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Volume 37 Issue 1
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ZHANG Wang-nian, DENG Ning, PENG Li-li. Effect of CaCO3 addition on the properties of CaZrO3[J]. Powder Metallurgy Technology, 2019, 37(1): 46-49, 56. DOI: 10.19591/j.cnki.cn11-1974/tf.2019.01.008
Citation: ZHANG Wang-nian, DENG Ning, PENG Li-li. Effect of CaCO3 addition on the properties of CaZrO3[J]. Powder Metallurgy Technology, 2019, 37(1): 46-49, 56. DOI: 10.19591/j.cnki.cn11-1974/tf.2019.01.008
shu

Effect of CaCO3 addition on the properties of CaZrO3

  • School of Mechanical and Materials Engineering, Jiujiang University, Jiujiang 332005, China

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  • Corresponding author:

    ZHANG Wang-nian, E-mail: zwn2003@126.com

  • Received Date: April 26, 2018
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    • Abstract
  • Using analytical Ca(OH)2 and m-ZrO2 as the raw materials in the mole ratio of 1:1, the mixtures were added by CaCO3 powders in the different contents by mass, the calcium zirconate (CaZrO3) was synthesized by sintering the compacted samples at 1600 ℃ for 3 h. The effects of CaCO3 powders on sintering properties, phase composition, and microstructures of CaZrO3 were studied by apparent porosity density determinator, X-ray diffraction (XRD), scanning electron microscope (SEM), and X'Pert plus software. The results show that, without the addition of CaCO3, the sharking of CaZrO3 samples is 8.23%, the bulk density and apparent porosity of CaZrO3 sintered at 1600℃ are 3.40 g·cm-3 and 14.5%, respectively, and the grain size of CaZrO3 is only 4.08 μm. With the addition of CaCO3 in mass fraction of 8%, the sharking of CaZrO3 samples is 14.89%, the bulk density and apparent porosity of CaZrO3 sintered at 1600℃ are 4.02 g·cm-3 and 8.6%, respectively, and the grain size of CaZrO3 reaches to 5.45 μm. Thus, it can be seen that the CaCO3 addition in appropriate content can promote the sintering compactness and grain growth of CaZrO3.
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    • References (14)
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