Departures from linearity in Arrhenius plots of vacancy concentration

Autor:	Frank Reginald Nunes Nabarro, L.M. Levinson
Rok vydání:	1967
Předmět:	Arrhenius equation Materials science General Engineering chemistry.chemical_element Thermodynamics Linearity Copper Arrhenius plot Gibbs free energy symbols.namesake Temperature and pressure chemistry Vacancy defect Lattice (order) symbols
Zdroj:	Acta Metallurgica. 15:785-790
ISSN:	0001-6160
DOI:	10.1016/0001-6160(67)90359-8
Popis:	Relations between intrinsic thermodynamic functions of lattice vacancies are derived and are shown to parallel the standard thermodynamic identities valid for reversible changes of a closed, one-component phase. The straight-line Arrhenius plot method of determining enthalpies and entropies of formation is critically examined. For gold, silver and copper the inaccuracy introduced by this procedure is shown to be somewhat less than present experimental errors. Estimates are made of ( ∂ 2 g ∂T 2 ) P and ( ∂ 2 g ∂P 2 ) T where g is the Gibbs free energy of formation of a lattice vacancy. The maximum expected temperature and pressure variations of the enthalpy of formation are also estimated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cc7d349b9cd171dc23084e55a02fd0b8 https://doi.org/10.1016/0001-6160(67)90359-8 Zobrazit plný text záznamu