Functionally Graded Nano-coatings for Dry Machining

本项目旨在研究刀具用超晶格涂层的沉积和性能，以确定多层涂层在干式加工中的有效性。其目的是开发一种定制设计、评估和制造具有特定干式加工应用所需性能的涂层的方法。研究计划包括TiN/Si3N4涂层过程的建模和实验测试，以及所得到涂层的物理特性。对纳米涂层的疲劳和断裂行为进行模拟，以研究切削过程中建立的温度场对寿命预测的影响。干式加工实验将确定实际的温度场，以验证切割系统模型和纳米涂层刀具的寿命性能。主要研究人员将带来材料科学和工程、机械工程和工程力学方面的专业知识，以解决涂层开发和性能的复杂问题。这一跨学科项目既包括三个部门研究生和本科生课程的教育部分，也包括针对高中生的外联部分。

This project is to investigate the deposition and performance of a superlattice coating for cutting tools to determine the effectiveness of the multilayer coating for dry machining. The intent is to develop a method for custom designing, evaluating, and manufacturing coatings with desirable properties for specific dry machining applications. The research plan includes modeling and experimental testing of the coating process for TiN/Si3N4, as well as the physical characterization of the resulting coatings. The fatigue and fracture behavior of the nano-layer coatings will be modeled to study the effects of the temperature field established in the cutting process upon the life prediction. Dry machining experiments will be conducted to determine the actual temperature field for validation of the cutting system modeling and the life performance of the nano-coated tools. The principal investigators will bring expertise in materials science and engineering, mechanical engineering, and engineering mechanics to address the complex issues of the coating development and performance. The interdisciplinary project includes both an educational component for graduate and undergraduate curricula in three departments as well as an outreach component for high school students.