Enhancing the densification of ceria ceramic at low temperature via the cold sintering assisted two-step sintering process

被引：26

作者：

Charoonsuk, Thitirat ^{[1
,2
]}

Sukkha, Usa ^{[2
,3
]}

Kolodiazhnyi, Taras ^{[4
]}

Vittayakorn, Naratip ^{[1
,2
,5
]}

机构：

[1] King Mongkuts Inst Technol Ladkrabang, Coll Nanotechnol, Electroceram Res Lab, Bangkok 10520, Thailand

[2] King Mongkuts Inst Technol Ladkrabang, Fac Sci, Adv Mat Res Unit, Bangkok 10520, Thailand

[3] King Mongkuts Inst Technol Ladkrabang, Chumphon Campus,17-1M 6 Pha Thiew Dist, Chumphon 86160, Thailand

[4] Natl Inst Mat Sci, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

[5] King Mongkuts Inst Technol Ladkrabang, Fac Sci, Dept Chem, Bangkok 10520, Thailand

来源：

CERAMICS INTERNATIONAL | 2018年 / 44卷

关键词：

Cold sintering; Densification; Ceria; Malonic acid; CEO2;

D O I：

10.1016/j.ceramint.2018.08.253

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 cold sintering process (CSP) in the transient aqueous environment of malonic acid is applied in this study to enhance the densification behavior of ceria ceramics at a significantly reduced sintering temperature. Dense ceria ceramics (> 98% relative density) could be achieved after CSP at 180 degrees C, followed by the sintering at 1100 degrees C/4 h. As expected, the CSP can improve the compaction of the particles before sintering, resulting in ceria ceramics with a fine microstructure of submicrometer scale of grain sizes. All samples show the single phase of cubic fluorite structure with no significant change of lattice parameter. Finally, electrical conductivity of CSP and conventionally sintered ceramics is investigated. This communication emphasizes the advantage of the CSP to reduce the sintering temperature without deterioration of the structure and properties of the final ceramics.

引用

页码：S54 / S57

页数：4

共 12 条

[1] Solubility of metal oxides in deep eutectic solvents based on choline chloride [J].