水热合成Sb掺杂改性的(K, Na) NbO3无铅压电陶瓷粉体
Hydrothermal Synthesis of Sb-doping (K, Na)(Nb, Sb)O3 Lead-free Piezoceramic Powders
以KOH、NaOH、Nb2O5、Sb2O3为原料，在240 癈下水热反应8小时成功合成了(K,Na)(Nb,Sb)O3无铅压电陶瓷粉体。运用X射线衍射(XRD)、拉曼光谱(Raman)、扫描电子显微镜(SEM)、透射电子显微镜 (TEM)及选区电子衍射(SAED)等研究了原始反应物中Sb的掺杂量即Sb/(Nb+Sb)的比值和K/(K+Na)的比值对产物的晶体结构和微观形貌的影响，试验结果表明Sb的加入有助于形成单相的(K, Na)(Nb, Sb)O3固溶体，并且得到的粉体的形貌为由多个小方块状的晶粒聚集生长而成的六角状；进行了在240 癈下水热反应不同时间(0~8小时)的试验，通过分析得到的各种粉体的晶体结构和微观形貌，研究了Sb掺杂情况下这种单相固溶体的反应过程，提出了可能的水热合成机理。
(K,Na)(Nb,Sb)O3 lead-free peizoceramic powders were hydrothermally synthesized successfully at 240篊 for 8 hours using the KOH, NaOH, Nb2O5 and Sb2O3 as raw materials. The effect of the Sb/(Nb+Sb) molar ratio and the K/(K+Na) in the starting solution on the crystal structure and micromorphology of the as-prepared powders was investigated by powder X-ray diffraction (XRD), raman spectra (Raman), scanning electron microscope (SEM), transmission electron microscopy (TEM) and select area electron diffraction (SAED) and the optimal raw material ratio was determined as follows: Sb/(Nb+Sb)=0.1, K/(K+Na)=0.75. Based on the crystal structure and micromorphology evolution of the samples prepared from the starting solution with the optimal composition confirmed above at different temperatures (120篊~240篊) for various time (0~8 hours), the reaction process was studied and a possible mechanism was proposed.
王会、柏林、朱孔军、苏礼奎、季宏丽、裘进浩
材料科学化学晶体学
水热法(K Na)(Nb Sb)O3无铅压电陶瓷粉体晶体结构微观形貌
Hydrothermal(K Na)(Nb Sb)O3Lead-free piezoelectric ceramicPowdersrystal structureMicromorphology
王会,柏林,朱孔军,苏礼奎,季宏丽,裘进浩.水热合成Sb掺杂改性的(K, Na) NbO3无铅压电陶瓷粉体[EB/OL].(2009-09-15)[2025-08-16].http://www.paper.edu.cn/releasepaper/content/200909-409.点此复制
评论