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Sinterability of Y-Doped BaZrO3 with Micro- and Nano-CaO Additives and Its Interaction with Titanium Alloy

  • Juyun Kang
  • Guangyao Chen
  • Baobao Lan
  • Shihua Wang
  • Xionggang Lu
  • Chonghe LiEmail author
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

The effects of micro- and nano-CaO additive on the sinterability of Y-doped BaZrO3 and its interface reaction with titanium alloys were investigated. The 10 mol% micro- and nano-CaO is doped into BaZr0.97Y0.03O3 (BZY), respectively. The sinterability of BZY with micro- and nano-CaO was investigated by density analyzer, SEM and XRD. The relative density of BZY pellets with micro- and nano-CaO addition improved from 88% to 97.5% and 98% at 1750 °C for 6 h, respectively. XRD and SEM(BSE) show no secondary phase in the two sintered ceramics, which indicates that a single phase of cubic perovskite-type structure of Ca-modified BZY can be obtained. After melted titanium alloys, the erosion layer is 70 μm with nano-CaO addition, while a 310 μm erosion layer with micro-CaO addition. This shows that nano-CaO can be used as an appropriate sintering aid and can prevent the Y-doped BaZrO3 refractory from erosion.

Keywords

Sinterability Y-doped BaZrO3 CaO additive Interface reaction Titanium alloy 

Notes

Acknowledgements

The authors thank the National Natural Science Foundation of China (No.: 51574164, U1760109); Basic Major Research Program of Science and Technology Commission Foundation of Shanghai (No.: 14JC1491400). China Postdoctoral Science Foundation funded project (2018M632081).

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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Juyun Kang
    • 1
  • Guangyao Chen
    • 1
    • 2
  • Baobao Lan
    • 1
  • Shihua Wang
    • 3
  • Xionggang Lu
    • 1
    • 4
  • Chonghe Li
    • 1
    • 4
    Email author
  1. 1.State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of Advanced Ferro Metallurgy, School of Materials Science and EngineeringShanghai UniversityShanghaiChina
  2. 2.Materials Genome Institute of Shanghai UniversityShanghaiChina
  3. 3.Shanghai University LibraryShanghaiChina
  4. 4.Shanghai Special Casting Engineering Technology Research CenterShanghaiChina

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