Journal of South China University of Technology (Natural Science Edition) ›› 2006, Vol. 34 ›› Issue (5): 90-93.

• Materials Science & Technology • Previous Articles     Next Articles

Efect of Microwave Heating and Doped ZrO2 on Phase Transformation from γ-Al2 O3→α-Al2 O3

Zhou Xi-ya  Bi Shu  Fan Bo   

  1. College of Materials Science and Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2005-03-28 Online:2006-05-25 Published:2006-05-25
  • Contact: 周曦亚(1966-)，男，副研究员，主要从事陶瓷及其复合材料的研究 E-mail:imxyzhou@scut.edu.cn
  • About author:周曦亚(1966-)，男，副研究员，主要从事陶瓷及其复合材料的研究

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Abstract:

The processing conditions r the phase transformation from γ-Al2 O3to α-Al2 O3caused by the common heating and microwave heating methods were analyzed by means of X—ray diffraction,with an enhancement of phase transform ation caused by microwave heating being revealed.The efect of doped ZrO2 on the phase transform ation was also studied.It is found that,compared with the common heating,microwave heating makes the phase transtbr-marion from γ-Al2 O3to α-Al2 O3happen at a lower temperature with higher speed,and that ZrO2 hinders the phase transform ation caused by microwave heating.

Key words: microwave, phase transformation, γ-Al2 O3, α-Al2 O3, zirconium oxide