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Title: Dependence of the mechanical behavior of alloys on their electron work function—An alternative parameter for materials design

In this article, we demonstrate that the electron work function (EWF) as an intrinsic parameter can provide information or clues in a simple or straightforward way for material design, modification, and development. A higher work function of a material represents a more stable electronic state, which consequently generates a higher resistance to any attempt of changing the electronic state and other corresponding states, e.g., changes in structure or microstructure caused by mechanical and electrochemical actions. Using Cu-Ni alloy as an example, we demonstrate the correlation between the EWF and Young's modulus of the material as well as its hardness. The properties of a material can be modified using elements with appropriate work functions. This is also applicable for tailoring inter-phase boundaries or interfaces.
Authors:
; ;  [1]
  1. Department of Chemical and Materials Engineering, University of Alberta, Edmonton T6G 2V4 (Canada)
Publication Date:
OSTI Identifier:
22253256
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 26; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; DESIGN; ELECTROCHEMISTRY; ELECTRONS; HARDNESS; INTERFACES; MATERIALS; MICROSTRUCTURE; WORK FUNCTIONS; YOUNG MODULUS