A Novel Temperature Adaptive Nano-crystalline Dry Lubricant plus Hard Phase Composite Coating for Cutting Tools and Advanced Machining Applications

用于切削工具和先进加工应用的新型温度自适应纳米晶干润滑剂加硬相复合涂层

• 批准号: 0115532
• 负责人: William Brown
• 金额: --
• 依托单位: University of Arkansas
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-15 至 2007-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0115532&HistoricalAwards=false
• 关键词: Novel; Temperature; Adaptive; Nano; crystalline

This project is to design, develop and test a novel temperature adaptive and nano-crystalline dry lubricant (MoS2+ZnO) plus hard phase (TiN) composite coating for cutting tools and advanced machining applications. The nano-crystalline dry lubricant (MoS2+ZnO) particulate coating will be deposited using an innovative electrostatic spray coating (ESC) process. In this project, nano-crystalline ZnO particles, coated with MoS2 via a ball milling process, will be sprayed onto appropriate substrates using ESC. Sequentially, a hard TiN phase will be infiltrated into the nano-crystalline particulate ZnO matrix using a chemical vapor infiltration (CVI) process. The combination of ZnO + MoS2 was selected for investigation because it forms oxythiomolybdates and molybdates, which have exhibited an excellent potential for high temperature applications.The project is a collaboration between the Materials and Manufacturing Research Laboratories (MRL) at the University of Arkansas and Materials Research and Development (MRD) at Valenite-Widia. As a part of the project, students and university faculty will perform part of the research at Valenite. The experience gained in this manner will be of great benefit to the project and will generate an outstanding workforce knowledgeable in the emerging area of nano-technology and advanced manufacturing. This program will truly add scientific and engineering innovations to the state-of-the-art, and thus, will allow the investigators to competitively address the emerging needs of the multi-billion dollar cutting tool industry for low cost, temperature adaptive lubrication, even on complex surfaces. The establishment of this technology and resulting products can be a major step in the realization of dry machining for environmentally conscious "green" manufacturing.

本项目旨在设计、开发和测试一种新型的温度适应性纳米晶干式润滑剂(MoS_2+ZnO)和硬质相(TiN)复合涂层，用于刀具和高级机械加工应用。纳米晶干式润滑剂(MoS_2+ZnO)颗粒涂层将采用创新的静电喷涂(ESC)工艺进行沉积。在这个项目中，通过球磨过程包覆了MoS2的纳米晶氧化锌颗粒将使用ESC喷雾到适当的衬底上。随后，使用化学气相渗透(CVI)工艺将硬质TiN相渗透到纳米晶颗粒的氧化锌基质中。选择了氧化锌+二硫化钼的组合进行研究，因为它形成了氧硫代钼酸盐和钼酸盐，这两种化合物在高温应用方面具有很好的潜力。该项目是阿肯色大学材料与制造研究实验室(MRL)和瓦伦特-维迪亚材料研究与开发(MRD)之间的合作项目。作为该项目的一部分，学生和大学教职员工将在Valenite进行部分研究。以这种方式获得的经验将对该项目大有裨益，并将培养出一批在新兴纳米技术和先进制造领域具有知识的杰出劳动力。该项目将真正将科学和工程创新添加到最先进的技术中，从而使研究人员能够竞争性地满足价值数十亿美元的刀具行业对低成本、温度自适应润滑的新需求，即使是在复杂的表面上。这项技术和最终产品的建立可能是实现干式机械加工的重要一步，以实现环保的“绿色”制造。