Cutting and Shaping of Hard Ceramics with a CO2 Laser

使用 CO2 激光器切割和成型硬质陶瓷

• 批准号: 8711255
• 负责人: Michael Modest
• 金额: $ 23.4万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-08-15 至 1990-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8711255&HistoricalAwards=false
• 关键词: Cutting; Shaping; Hard; Ceramics; CO2

The development of reliable, high intensity lasers operating at wavelengths readily absorbed by most materials has led to their use as directed heat sources for manufacturing. The focus of the present investigation is the application of carbon dioxide lasers to three-dimensional cutting and shaping of ultrahard ceramic materials such as silicon carbide and silicon nitride. An important drawback to silicon compound ceramics is their extreme hardness, which makes their processing and shaping an extremely difficult, tedious, and expensive procedure. Preliminary work has shown that vastly higher removal rates are possible with a carbon dioxide laser than with conventional diamond grinding. The research to be performed will provide understanding of laser machining process, which is essential in order to make it technically and economically viable. The proposed work is interdisciplinary in nature. It falls in the area of thermal processing, bridging across the interface between heat transfer and materials.

可靠的高强度激光器的发展， 大多数材料容易吸收的波长导致了它们的 用作制造业的直接热源。 的重点 目前的研究是二氧化碳激光器的应用 超硬陶瓷的三维切割和成形 材料如碳化硅和氮化硅。 硅化合物陶瓷的一个重要缺点是其 极高的硬度，使它们的加工和成型成为 极其困难、乏味和昂贵的过程。 初步工作表明， 二氧化碳激光器比传统的激光器更有可能 金刚石研磨 研究将提供 了解激光加工工艺，这是必不可少的， 使其在技术上和经济上可行。 拟议的工作具有跨学科性质。 它会掉进去福尔斯 热处理区域，桥接界面 传热和材料之间的联系。