Microstructure and mechanical properties of co-sputtered Al-SiC composites

Somya Singh, Shery Chang, C. Shashank Kaira, J. Kevin Baldwin, Nathan Mara, Nikhilesh Chawla

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5 Scopus citations

Abstract

Nanolaminates have gained much attention due to exceptional mechanical, optical, electrical and biological properties. In this work, we explore the microstructure and mechanical properties of Al-SiC co-sputtered monolayers having different compositions. Co-sputtering enables tailoring the microstructure at an atomic level and hence is a promising route to develop new generation of materials. These co-sputtered samples were characterized through FIB/SEM, TEM and XPS. They had an amorphous microstructure, with the exception of nanocrystalline Al aggregates present in one of the compositions. The micromechanical properties were studied through nanoindentation. We observed that the modulus and hardness of the co-sputtered samples were much higher than traditional Al/SiC nanolaminate samples having the same composition.

Original languageEnglish (US)
Article number107670
JournalMaterials and Design
Volume168
DOIs
StatePublished - Apr 15 2019

Keywords

  • Co-sputtered
  • Nanoindentation
  • Nanolaminates
  • Nanolayer
  • Thin film
  • Transmission electron microscopy

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