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Journal of Inorganic Materials

Journal of Inorganic Materials

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Heterogeneous Phases for Pulse Electric Current Sintering AlOOH

ZHANG Dong-Ming1; FU Zheng-Yi1; QUO Jing-Kun2   

  1. 1.State Key Lab of Advanced Technology for Materials Synthesis and Processing; Wuhan University of Technology; Wuhan 430070; China; 2.Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China
  • Received:2001-10-15 Revised:2001-12-18 Published:2002-09-20 Online:2002-09-20

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Abstract: The phases in different depth of a sample for pulse electric current sintering AlOOH was investigated by means
of XRD analysis. The results show that: (1) the phases in top surface are different with that in down surface which indicates that the temperature
decrease from top to down in the sample; (2) the peak of XRD in the top surface is lower than that in the next layer(0.3mm to top surface). Comparing
the results of microwave plasma bombardment and HP with pulse electric current sintering, it is found that the top surface of SPS sample has similar XRD patterns
with that of microwave plasma bombardment sample. So it is deduced that the top surface is bombarded by plasma, thus making the crystal structure distorted.
The reason for forming the heterogeneous phase in the sample was analyzed in this paper.

Key words: heterogeneous phases, pulse electric current sintering, high energy particles bombardment

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