Nanoindentation Measurements for B2O3-Y-TZP Electrolyte Used in HT-SOFC

International Conference on Materials Engineering and Science

Al Attar, A.F.^1 ; Farid, S.B.H.^1 ; Hashim, F.A.^1 ; Eshraghi, M.J.^2

Department of Materials Engineering, University of Technology, Baghdad, Iraq^1

Materials and Energy Research Center (MERC), Karaj, Iran^2

关键词: Grain size;    High temperature;    Mechanical characterizations;    Nano-indentation measurements;    Nanoindentation analysis;    Phase identification;    Sintered specimen;    Yttria stabilized tetragonal zirconias;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/454/1/012039/pdf
DOI  :  10.1088/1757-899X/454/1/012039

来源: IOP

【 摘 要 】

Nanoindentation analysis used to evaluate mechanical characterizations including elastic modulus, yield stress, hardness, and fracture strength of doping B2O3 in yttria stabilized tetragonal zirconia (B2O3-Y-TZP) to use as electrolyte in solid oxide fuel cell worked at high temperature (HTSOFC). X-ray diffraction (XRD) one of rapid analytical technique primarily used for phase identification and microstructure of sintered electrolyte. Scanning electron microscopy (SEM) have been utilized for morphology studies of the sintered specimens. B2O3 doped Y-TZP specimens obtained elastic modulus(E) 6.42E+10 Pa with yield stress σ (N/m2) as much as 1.63E+07, hardness as much as 465kg/mm2, and fracture strength as much as 3.1393E+17 MPa.M1/2. While crystallite size of B2O3 doped Y-TZP estimated to be 137 nm, and the grain size of B2O3 doped Y-TZP was estimated to be 426 nm.