Microstructure Evaluation of Al Nanocomposite Foam Reinforced with SiO2 Nanoparticles Produced using Ultrasonic Technique

Subject Areas : journal of New Materials

a. صالحی ¹ , S.M زبرجد ² , A. باباخانی ³ , M.S. ابروی ⁴

1 - کارشناس ارشد مهندسی مواد، دانشکده مهندسی، دانشگاه فردوسی مشهد و عضو گروه پژوهشی مواد جهاد دانشگاهی مشهد.
2 - استاد گروه مهندسی مواد، دانشکده مهندسی، دانشگاه شیراز
3 - دانشیار گروه مهندسی مواد، دانشکده مهندسی، دانشگاه فردوسی مشهد
4 - دانشجوی کارشناسی ارشد مهندسی مواد، دانشکده مهندسی، دانشگاه شهید باهنر کرمان و عضو گروه پژوهشی مواد جهاد دانشگاهی مشهد.

Received: 2014-07-01 Accepted : 2014-07-01 Published : 2014-08-23

Keywords: ultrasonic technique, nanocomposite foam, microstructure evaluations, liquid drainage,

Abstract :

In this study, aluminum matrix nanocomposite reinforced with silicon dioxide nanoparticles (SiO2) were produced using ultrasonic technique and then using TiH₂ foaming agent fabrication of aluminum nanocomposite foams by melt rout process was carried out. Furthermore, microstructural analysis using optical microscope and scanning electron microscope to ensure the production of nanocomposite foam and evaluation the role of nanoparticles on morphology and cell wall thickness. Liquid drainage during foaming process was studied with computer softwares. The results revealed multifaceted structures of cells and appropriate distribution of nanoparticles in cell walls using microscopic evaluations. Also, it was observed that the thickness of cell walls and plateau borders area changes from foam surface.