Synthesis and Mechanical Properties of Microlaminates Using Ion Beam Assisted Deposition

使用离子束辅助沉积的微层压板的合成和机械性能

• 批准号: 9411141
• 负责人: Gary Was
• 金额: $ 46.62万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-11-15 至 1998-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9411141&HistoricalAwards=false
• 关键词: Synthesis; Mechanical; Properties; Microlaminates; Using

9411141 Was The objective of this work is to explore the use of ion beam assisted deposition (IBAD) to control the microstructure and interface properties of microlaminates. The results should provide a more fundamental understanding of factors controlling strength and toughness in these systems. Niobium/alumina is selected as the model, high temperature system to explore IBAD's effect on grain size, morphology, texture and ensuing strength of the ductile layer. It may be possible to control the metal-oxide interface strength by controlling the orientation relationship and the impurity composition at the interface. Although the depositions are done at high temperature (600 degrees C) and still higher temperature annealing is conducted to assess microstructural stability, the focus of the mechanical properties study is the toughness of the microlaminate at ambient temperature. %%% The scientific approach is based on the idea that ion beam assisted deposition provides improved control over the structure of individual lamellae and interfaces in microlaminates, thereby improving the toughness and strength of these materials for high temperature applications as structural and coating materials. ***

本研究的目的是探索利用离子束辅助沉积（IBAD）来控制微层压板的微观结构和界面性能。结果应提供一个更基本的了解因素控制强度和韧性在这些系统。以铌/氧化铝为模型，高温体系探讨IBAD对延性层晶粒尺寸、形貌、织构及随后强度的影响。通过控制界面的取向关系和杂质组成来控制金属-氧化物界面强度是可能的。虽然沉积是在高温（600℃）下进行的，并且还进行了更高温度的退火以评估微观结构的稳定性，但力学性能研究的重点是微层板在环境温度下的韧性。科学的方法是基于这样的想法：离子束辅助沉积可以更好地控制微层压板中单个片层和界面的结构，从而提高这些材料的韧性和强度，用于高温结构和涂层材料。＊＊＊