Production of Submicron Spherical Ceramic Particles

亚微米球形陶瓷颗粒的生产

• 批准号: 9161394
• 负责人: James Withers
• 金额: $ 5万
• 依托单位: Materials and Electrochemical Research Corporation (MER)
• 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: 1992-01-01 至 1992-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9161394&HistoricalAwards=false
• 关键词: Production; Submicron; Spherical; Ceramic; Particles

High purity, submicron, spherical, high surface area particles of covalent ceramics are key to achieving high density materials, which exhibit high strength and creep resistance at high temperatures. Currently available covalent ceramic particles, lead to poor high temperature strength and creep resistance. This program will investigate a simple process that will produce stoichiometric high purity, submicron, spherical ceramic particles with a very high surface area which will allow for self sintering of covalently bonded ceramics. The particle synthesis process consists in evaporating high purity silicon into a plasma of nitrogen or methane to produce Si3N4 or SiC particles. The properties of the sintered ceramic will be assessed. It is expected that the sintered particles, produced at substantial savings, will replace existing materials and expand the market in automotive, aerospace, all engines conversion, wear and cutting tools.

高纯度、亚微米级、球形、高比表面积的共价陶瓷颗粒是实现高密度材料的关键，具有较高的高温强度和抗蠕变性能。目前可用的共价陶瓷颗粒，导致高温强度和抗蠕变性能差。该计划将研究一种简单的工艺，该工艺将生产具有非常高表面积的高纯度，亚微米球形陶瓷颗粒，这将允许自烧结共价键合陶瓷。颗粒合成过程包括将高纯度硅蒸发到氮气或甲烷等离子体中以产生Si3N4或SiC颗粒。将对烧结陶瓷的性能进行评估。预计以大量节省成本生产的烧结颗粒将取代现有材料，并扩大汽车，航空航天，所有发动机转换，磨损和切削工具的市场。