Preparation of rod-like Al2O3 and Al2O3-ZrO2 ceramic composite powders in aqueous solution

被引：0
|
作者：
Jin Y. [1 ]
Huo D. [1 ]
Sun X. [1 ,2 ]
机构：
[1] School of Materials Science and Engineering, Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Liaoning, Shenyang
[2] Foshan Graduate School of Northeastern University, Guangdong, Foshan
来源：
Huo, Di (huod@atm.neu.edu.cn) | 1600年 / Chemical Industry Press Co., Ltd.卷 / 40期
关键词：
Al[!sub]2[!/sub] O[!sub]3[!/sub]-ZrO[!sub]2[!/sub] composites; diethylenetriaminepentaacetic acid(DTPA); low-temperature liquid phase synthesis; rod-like powders; α-Al[!sub]2[!/sub] O[!sub]3[!/sub;
D O I：
10.16085/j.issn.1000-6613.2021-0730
中图分类号：
学科分类号：
摘要：
Using diethylenetriaminepentaacetic acid (DTPA) as coordination agent, the micro/nano Al and Al-Zr fibrous precursors were synthesized by a simple liquid synthesis method, and further calcined to make rod-like α-Al2 O3 ceramic and Al2 O3-ZrO2 composite powders. The effects of mass ratio of DTPA to Al3+, reaction temperature and time on the morphology of ceramic powders were simultaneously studied. The powders were characterized by X-ray diffraction (XRD), thermal analysis (TG/DSC) and scanning electron microscope (SEM). The results show that higher mass ratio of DTPA to Al3+ along with longer reaction time are favorable for the preparation of fibrous Al and Al-Zr complex precursors with high aspect ratio. The optimized conditions to prepare the nanofibrous α-Al2 O3 and Al2 O3-ZrO2 precursors are controlled the mass ratio with m(DTPA)∶m(Al3+)=1.2∶1 at 60℃ for 5.5h. Correspondingly, rod-shaped α-Al2 O3 and Al2 O3-ZrO2 composite ceramic powders can be prepared by calcining these precursors. © 2021, Chemical Industry Press Co., Ltd.. All rights reserved.
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页码：309 / 314
页数：5
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