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Reactive metallic microparticles for thermal joining applications

用于热连接应用的反应性金属微粒

基本信息

批准号：
376550608
负责人：
Professor Dr.-Ing. Michael Friedrich Zäh
金额：
--
依托单位：
Lehrstuhl für Betriebswissenschaften und Montagetechnik
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2017
资助国家：
德国
起止时间：
2016-12-31 至 2020-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/376550608?language=en
关键词：
Reactive metallic microparticles thermal joining

项目摘要

Reactive systems consisting of aluminium (Al) and nickel (Ni) have the unique ability to generate reaction temperatures of up to 1500 °C for a few milliseconds when exposed to an external energy source. This thermal reaction energy can be used to join via welding, bonding, or adhesion. These systems are commercially available only in the form of nanofoils. There are several disadvantageous characteristics of the nanofoils for joining processes, including the brittle nature of the material and the limitation of applications to planar geometries. To address these restrictions, the objective of this research project is to develop and characterize a new, more flexible format of applying the beneficial reaction properties of Al-Ni systems in joining applications, namely microparticles. To facilitate joining via Al-Ni particles in production engineering, a holistic approach is pursued. Detailed investigations on wet-chemical and mechanical synthesis of reactive microparticles provide the basis. In order to attain profound process understanding for thermal joining applications, reactive microparticles are characterized regarding their properties prior to, during, and after the activation of the reaction via microwave energy. The identified effects and interdependencies allow to draw conclusions about the two distinct synthesis routes and form the basis for the modelling of process behaviour.

由铝(Al)和镍(Ni)组成的反应体系在暴露于外部能源时具有独特的能力，可在几毫秒内产生高达1500°C的反应温度。这种热反应能可用于通过焊接、粘合或粘合进行连接。这些系统只能以纳米箔的形式在商业上获得。纳米箔在连接过程中有几个不利的特性，包括材料的脆性和对平面几何的应用限制。为了解决这些限制，本研究项目的目标是开发和表征一种新的、更灵活的形式，将Al-Ni系统的有益反应特性应用于连接应用，即微粒。为了便于在生产工程中通过Al-Ni颗粒连接，我们采取了整体的方法。对反应性微粒的湿法化学合成和机械合成进行了详细的研究，为研究提供了基础。为了更深入地了解热连接应用的过程，利用微波能对反应微粒在反应活化之前、过程中和之后的性质进行了表征。已确定的影响和相互依存性允许对两条不同的合成路线得出结论，并形成过程行为建模的基础。