficient than previous research) is more efficient in machinability tests in Ti6Al4V alloys. Furthermore, the heat-treated monolayer coating presented better performance in comparison with a conventional monolayer of AlCrN coating.
Materials 2013, 6 2144
Keywords: AlCrN films; PVD deposition; cutting tool life; wear resistance; friction coefficient