Structure and mechanical properties of Cu-Ag nanocomposite films

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Metal-metal nanocomposites are studied to answer the questions of their formation mechanism, morphological development and related physical properties. The films were prepared by combinatorial co-deposition of Cu and Ag in a wide composition interval using thermal evaporation in high vacuum. Films close in composition to the eutectic have grain size below 10 nm and display strong <111> texture. Nanoindentation data show that Cu-Ag nanocomposite films have a maximum of hardness reaching 4 GPa around 20 at.% of Ag, four times greater than either of the building components. The composition dependence of the Young's modulus obeys the rule of mixtures, while their H/E ratio values are about 0.02 and practically constant in 10-60, at.% Ag content range.

Original languageEnglish
Pages (from-to)3931-3934
Number of pages4
JournalThin Solid Films
Volume516
Issue number12
DOIs
Publication statusPublished - Apr 30 2008

Keywords

  • Combinatorial co-deposition
  • Cu-Ag nanocomposite
  • Hardness
  • Texture

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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