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Title: The influence of temperature and grain boundary volume on the resistivity of nanocrystalline nickel

The thermal stability and modes of recrystallisation of nanocrystalline nickel has been observed through a conduction-based non-destructive test. Resistivity measurements have been utilised to quantify grain boundary volume fraction and microstructure. This observation makes clear the distinction of the factors that contribute to resistivity and demonstrates that these contributions are related to microstructure, either directly or in-directly. In static systems, the contribution of ordered grains and low-order grain boundary atomic arrangements in small grained material has been measured and correlated with resistivity. Measurements of in-situ resistivity conducted at high temperature gives changes with time which are related to grain growth, during heat treatment. This shows that resistivity can be used as a technique for observing the microstructure and grain growth of small grained material.
Authors:
;  [1] ;  [2]
  1. Interface Analysis Centre, School of Physics, University of Bristol, H. H. Wills Physics Laboratory, Tyndall Avenue, Bristol, BS8 1TL (United Kingdom)
  2. National Physical Laboratory, Hampton Rd, Teddington, Middlesex, TW11 0LW (United Kingdom)
Publication Date:
OSTI Identifier:
22492910
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 118; Journal Issue: 18; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CRYSTALS; GRAIN BOUNDARIES; GRAIN GROWTH; HEAT TREATMENTS; NANOSTRUCTURES; NICKEL; NONDESTRUCTIVE TESTING; RECRYSTALLIZATION; STABILITY; TEMPERATURE DEPENDENCE