[1]杨志琴,杨飞,刘荣.温度对纳米氧化锆粉体结构的影响[J].南京师范大学学报(工程技术版),2010,10(01):049-53.
 Yang Zhiqin,Yang Fei,Liu Rong.The Influence of Temperature on Zirconia Nanoparticles[J].Journal of Nanjing Normal University(Engineering and Technology),2010,10(01):049-53.
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温度对纳米氧化锆粉体结构的影响
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南京师范大学学报(工程技术版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
10卷
期数:
2010年01期
页码:
049-53
栏目:
出版日期:
2010-01-01

文章信息/Info

Title:
The Influence of Temperature on Zirconia Nanoparticles
作者:
杨志琴 杨飞 刘荣
南京师范大学动力工程学院, 江苏南京210042
Author(s):
Yang ZhiqinYang FeiLiu Rong
School of Power Engineering,Nanjing Normal University,Nanjing 210042,China
关键词:
共沉淀法 纳米氧化锆 四方相氧化锆
Keywords:
co-precip itation me thod zircon ia nanopartic les ZrO2
分类号:
TB383.1
摘要:
以ZrOCl 2.8H2O为原料,加入3%的Y2O 3为稳定剂,采用湿化学法制备出稳定的纳米ZrO 2粉体,分别在200℃、400℃、600℃、800℃和900℃下煅烧,研究煅烧温度对纳米ZrO2粉体的物相组成、粒径大小、比表面积及粉体分布特征的影响,并讨论了分散时间对纳米粉体团聚现象的影响.研究结果表明:当温度从200℃升至900℃,粉体经历了由无定形向四方相、单斜相晶体的转变,对应相变温度分别是400℃、800℃;随着煅烧温度的不断升高,ZrO2粉体的粒径不断增大,比表面积不断减小;分散时间的延长可以减少纳米ZrO 2粉体中颗粒之间的软团聚,改善颗粒分布的均匀性.
Abstract:
Using ZrOC l2 8H2O as them ain raw m ater ia,l w ith the added 3% o f Y2O3 as stabilizing agent, the nanome ter- size ZrO2 pow derwas prepared by the co-prec ip itation m ethods. TheZrO2powderw ere ca lcinated a t 200℃ , 400℃ , 600℃ , 800℃ and 900℃ , respectively to study the influence of tem pera ture on phase com po sition, gra in size, spec ific surface area and d istribution cha racte ristics; then the ZrO2 powderwas d ispersed at var ious tim e to observe the agg lom era ted states. It was found that severa l phase transfo rm ation took placew hen heated from 200℃ to 900℃ . A t 400℃ , the ZrO2 powder transfo rm ed from am orphous to tetragona;l A t 800℃ , monoclin ic phase was found. As the temperature r ising, the gra in size of ZrO2 powder increased, and the spec ific surface a rea decreased. M ore d ispersing tim em ade the agg lom erated substance decreasing and the partic lew e l-l distributed

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备注/Memo

备注/Memo:
基金项目: 江苏省教育厅基金( 2008112TS J0125) . 通讯联系人: 刘荣, 博士, 副教授, 研究方向: 材料制备及加工工艺. E-mail:liu rongle@ 163. com
更新日期/Last Update: 2013-04-02