Characterization of nano-sized α-Al2O3 compacts prepared via modified θ-Al2O3@PEG technology

被引：1

作者：

Huang, Wen-Chiao ^{[1
]}

Huang, Pei-Wen ^{[1
]}

Huang, Chi-Yuen ^{[1
]}

Yen, Fu-Su ^{[1
]}

Huang, Cheng-Liang ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Resources Engn, 1 Univ Rd, Tainan 70101, Taiwan

来源：

CERAMICS INTERNATIONAL | 2022年 / 48卷 / 11期

关键词：

Alumina; Core-shell technology; Phase transformation; Green compact; ALPHA-ALUMINA; POLYCRYSTALLINE ALUMINA; PHASE-TRANSFORMATION; THETA-PHASE; NANOPARTICLES; CERAMICS; POWDERS;

D O I：

10.1016/j.ceramint.2022.02.134

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：

Modified (core) theta-Al2O3@ (shell) polyethylene glycol (PEG) technology was used to prepare alpha-Al2O3 green compacts composed of <100-nm alpha-Al2O3 crystallites using theta-Al2O3 as the starting material. The preparation process has two steps. In the first step, theta-Al2O3 compacts in which alumina crystallites were apart individually after the removal of PEG were made. In the second step, the theta-Al2O3 was transformed into alpha-Al2O3.The compact showed phase purity of >85% alpha-Al2O3 with crystallites sizes ranging from 50 to 100 nm and the compact density was >60% of the theoretical value.

引用

页码：15932 / 15938

页数：7

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