Processing, Structure and Property Interrelationships for Laminated Matrix Composites

层压基复合材料的加工、结构和性能相互关系

• 批准号: 9632823
• 负责人: W. Jack Lackey
• 金额: $ 62万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-09-01 至 2001-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9632823&HistoricalAwards=false
• 关键词: Processing; Structure; Property; Interrelationships; Laminated

9632823 Lackey The objective of the proposed research is to study the interrelationships between the processing, structure, and properties of a new class of ceramic matrix composites. These new composites consist of a reinforcement phase plus a matrix composed of alternate thin layers of two different materials. Layered structures are known to enhance mechanical toughness, and thus, their use as the matrix, along with the reinforcement phase, should enhance the toughness of the overall composite. The 3 year project consists of composite processing, characterization, and mechanics modeling. The process-structure-property interrelationships for several laminated matrix composite systems will be studied. Fibers of interest are carbon, SiC, and Al2O3. Matrix materials will be selected from carbon, SiC, Si3N4, Al2O3, mullite, B13C2, Nb, and Re. Based on the results from the first two years, a preferred system will be selected for detailed study and optimization in the third year. We propose to identify the layer thicknesses and material properties (thermal expansion, elastic modulus, and strength) required to optimize the mechanical performance, particularly fracture toughness and strength, of this new class of composites. %%% The objective of the proposed research is to study the interrelationships between the processing, structure, and properties of a new class of ceramic matrix composites. These new composites consist of a reinforcement phase plus a matrix composed of alternate thin layers of two different materials. Layered structures are known to enhance mechanical toughness, and thus, their use as the matrix, along with the reinforcement phase, should enhance the toughness of the overall composite. Improvement of the properties of ceramic matrix composites will have a large impact on many commercial and defense systems. ***

小行星9632823雷基 拟议的研究的目的是研究一类新的陶瓷基复合材料的加工，结构和性能之间的相互关系。 这些新的复合材料由增强相加上由两种不同材料的交替薄层组成的基体组成。 已知层状结构增强机械韧性，因此，它们作为基体与增强相一起沿着使用，应当增强整个复合材料的韧性。 这个为期3年的项目包括复合材料加工，表征和力学建模。 将研究几种层压基体复合材料系统的工艺-结构-性能相互关系。感兴趣的纤维是碳、SiC和Al 2 O3。基质材料将选自碳、SiC、Si 3 N4、Al 2 O3、莫来石、B13 C2、Nb和Re。 根据前两年的结果，将在第三年选择一个首选系统进行详细研究和优化。我们建议确定层的厚度和材料性能（热膨胀，弹性模量，和强度），以优化机械性能，特别是断裂韧性和强度，这类新的复合材料。 拟议的研究的目的是研究一类新的陶瓷基复合材料的加工，结构和性能之间的相互关系。 这些新的复合材料由增强相加上由两种不同材料的交替薄层组成的基体组成。 已知层状结构增强机械韧性，因此，它们作为基体与增强相一起沿着使用，应当增强整个复合材料的韧性。 陶瓷基复合材料性能的改善将对许多商业和国防系统产生重大影响。 ***