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Phase stability and structural properties of Ni7 +/- [delta]S6 and Ni9S8 Heat capacity and thermodynamic properties of Ni7S6 at temperatures from 5 K to 970 K and of Ni9S8 from 5 K to 673 K
dc.contributor.authorStolen, Sveinen_US
dc.contributor.authorFjellvag, Helmeren_US
dc.contributor.authorGronvold, Fredriken_US
dc.contributor.authorSeim, Heleneen_US
dc.contributor.authorWestrum, Jr. , Edgar F.en_US
dc.date.accessioned2006-04-10T17:56:48Z
dc.date.available2006-04-10T17:56:48Z
dc.date.issued1994-09en_US
dc.identifier.citationStolen, Svein, Fjellvag, Helmer, Gronvold, Fredrik, Seim, Helene, Westrum, Jr., Edgar F. (1994/09)."Phase stability and structural properties of Ni7 +/- [delta]S6 and Ni9S8 Heat capacity and thermodynamic properties of Ni7S6 at temperatures from 5 K to 970 K and of Ni9S8 from 5 K to 673 K." The Journal of Chemical Thermodynamics 26(9): 987-1000. <http://hdl.handle.net/2027.42/31376>en_US
dc.identifier.urihttp://www.sciencedirect.com/science/article/B6WHM-45P0SF1-13/2/eec48645632ea4af4e461669a5e62f59en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/31376
dc.description.abstractTwo stable solid phases with composition in the range from (45 to 48) moles per cent of S exist for (nickel + sulfur): Ni9S8 which disproportionates to Ni1 - [delta]S and Ni7 +/- [delta]S6 above T = (709 +/- 5) K, and Ni7 +/- [delta]S6. The latter non-stoichiometric phase forms eutectoidally from Ni9S8 and Ni3S2 at T = (675 +/- 3) K. It is stable in a rather narrow temperature interval and disproportionates to Ni1 - [delta]S and Ni3 +/- [delta]S2 at T = (850 +/- 2) K. The phases are characterized structurally, and a revised phase diagram is presented. The heat capacity of a sample with composition Ni7S6 was determined over the temperature range T = 5 K to 970 K by adiabatic calorimetry. Effects from metastable modifications of the high-temperature phase were observed during thermal analysis, X-ray diffraction, and calorimetry on incompletely equilibrated samples. Thermodynamic-function values for Ni7S6 and Ni9S8 are presented.en_US
dc.format.extent423744 bytes
dc.format.extent3118 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.language.isoen_US
dc.publisherElsevieren_US
dc.titlePhase stability and structural properties of Ni7 +/- [delta]S6 and Ni9S8 Heat capacity and thermodynamic properties of Ni7S6 at temperatures from 5 K to 970 K and of Ni9S8 from 5 K to 673 Ken_US
dc.typeArticleen_US
dc.rights.robotsIndexNoFollowen_US
dc.subject.hlbsecondlevelMaterials Science and Engineeringen_US
dc.subject.hlbsecondlevelChemistryen_US
dc.subject.hlbsecondlevelChemical Engineeringen_US
dc.subject.hlbsecondlevelBiological Chemistryen_US
dc.subject.hlbtoplevelEngineeringen_US
dc.subject.hlbtoplevelScienceen_US
dc.subject.hlbtoplevelHealth Sciencesen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumDepartment of Chemistry, University of Oslo, P.O. Box 1033, Blindern, N-0315 Oslo, Norway and Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, U.S.A.en_US
dc.contributor.affiliationumDepartment of Chemistry, University of Oslo, P.O. Box 1033, Blindern, N-0315 Oslo, Norway and Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, U.S.A.en_US
dc.contributor.affiliationumDepartment of Chemistry, University of Oslo, P.O. Box 1033, Blindern, N-0315 Oslo, Norway and Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, U.S.A.en_US
dc.contributor.affiliationumDepartment of Chemistry, University of Oslo, P.O. Box 1033, Blindern, N-0315 Oslo, Norway and Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, U.S.A.en_US
dc.contributor.affiliationumDepartment of Chemistry, University of Oslo, P.O. Box 1033, Blindern, N-0315 Oslo, Norway and Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, U.S.A.en_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/31376/1/0000289.pdfen_US
dc.identifier.doihttp://dx.doi.org/10.1006/jcht.1994.1116en_US
dc.identifier.sourceThe Journal of Chemical Thermodynamicsen_US
dc.owningcollnameInterdisciplinary and Peer-Reviewed


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