水热法制备纳米ZrO_2粉体的条件  

Study on Nano ZrO_2 Powder Prepared by Hydrothermal Method

作　　者：李梦萱[1] 郭英奎[1] 范国峰[1] 白晓杰[1] 张宇[1] 

机构地区：[1]哈尔滨理工大学材料科学与工程学院,黑龙江哈尔滨150040

出　　处：《哈尔滨理工大学学报》2015年第5期69-73,共5页Journal of Harbin University of Science and Technology

基　　金：黑龙江省科技攻关项目(CC07A201)

摘　　要：采用ZrOCl_2·8H_2O、NH_3·H_2O为原料制备水热反应前驱物,以矿化剂(K_2O_3、KOH)溶液作为水热介质,PEG为分散剂,通过水热法合成纳米氧化锆粉末,利用XRD、SEM等分析测试手段对纳米ZrO_2粉末的物相组成、微观形貌、团聚现象等进行表征和分析.研究了PH值,水热反应温度,矿化剂含量,分散剂含量等对其物相组成、微观形貌、团聚现象的影响并提出相应解决方案.结果表明:在PH值为9、水热反应温度为230℃、分散剂(PEG)质量分数为1.5%、矿化剂(K_2O_3、KOH)比例K_(K_2O_3)/KOH=3:1的条件下,可制备出分散性良好,粉体粒径约为20 nm的纳米ZrO_2粉末.Nano-sized ZrO2 powders were synthesized by hydrothermal method using ZrOC12 · 8H2O and NH3 · H2O as hydrotheraml precursor raw materials and （K2O3, KOH）water/mineralizer solutions as hydrothermalme- dium;PEG as dispersant. The phase constitution , agglomerationand and physical properties of ZrO2 powders were tested by the X-ray diffraction （XRD）, Scanning electron microscope （SEM）. The effects of PH value ,hydrothermal reaction temperature and concentration of mineralizers and dispersant on the agglomeration of nano-sized ZrO2 pow- ders were investigated and some solutions were suggested accordingly. The result shows： well dispersed powder par- ticle size of about 20nm nano ZrO2 powder can be prepared by the solution which PH value of 9, the hydrothermal reaction temperature is 230 ℃, dispersing agent （PEG） content of 1.5%, mineralizer （K2O3, KOH） ratio KK2O3/KOH is 3： 1.

关 键 词：氧化锆 水热法 团聚 矿化剂 

分 类 号：TB44[一般工业技术]