Research Initiation Award: Multi-layer Composite Coatings for High Speed Machining

研究启动奖：用于高速加工的多层复合涂层

• 批准号: 9209209
• 负责人: Jagannadham Kasichainula
• 金额: $ 9万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-01 至 1996-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9209209&HistoricalAwards=false
• 关键词: Research; Initiation; Award; Multi; layer

The object of the project is to develop multilayer composite coatings on carbide tool inserts for high speed machining of steel and cast iron. Nonequilibrium processing using laser physical vapor deposition will be employed. A multitarget, high vacuum chamber with facilities to maintain selective environment and in- situ process the coatings has been designed and constructed. Titanium carbide will be deposited on tungsten carbide tool insert to form and initial adherent coating. Multilayer composite coatings will be developed. Laser parameters, thickness and number of the layers of the coatings will be optimized to achieve high quality coatings. The coatings will be characterized using modern analytical techniques to determine second phase formation, interdiffusion, segregation, and epitaxial nature of the interface. Mechanical properties of the coatings will be evaluated. The coated tools will be tested in high speed machining to determine the wear and failure mechanisms. The project should lead to the development of coatings for cutting tools with improved wear resistance which should allow increased productivity in machining.

该项目的目标是开发多层复合材料 高速加工钢的硬质合金刀片上的涂层 和铸铁。 激光物理非平衡加工 将采用气相沉积。 多目标、高真空 有设施的房间，以保持选择性的环境和在- 设计并构建了原位合成涂层。 碳化钛将沉积在碳化钨刀片上 以形成初始粘附涂层。 多层复合 将开发涂层。 激光参数、厚度和数量 涂层的层的厚度将被优化，以实现高 优质涂料。 涂层将采用现代 测定第二相形成的分析技术， 界面的相互扩散、偏析和外延性质。 将评价涂层的机械性能。 的 涂层刀具将在高速加工中进行测试，以确定 磨损和失效机制。 该项目应导致涂料的发展， 具有改进的耐磨性的切削工具， 提高了机械加工的生产率。