标题：Yttrium aluminum garnet nanoparticles synthesized by nitrate decomposition and their low temperature densification behavior
作者：Sang, Yuanhua; Liu, Hong; Lv, Yaohui; Wang, Jiyang; Chen, Ting; Liu, Duo; Zhang, Xiaolin; Qin, Haiming; Wang, Xiaoning; Boughton, Ro 更多 作者机构：[Sang, Yuanhua; Liu, Hong; Lv, Yaohui; Wang, Jiyang; Chen, Ting; Liu, Duo; Zhang, Xiaolin; Qin, Haiming; Wang, Xiaoning] Shandong Univ, State Key Lab 更多
通讯作者地址：[Liu, H]Shandong Univ, State Key Lab Crystal Mat, 27 Shanda Nanlu, Jinan 250100, Peoples R China.
来源：JOURNAL OF ALLOYS AND COMPOUNDS
关键词：Oxide materials; Ceramics; Chemical synthesis; Scanning electron; microscopy
摘要：A simple method for synthesizing yttrium aluminum garnet (YAG) powder based on a mixed precursor solution of yttrium nitrate and aluminum nitrate is proposed. At a temperature below 850 degrees C, the pure YAG phase can be obtained by simply calcining the precursors in air. Uniform granular YAG nanoparticles of about 20-30 nm in diameter are obtained. The YAG granules can be densified to become a nanoceramic fraction by calcination at 900 degrees C, and can be sintered at 1000 degrees C to become a very dense ceramic with well crystallized grains of diameter from 1 mu m to 2 mu m. This result indicates that YAG nanoceramics can be obtained at 900 degrees C without a stringent sintering process, and that transparent YAG ceramics may be obtained below 1000 degrees C by this simple and novel synthesis method. Based on X-ray diffraction (XRD), thermal gravimetric analysis (TGA), Fourier transform infrared (FTIR), and scanning electron microscopy a chemical mechanism for the densification of the ceramic is proposed. analysis, (C) 2009 Elsevier B.V. All rights reserved.