摘要
以铝和钇的水合物为反应前驱体,用乙二胺与水溶液为溶剂,可在温和条件下合成钇铝石榴石微粉。研究结果表明,乙二胺水溶液浓度、反应温度和保温时间是影响合成反应的重要因素。溶剂中水的存在不利于低温合成纯相YAG。当用纯乙二胺为溶剂时,可在180～220℃保温4～10h条件下合成近球形的YAG微粉,其颗粒尺寸为50～100nm,分散性好,这将有助于YAG陶瓷烧结致密化。
Yttrium aluminum garnet （YAG） powder can be synthesized by the mixed solvothermal method under milder conditions （180-220 ℃, 4 h; 220 ℃, 10 h） with inexpensive aluminum and yttrium hydroxides as the precursors, ethylenediamine and water solution as the solvent. The results show that the concentration of ethylenediamine and water solution, reaction temperature and the holding time are the main factors which affect the synthesis, and the existence of water is disadvantageous to the synthesis of pure YAG at low temperature. When the pure ethylenediamine was used as the solvent, the near-spherical with well-dispersed fine YAG grains were synthesized, and the size of the grains was 50-100 nm. The powder is the most desirable state for compacting and sintering of YAG ceramics.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2007年第A01期128-130,共3页
Rare Metal Materials and Engineering
基金
山东省自然科学基金项目(Y2003F02)
关键词
钇铝石榴石
溶剂热法
乙二胺
合成粉体
yttrium aluminum garnet
solvothermal method
ethylenediamine
synthesis powder
