Journal of Materials Science

, Volume 44, Issue 11, pp 2938–2944 | Cite as

Improvement of alkali corrosion resistance of mullite ceramics at high temperature by depositing Ca0.3Mg0.2Zr2(PO4)3 coating

  • Xiaozhen ZhangEmail author
  • Jianer Zhou
  • Jiandong Wang
  • Yuahua Jiang


Ca0.3Mg0.2Zr2(PO4)3 coating was deposited on the mullite ceramic to improve its alkali corrosion resistance at high temperatures, using sol–gel method and dip-coating technique. The phase composition and microstructure of the coating were characterized by X-ray diffraction and scanning electron microscopy (SEM). Results show that homogeneous, dense and single-phase Ca0.3Mg0.2Zr2(PO4)3 coating was successfully deposited on mullite ceramics. SEM microstructural examination revealed the excellent bonding between Ca0.3Mg0.2Zr2(PO4)3 coating and mullite ceramics. The effectiveness of the prepared coating to improve the alkali corrosion resistance of mullite ceramics was assessed through the measurements of mass loss and flexural strength degradation after 96 h and longer exposure time at alkali corrosion condition at 1000 °C. A significant enhancement of the alkali corrosion resistance for Ca0.3Mg0.2Zr2(PO4)3-coated mullite samples was observed. Therefore, the effectiveness of the Ca0.3Mg0.2Zr2(PO4)3 material as protection coating for mullite ceramic is confirmed.


Contact Angle Strength Degradation Uncoated Sample Zirconium Oxychloride Triethyl Phosphate 
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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Xiaozhen Zhang
    • 1
    Email author
  • Jianer Zhou
    • 1
  • Jiandong Wang
    • 1
  • Yuahua Jiang
    • 1
  1. 1.National Research Center for Ceramic Engineering and Technology, School of Material Science and EngineeringJingdezhen Ceramic Institute (JCI)JingdezhenPeople’s Republic of China

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