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Effect of SiO2 Content on Sintering Characteristics of YSZ in High Temperature Ageing
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State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University

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    Abstract:

    The effect of SiO2 on the sintering rate of YSZ ceramics as well as on the morphology and properties of YSZ during sintering are studied. In this work, YSZ samples of 10% pores with different SiO2 content were prepared. The sample microstructures are characterized by scanning electron microscopy (SEM). The sample porosity was obtained by the Archimedes method. The phase composition, mechanical and thermal properties of samples after sintering were measured. It is found that the introduction of 0.3wt% SiO2 will make the YSZ grain size larger and the porosity decrease significantly. The hardness, Young's modulus and thermal conductivity of samples change faster due to the introduction of SiO2.

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[Wang Ziyuan, Zhao Meng, Yang Jun, Li Zongyuan, Wang Min, Pan Wei. Effect of SiO2 Content on Sintering Characteristics of YSZ in High Temperature Ageing[J]. Rare Metal Materials and Engineering,2020,49(2):688~694.]
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History
  • Received:April 26,2019
  • Revised:May 08,2019
  • Adopted:October 23,2019
  • Online: March 12,2020
  • Published: