Preparation of MgO-Y2O3 Composite Ceramic by Aqueous Gel Casting

被引：1
作者：
Liu, Liangwen [1 ]
Zhang, Mu [1 ,2 ]
Wang, Xing'an [3 ,4 ]
Sun, Xudong [1 ,2 ]
机构：
[1] Northeastern Univ, Minist Educ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Shenyang 110819, Liaoning, Peoples R China
[2] Northeastern Univ, Foshan Grad Sch, Foshan 528311, Peoples R China
[3] Dalian Univ, Coll Environm & Chem Engn, Dalian 116622, Peoples R China
[4] State Key Lab Light Alloy Casting Technol High En, Shenyang 110022, Peoples R China
来源：
JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS | 2021年 / 16卷 / 03期
基金：
中国国家自然科学基金;
关键词：
MgO Anti-Hydrolysis;   Gel Casting; MgO-Y2O3; Composite; Mechanical Properties; MAGNESIA; POWDER;
D O I：
10.1166/jno.2021.2940
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
MgO-Y2O3 composite ceramics were prepared by gel-casting technology. The surface of MgO powder is passivated with H3PO4 ethanol solution. The treated powder can be dispersed in water with a dispersant. The powder surface modification process was verified by pH, Zeta potentials, Fourier transmission infrared absorption spectroscopy (FT-IR), the absorbance of suspension and rheological properties. The obtained stable suspensions were gel cast, dried, and sintered at 1400 degrees C for 30 min under 35 MPa. As a comparison, the powder was compressed by die pressing and sintered at the same temperature and pressure. After sintering, the MgO-Y2O3 composite ceramic with a theoretical density of 97.29% can be prepared by aqueous gel casting process. The properties of MgO-Y2O3 composite ceramic fabricated by gel casting are better than die pressing.
引用
收藏
页码：444 / 451
页数：8
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