采用锌蒸气直接氧化工艺制备四针状氧化锌晶须
Tetrapod Zinc Oxide Whisker Prepared by Direct Oxidation of Zinc Vapor
摘 要
以锌锭为原料, 采用锌蒸气直接氧化法制备出了四针状氧化锌晶须, 研究了蒸发温度及氧化温度对晶须形貌的影响。结果表明: 当蒸发温度为980～1 050 ℃时, 产物为四针状氧化锌晶须, 属六方纤锌矿晶体结构; 当蒸发温度为950 ℃时, 产物为非晶须, 呈颗粒状或片状, 氧化反应温度为900 ℃时, 获得形貌均匀的四针状氧化锌晶须, 降低反应温度至800 ℃, 四针状氧化锌晶须的单根针状体变长; 四针状氧化锌晶须按气-固方式进行生长, 单根针状体晶须按螺旋位错方式长大。
晶须
锌蒸气
zinc oxide
whisker
zinc vapor
Abstract
The tetrapod zinc oxide whisker was prepared by direct oxidation of zinc vapor using zinc ingot as raw material. The effects of the evaporation temperature and oxidation temperature on the morphology of whisker were investigated. The results indicate that in zinc evaporation temperature range of 980-1 050 ℃, product was the tetrapod zinc oxide whisker which showed hexagonal wurtzite crystal structure. While the product at 950 ℃ had a granular or flake morphology, but not whisker. At the oxidation reaction temperature of 900 ℃, the tetrapod zinc oxide whisker with uniform morphology could be obtained. Reduced the temperature to 800 ℃, single whisker of the tetrapod zinc oxide grew longer. The tetrapod zinc oxide whisker growth was controlled by a vapor-solid process, and the growth of single whisker was governed by the screw dislocation mechanism.
中图分类号 TF813 TQ37.1
所属栏目
基金项目 国家自然科学基金资助项目(50774014); 国家高技术研究发展计划资助项目(2008AA03Z514)
收稿日期 2010/12/9
修改稿日期 2011/9/8
网络出版日期
作者单位点击查看
备注揭晓武(1980-), 男, 江西南丰人, 工程师, 硕士。
引用该论文: JIE Xiao-wu,WANG Cheng-yan,LI Dun-fang,YIN Fei,CHEN Yong-qiang. Tetrapod Zinc Oxide Whisker Prepared by Direct Oxidation of Zinc Vapor[J]. Materials for mechancial engineering, 2011, 35(12): 85～88
揭晓武,王成彦,李敦钫,尹飞,陈永强. 采用锌蒸气直接氧化工艺制备四针状氧化锌晶须[J]. 机械工程材料, 2011, 35(12): 85～88
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【9】肖松文, 马荣骏, 肖骁, 等.氧化锌晶须的连续生产工艺方法及其装置:中国,CN1321798A[P]. 2000-04-30.
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【11】杜媛媛, 丘克强, 曾恒志, 等.真空度控氧制备四脚状纳米氧化锌晶须及影响因素[J]. 有色金属,2008,60(4):52-54.
【12】陈艺锋, 唐谟堂, 张保平, 等.气相氧化法制备氧化锌的结晶形貌[J]. 中国有色金属学报, 2004,14(3):504-508.
【13】HU J Q, LI Q, WONG N B,et al.Synthesis of uniform hexagonal prismatic ZnO whiskers[J]. Chem Mater, 2002,14(3):1216-1219.
【14】NEWTON M C, WARBURTON P A. ZnO tetrapod nanocrystals[J]. Materials Today,2007,10(5):50-54.
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【16】GAO P X, WANG Z L.Substrate atomic-termination-induced anisotropic growth of ZnO nanowires/nanorods by the VLS process[J]. J Phys Chem B,2004,108(23):7534-7537.
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【18】WANG Z L, KONG X Y, ZUO J M. Induced growth of asymmetric nanocantilever arrays on polar surfaces[J]. Physical Review Letters,2003,91(18):185502.1-185502.4.
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