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金属基复合材料（MMC）涂层沉积的新技术。涂层方法使用新颖的定制前体材料，由片状基质金属和粉末或纤维形式的增强相制成，在层状夹层板或颗粒芯线中轧制或扭曲。 铝或铝化镍基体与氧化铝和/或碳化硅增强材料结合使用。 在红外热监测和反馈调节热和质量沉积变量的情况下，通过机器人扫描激光束或等离子弧焊源将前驱体熔合在基材上。 因此，通过对参考热条件的温度分布进行实时、自适应控制来获得所需的涂层结构，这些参考热条件是通过实验获得并编码在材料数据库中的。 该技术的优点包括实施简单、消除腔室外壳、涂层几何形状和结构控制、更好的附着力、高材料产量和低成本。 与本田研发中心和 Starmet Corp 合作探索航空航天、汽车、家电和金属加工行业的多样化应用。塔夫茨大学和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，包括新的热制造课程和塔夫茨大学/东北大学联合热材料加工研讨会。