Tailoring the Reaction Path: External Crack Initiation in Reactive Al/Ni Multilayers

Abstract

Reactive Al/Ni Multilayers

The image depicts a reactive multilayer system (RMS) envisioned for future chip-bonding applications. Individual layers of aluminum (Al) and nickel (Ni) are activated by a brief energy pulse, initiating a diffusion-driven reaction that reaches peak temperatures up to 1500 °C. In the course of this self-sustaining high-temperature synthesis, the two face-centered cubic metals transform into a body-centered cubic AlNi B2 phase. Further details can be found in article number 2302271 by Sebastian Matthes and co-workers.