Liquid-Film-Assisted Ceramic-Metal Bonding

液膜辅助陶瓷金属接合

• 批准号: 0522652
• 负责人: Andreas Glaeser
• 金额: --
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2006-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0522652&HistoricalAwards=false
• 关键词: Liquid; Film; Assisted; Ceramic; Metal

The objective of this study is to identify, examine and understand new mechanisms by which ceramic constituents can be joined into complex multicomponent assemblies using multilayer metallic interlayers as bonding agents. The approach utilizes liquid-film- assisted joining (LFAJ), which exploits structural and chemical changes occurring over microscopic to macroscopic length scales to achieve bonding at temperatures low enough to minimize the microstructural and property degradation of temperature-sensitive components, thereby enabling the formation of material combinations inaccessible by conventional methods. The proposed work focuses on joining a model ceramic-metal combination, Al2O3-Nb, using Ni/Nb/Ni trilayers. During joining a thin liquid film of Nb-saturated Ni will allow rapid Nb transport, and should facilitate direct Al2O3-Nb bonding. Optimizing LFAJ will require microdesign of the trilayer structure and chemistry, and tailoring of the joining surfaces. This project will assess the feasibility of this approach, and contributes to an ability to understand and ultimately control the formation of strong and durable bonds between ceramic components, facilitating the development of assemblies with arbitrarily complex shape.The work will establish fundamental microstructure-processing- property relationships in a more complex model system than prior studies, providing a template to guide successful extension of LFAJ to other systems. It will expose new avenues for joining bulk ceramics to bulk metals, and train graduate and undergraduate students in the increasingly important science of joining that is vital to materials integration in a wide range of transportation, medical, electronic and energy industries. Publications and presentations at meetings will disseminate the results to the broader materials community.

本研究的目的是确定、检查和了解使用多层金属夹层作为粘合剂将陶瓷成分连接到复杂的多组分组件中的新机制。该方法利用液膜辅助连接（LFAJ），利用从微观到宏观长度尺度上发生的结构和化学变化，在足够低的温度下实现粘合，从而最大限度地减少温度敏感部件的微观结构和性能退化，从而形成传统方法无法实现的材料组合。拟议的工作重点是使用 Ni/Nb/Ni 三层连接模型陶瓷-金属组合 Al2O3-Nb。在连接过程中，Nb 饱和 Ni 的薄液膜将允许 Nb 快速传输，并且应有利于 Al2O3-Nb 的直接键合。优化 LFAJ 需要对三层结构和化学进行微观设计，并对连接表面进行定制。该项目将评估这种方法的可行性，并有助于理解并最终控制陶瓷部件之间牢固而持久的结合的形成，从而促进具有任意复杂形状的组件的开发。这项工作将在比之前的研究更复杂的模型系统中建立基本的微观结构-加工-性能关系，提供一个模板来指导LFAJ成功扩展到其他系统。它将揭示连接大块陶瓷与大块金属的新途径，并培训研究生和本科生了解日益重要的连接科学，这对于广泛的运输、医疗、电子和能源行业的材料集成至关重要。会议上的出版物和演示将向更广泛的材料界传播研究结果。