Laminated alumina/zirconia ceramic composites prepared by electrophoretic deposition |
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| Authors: | Hynek Hadraba Daniel Drdlik Zdenek Chlup Karel Maca Ivo Dlouhy Jaroslav Cihlar |
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| Affiliation: | 1. Institute of Physics of Materials, Academy of Sciences of the Czech Republic, Zizkova 513/22, 616 62 Brno, Czech Republic;2. Institute of Materials Science and Engineering, Brno University of Technology, Technicka 2896/2, 616 69 Brno, Czech Republic;1. MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter, School of Science, Xi''an Jiaotong University, Xi''an, 710049, Shaanxi, PR China;2. Materials Science Centre, School of Materials, University of Manchester, Grosvenor Street, Manchester, M13 9PL, UK;3. Department of Physics, University of the Punjab, Quaid-i-Azam Campus, Lahore-54590, Pakistan;4. Northwest Institute for Non-ferrous Metal Research, Xi''an, 710016, Shaanxi, PR China;1. Key Lab. for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering, Hebei University of Technology, 300132, Tianjin, China;2. Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology, Hebei University of Technology, 300130, Tianjin, China;3. School of Information Engineering, Hebei University of Technology, Tianjin, China |
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| Abstract: | The electrophoretic deposition of alumina and zirconia powders from isopropanolic suspension in the presence of monochloroacetic acid was studied in the constant-current regime. The different levels of electric current during deposition from 250 μA to 48 mA were used. The green density of the deposit depends on the current density and then on the particle velocity during deposition, reaching values from 58% to 61% according to the electric current used. It was found that the lower the green density of the green deposit, the larger the pores. The low green density led to low final fired density and subsequently to the low Vickers hardness HV5 ranging from 2000 to 1650 depending on electric current used. Based on these findings microlaminates having various thickness ratios to achieve different residual stress levels were prepared consisting of alternating layers of alumina and zirconia. |
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