Composite Coatings from Layered Precursors: Material Structure Modeling and Thermal Control

层状前体复合涂层：材料结构建模和热控制

• 批准号: 9820790
• 负责人: Peter Wong
• 金额: $ 25.38万
• 依托单位: Tufts University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-09-01 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9820790&HistoricalAwards=false
• 关键词: Composite; Coatings; Layered; Precursors; Material

This research project introduces and analyzes new technologies for deposition of metal-matrix composite (MMC) coatings. The coating methods use novel custom precursor materials, made of the matrix metal in sheets and the reinforcing phase in powder or fiber form, rolled or twisted in a layered sandwich sheet or particulate-cored wire. Aluminum or nickel aluminide matrix is used in combination with alumina and/or silicon carbide reinforcement materials. The precursors are fused on the substrate by a robotically scanned laser-beam or plasma-arc welding source, under infrared thermal monitoring and feedback regulating the heat and mass deposition variables. Thus, the desired coating structure is obtained by real-time, adaptive control of the temperature distribution to reference thermal conditions, obtained experimentally and coded in a material database. The advantages of this technology include implementation simplicity, elimination of chamber enclosures, coating geometry and structure control, better adhesion, high material yield and low cost. Diversified applications in the aerospace, automotive, appliance and metalworking industry are explored in cooperation with Honda R&D and Starmet Corp. The collaborative research between Tufts and Northeastern University, combining complementary resources and expertise, also extends to educational activities, including a new Thermal Manufacturing course and a joint Tufts/Northeastern Thermal Material Processing Seminar.

该研究项目介绍并分析了用于沉积金属矩阵复合材料（MMC）涂层的新技术。涂料方法使用新颖的定制前体材料，该材料是由床单中的基质金属制成的，并以粉末或纤维形式的增强阶段制成，在分层的三明治板或颗粒状的电线中滚动或扭曲。 铝或镍铝制基质与氧化铝和/或碳化硅加固材料结合使用。 在红外热监测和反馈下，通过机器人扫描的激光梁或等离子体 - ARC焊接源将前体融合在底物上，从而调节热量和质量沉积变量。 因此，所需的涂层结构是通过实时的，自适应控制温度分布到参考热条件的，在实验中获得并在材料数据库中进行编码的。 该技术的优点包括实施简单性，消除腔室外壳，涂料几何形状和结构控制，更好的粘附，高材料产量和低成本。 与本田R＆D和Starmet Corp合作探索了航空航天，汽车，电器和金属加工行业的多元化应用。塔夫茨大学与东北大学之间的合作研究，结合了互补的资源和专业知识，还扩展到教育活动，包括新的热力制造课程，包括新的Themal Manufacturing Course，Tufts/Norther Tufts/Norther Tufts/Norther Tufts/Norther Tufts/Norther Tumal Theral Thermal Thermal Thermal Thermal Theral Forthering Sempering sempering semanting semanting semning。