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ID:41219757
大小:1.42 MB
页数:25页
时间:2019-08-19
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1、PartIIMaterialsScienceandMetallurgy2005-06C1PhaseEquilibriaDrRVKumar6Lectures(1houreach)+1ExamplesClass(2hours)Synopsis:Lawsofthermodynamics;equilibrium;reversibility;enthalpy,entropyandfreeenergyThermochemistry;variationofenthalpy,entropyandfreeenergychangesforareactionwithtemperatur
2、e;equilibriumconstantofachemicalreactionThermodynamicsofgasesandcondensedphasesolutions;Roult’slaw,activityandactivitycoefficients;Henry’slawanddilutesolution;multicomponentsolutionandinteractioncoefficients;determinationofactivityThermodynamicsofmixingofsolutions;Chemicalpotential;pa
3、rtialmolarproperties;Gibbs-Duhemequation;commontangentconstructionandequilibriumphasediagramsCaseStudies:Applicationofthermodynamicconceptsto(a)combustionreactions(b)gasesinmetalsand(c)aluminothermicreductionTextBooksandWebLinks:1.IntroductiontothethermodynamicsofMaterials-DRGaskell(T
4、aylor&Francis)2.ChemicalMetallurgy-JJMore(ButterworthHeinemann)3.DepartmentofMaterialsScience&MetallurgyWebpagelink:www.msm.cam.ac.uk/Teaching/andfollowthelinksthroughUndergraduateTeaching–OtherResourcesandLink–MATTER–Selectionofon-lineresourcesforMaterialsScience–steeluniversity.org(
5、arangeofrelevanttopicsunderThermodynamicsandKineticsavailablefromSiteContents)4.ExternallinkforInteractiveEllinghamdiagram:http://www.engr.sjsu.edu/ellingham/5.DepartmentofMaterialsScience&MetallurgyWebpagelinkforcoursematerialforthiscourse:www.msm.cam.ac.uk/Teaching/PtIIAB/C1.pdf1Lec
6、ture1C1(RVK)Inthiscoursewewillbeprimarilyconcernedwiththeapplicationofthermodynamicprinciplestosystemsundergoingchemicalreactions.Asystemmayconsistofoneormorephasesandeachphaseismadeupofoneormorecomponents(whicharechemicalspeciesoffixedcompositions).Asystemisinanequilibriumstatewhente
7、mperature,pressureandchemicalactivitygradientsareabsent,i.e.thesystemisinthermal,mechanicalandchemicalequilibrium.Bychangingoneormoreoftheabovevariables,reactionscanbeinducedandanewequilibriumstatemaybeachieved.Phasediagramsaregraphicalmeansbywhichphaseequilibriumwithinasystemisrepres
8、ented
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