高级检索
无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

脉冲电流烧结AlOOH的非均匀性

张东明1; 傅正义1; 郭景坤2   

  1. 1. 武汉理工大学材料复合新技术国家重点实验室, 武汉 430070; 2. 中国科学院上海硅酸盐研究所, 上海 200050
  • 收稿日期:2001-10-15 修回日期:2001-12-18 出版日期:2002-09-20 网络出版日期:2002-09-20

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

PDF (PC)

737

摘要： 采用相变方法系统研究了脉冲电流烧结AlOOH样品不同截面处相的状态.结果发现（1）样品上表面与下表面具有不同的相,表明样品中温度由高至低逐渐变化,（2）样品上表面较次上表面衍射峰弱.通过微波等离子轰击及热压烧结的实验模拟,发现样品上表面的XRD图与微波等离子轰击同样样品产生的XRD图极为相似.说明上表面的衍射峰与被离子轰击产生晶格缺陷有关.对形成这种上下表面结构不均匀性的原因进行了分析,并给子适当解释.

关键词: 非均匀性, 脉冲电流烧结, 高能粒子轰击

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

中图分类号: