Dense YMn(2)O(5) Ceramics Prepared by Spark Plasma Sintering

作者：Gao Yuan; Wu Yong Jun^*; Chen Xiang Ming; Cheng Ji Peng; Lin Yi Qi; Ma Yan

来源：Journal of the American Ceramic Society, 2008, 91(11): 3728-3730.

DOI：10.1111/j.1551-2916.2008.02671.x

Dense multiferroic YMn(2)O(5) ceramics with a single orthorhombic phase are quite difficult to prepare because the orthorhombic phase decomposes at about 1180 degrees C. In this study, spark plasma sintering (SPS) was investigated to synthesize YMn(2)O(5) ceramics. The sample sintered at 900 degrees C for 5 min by SPS consisted of the main orthorhombic YMn(2)O(5) phase and a small amount of hexagonal YMnO(3) phase and Mn(3)O(4). After heat treatment at 1100 degrees C for 9 h, YMn(2)O(5) ceramics in a single orthorhombic phase with a relative density of 94% were obtained. The results suggested that SPS is a promising process for preparing ceramics whose optimal sintering temperatures are higher than their decomposition temperatures.

• 出版日期2008-11
• 单位浙江大学