In situ solid state electrochemical impedance spectroscopy of NiO scales
Liu, H. and Mojica-Calderon, C and Lyon, S.B. and Stack, M.M. (1999) In situ solid state electrochemical impedance spectroscopy of NiO scales. Solid State Ionics, 126 (3-4). pp. 363-372. ISSN 0167-2738 (https://doi.org/10.1016/S0167-2738(99)00236-2)
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NiO scales thermally grown on pure nickel were characterised by in situ solid state electrochemical impedance spectroscopy (EIS). Possible sources of error including the amplitude of the applied sine wave signals, the input impedance of FRA, as well as the residence time at the measuring temperature were examined. Specimens oxidised in air for 6, 24 and 120 h at 800 degrees C respectively were characterised over the temperature range 150-700 degrees C. The results suggest that only one time constant charge transport process is dominant in the NiO scales. The temperature dependence of the electrical conductivity shows an activation energy of about 0.6 eV which is consistent with measurements on hulk NiO pellets. The capacitance and dielectric constants of NiO scales also show a strong dependence of temperature.
ORCID iDs
Liu, H., Mojica-Calderon, C, Lyon, S.B. and Stack, M.M. ORCID: https://orcid.org/0000-0001-6535-6014;-
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Item type: Article ID code: 34374 Dates: DateEvent2 November 1999PublishedSubjects: Technology > Mechanical engineering and machinery
Technology > Chemical engineeringDepartment: Faculty of Engineering > Mechanical and Aerospace Engineering Depositing user: Pure Administrator Date deposited: 17 Oct 2011 13:04 Last modified: 11 Nov 2024 09:53 URI: https://strathprints.strath.ac.uk/id/eprint/34374