2차원 층상구조를 갖는 소결조제와 이를 활용한 세륨산화물 소결성 향상
Sintering agents with 2-dimensional layered structure and the enhancement of sinterability of cerium oxide using them
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초록
산화물을 포함한 세라믹 재료의 물성은 소재 치밀도에 크게 영향을 받는다. 따라서 소재 치밀도를 높이기 위한다양한 노력들이 진행되어왔다. 이중 많이 사용되는 전략으로 재료 소결 시 소결조제를 첨가하는 것이다. 기존의 소결조제는 3차원 구조를 갖는 구형의 분말이었다. 본 연구에서는 차별화 전략으로 세륨산화물의 소결 밀도를 높이기 위해 2차원층상구조를 갖는 소결조제를 첨가하였다. 실제로 2차원 층상구조의 조결조제에 의해 소결밀도가 증가되는 것을 확인할 수있었다. 2차원 층상구조 소재로 초나노 두께(~1 nm)를 갖는 TiOx와 MnOx 나노쉬트가 이용되었다.
Abstract
The physical properties of ceramic materials including oxides are greatly influenced by the material density. Therefore, various efforts have been made to increase the material density. One of the most popular strategies is to use sintering additives in sintering materials. The conventional sintering additive was a spherical powder having a threedimensional structure. In this study, sintering additive with 2-dimensional (2D) layer structure was used to increase the sintering density of cerium oxide and its effect was confirmed. In this study, 1 nm-thick TiOx and MnOx nanosheets were used as sintering additives.
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