Scholarlink

Reactive aluminum (Al) alloy powders are promising for advanced manufacturing, joining, and energetic applications, yet scalable routes that couple controlled reactivity with safe handling remain limited. While nanoscale Al powders ignite readily, their agglomeration, handling, and safety limit broad deployment. Here, we manufacture micron-sized Al-based powders produced by ultrasonic atomizationUltrasonic atomization (UA), targeting a balance of enhanced reactivity and process robustness. Binary systems (Al–Cu, Al–Si, Al–Mg) and pure Al were synthesized, and their morphology, phases present, thermal stability, and oxidation behaviorOxidation behavior were characterized using XRD, SEM, and DSC/TGA in an Ar+ \({\text {O}}_{2}\) environment. We show that alloy selection and UA-controlled microstructure can modify the native \({\text {Al}}_{2}{\text {O}}_{3}\) passivation, alter oxidation pathways, and shift thermal onsets/exotherms. The results establish a manufacturing-forward framework for designing micron-sized powders with tunable ignition/oxidation behaviorOxidation behavior.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Synthesis and Characterization of Ultrasonically Atomized Al-Based Alloy Powders for Tunable Thermal Reactivity

  • 会议论文

  • 发表日期：

    2026年

查看全文
  • Chetan Singh,
  • Ava Goglia,
  • Peter Mastracco,
  • Michael Flickinger,
  • Laszlo J. Kecskes,
  • Paulette Clancy,
  • Timothy P. Weihs

摘要

Reactive aluminum (Al) alloy powders are promising for advanced manufacturing, joining, and energetic applications, yet scalable routes that couple controlled reactivity with safe handling remain limited. While nanoscale Al powders ignite readily, their agglomeration, handling, and safety limit broad deployment. Here, we manufacture micron-sized Al-based powders produced by ultrasonic atomizationUltrasonic atomization (UA), targeting a balance of enhanced reactivity and process robustness. Binary systems (Al–Cu, Al–Si, Al–Mg) and pure Al were synthesized, and their morphology, phases present, thermal stability, and oxidation behaviorOxidation behavior were characterized using XRD, SEM, and DSC/TGA in an Ar+ \({\text {O}}_{2}\) environment. We show that alloy selection and UA-controlled microstructure can modify the native \({\text {Al}}_{2}{\text {O}}_{3}\) passivation, alter oxidation pathways, and shift thermal onsets/exotherms. The results establish a manufacturing-forward framework for designing micron-sized powders with tunable ignition/oxidation behaviorOxidation behavior.