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Yuan Zhengxi. Preparation of CeO2-coated ZrO2 Powder by Suspension Drying[J]. Journal of University of Electronic Science and Technology of China, 2000, 29(6): 613-616.
Citation: Yuan Zhengxi. Preparation of CeO2-coated ZrO2 Powder by Suspension Drying[J]. Journal of University of Electronic Science and Technology of China, 2000, 29(6): 613-616.
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Preparation of CeO2-coated ZrO2 Powder by Suspension Drying

  • 1.

    Institute of Information Materials Engineering,UEST of China Chengdu 610054

  • Received Date: 2000-04-03
  • Publish Date: 2000-12-15
  • A novel technique is described for the preparation of Al2O3-doped CeO2-coated ZrO2 nanopowders from a solution of aluminium nitrate and cerium nitrate in a mixed alcohol/water suspension with monoclinic zirconia powder. Drying of the suspension and subsequent calcination of the powder at 800℃ results in Al2O3-doped CeO2-coated monoclinic ZrO2 nanopowder with a grain size below 100 nm. That fabricated powder can be pressureless sintered in air at 1 450℃ into dense Ce-TZP materials with an excellent fracture toughness of 11 MPa m1/2 and a Vickers hardness of 750 kg/mm2 (HV30). The microstructure and mechanical properties of the Al2O3-doped CeO2-coated powder based TZP are compared with those of a Ce-TZP obtained from commercially available co-precipitated powder.
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  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Preparation of CeO2-coated ZrO2 Powder by Suspension Drying

  • 1. Institute of Information Materials Engineering,UEST of China Chengdu 610054
  • Received Date: 2000-04-03
  • Publish Date: 2000-12-15

Abstract: A novel technique is described for the preparation of Al2O3-doped CeO2-coated ZrO2 nanopowders from a solution of aluminium nitrate and cerium nitrate in a mixed alcohol/water suspension with monoclinic zirconia powder. Drying of the suspension and subsequent calcination of the powder at 800℃ results in Al2O3-doped CeO2-coated monoclinic ZrO2 nanopowder with a grain size below 100 nm. That fabricated powder can be pressureless sintered in air at 1 450℃ into dense Ce-TZP materials with an excellent fracture toughness of 11 MPa m1/2 and a Vickers hardness of 750 kg/mm2 (HV30). The microstructure and mechanical properties of the Al2O3-doped CeO2-coated powder based TZP are compared with those of a Ce-TZP obtained from commercially available co-precipitated powder.

Yuan Zhengxi. Preparation of CeO2-coated ZrO2 Powder by Suspension Drying[J]. Journal of University of Electronic Science and Technology of China, 2000, 29(6): 613-616.
Citation: Yuan Zhengxi. Preparation of CeO2-coated ZrO2 Powder by Suspension Drying[J]. Journal of University of Electronic Science and Technology of China, 2000, 29(6): 613-616.
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