Electric field induced grain refining in Al2O3 single crystal particles

被引：2
|
作者：
Liu, Jinling [1 ,2 ]
Gao, Yan [1 ,2 ]
Liu, Dianguang [3 ]
Wang, Yiguang [4 ]
机构：
[1] Southwest Jiaotong Univ, Sch Mech & Engn, State Key Lab Tract Power, Chengdu 610031, Sichuan, Peoples R China
[2] Southwest Jiaotong Univ, Appl Mech & Struct Safety Key Lab Sichuan Prov, Chengdu 610031, Sichuan, Peoples R China
[3] Southwest Jiaotong Univ, Key Lab Adv Technol Mat, Minist Educ, Chengdu 610031, Sichuan, Peoples R China
[4] Northwestern Polytech Univ, Sci & Technol Thermostruct Composite Mat Lab, Xian 710072, Shaanxi, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2018年 / 44卷 / 11期
基金：
中国国家自然科学基金;
关键词：
SPS; Al2O3; Soaking; Grain refining; Electric field; PLASMA; SPARK; CERAMICS; MICROSTRUCTURE; CONSOLIDATION; ZIRCONIA; PRESSURE; COMPACTS; GROWTH;
D O I：
10.1016/j.ceramint.2018.04.012
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The pre-soaking procedure was developed to identify the grain refining effects on Al2O3 ceramic during spark plasma sintering (SPS). The results showed the micrometer-size Al2O3 single crystal particles refined by the thermo-electric-mechanical mechanism. The large sized single crystal particles have more obvious grain refining and show more refined spots. A time dependent grain refining process has been identified after the powders were soaked longer at temperatures below the grain growth levels. Our work demonstrates a possible method to make nanostructured ceramic using SPS with pre-soaking process.
引用
收藏
页码：13414 / 13418
页数：5
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