GOALI: Laser Surface Processing of Ceramic Eutectics for Enhanced Cutting Tool Performance

GOALI：陶瓷共晶激光表面加工可增强切削刀具性能

• 批准号: 1031542
• 负责人: Elizabeth Dickey
• 金额: $ 33.72万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-10-01 至 2011-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1031542&HistoricalAwards=false
• 关键词: GOALI; Laser; Surface; Processing; Ceramic

The research program, which is in collaboration with Kennametal, Inc., Latrobe, PA, aims to advance the fundamental understanding of nanoscale ceramic composites for potential use in abrasive and cutting tool materials. Ceramic eutectic surface layers will be deposited onto commercial cutting tools via laser solidification, which is a commercially scalable technique. Moreover, the laser processing allows for high processing velocities that lead to well-oriented, nanoscale eutectic microstructures, smaller than that achievable by conventional processes. This resulting nanoscale microstructures are expected to lead to marked property enhancements (e.g. in hardness, strength and wear). The research will develop two classes of eutectics: oxides and carbides for the surface modification of Al2O3- and WC-based cutting tools, respectively. Through quantitative microstructural and mechanical property characterization, the dominant deformation mechanisms and microstructural scaling laws for these classes of ceramic eutectics will be determined.The research program is anticipated to lead to a new method for enhancing the mechanical properties and lifetimes of high-performance cutting tools. The direct interactions with Kennametal Inc. will increase the likelihood that the methods can be quickly adopted and integrated into a commercial process. In addition, the research program will train students, both graduate and undergraduate, in a unique academic/industrial research setting and prepare them to enter and lead the growing fields of laser processing and tribological surface coatings.

该研究计划与宾夕法尼亚州Latrobe的Kennametal，Inc。合作，旨在促进对纳米级陶瓷复合材料的基本了解，以在磨料和切割工具材料中使用。陶瓷的共晶表面层将通过激光凝固沉积到商业切割工具上，这是一种可扩展的技术。 此外，激光处理允许高处理速度，从而导致良好的纳米级共晶微观结构，比传统过程可实现的速度小。 预计所得的纳米级微结构将导致明显的性质增强（例如，硬度，强度和磨损）。 该研究将开发两类的共晶：分别用于基于Al2O3和WC的切割工具的氧化物和碳化物。通过定量的微观结构和机械性能表征，将确定这些类别的陶瓷互联网的主要变形机制和微结构缩放定律。预计该研究计划将导致一种新的方法来增强高性能削减工具的机械性能和寿命。与Kennametal Inc.的直接互动将增加可以快速采用并将其集成到商业过程中的可能性。此外，研究计划将在独特的学术/工业研究环境中培训研究生和本科生，并准备进入并领导不断增长的激光处理和摩擦学表面涂料领域。