Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第21卷    第5期    总第146期    2011年5月

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文章编号:1004-0609(2011)05-1093-06
W18O49亚微米棒阵列的制备及其生长机理
刘新利1, 张 泉1, 王世良1, 2, 王 超1, 贺跃辉1

(1. 中南大学 粉末冶金国家重点实验室,长沙 410083;2. 中南大学物理科学与技术学院,长沙 410083)

摘 要: 以WO3粉末为原料,通过气相沉积法在钨片基底上制备出W18O49亚微米棒阵列。采用扫描电子显微镜(SEM)、透射电子显微镜(TEM)和X射线衍射分析(XRD)等对制备出的氧化钨亚微米棒阵列进行物相及形貌分析和表征。同时,提出了W18O49亚微米棒的生长机理,并讨论了生长温度对亚微米棒阵列密度和直径的影响。结果表明:制备出的W18O49氧化钨亚微米棒具有单晶单斜结构,长度为5~15 μm,直径为200~800 nm,沿[010]方向生长。

 

关键字: 氧化钨;亚微米棒;单晶;气相沉积

Synthesis and growth mechanism of W18O49 submicron-rod arrays
LIU Xin-li1, ZHANG Quan1, WANG Shi-liang1, 2, WANG Chao1, HE Yue-hui1

1. State Key laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;
2. School of Physics Science and Technology, Central South University, Changsha 410083, China

Abstract:The W18O49 submicron-rod arrays were grown on tungsten substrate by vapor deposition using WO3 powders as raw material. The morphology and structure of the resultant tungsten oxide submicron-rods were characterized by scanning electron microscopy, transmission electron microscopy and X-ray diffractometry. Finally, the growth mechanism of the submicron-rod was proposed, and the influence of the temperature on the density and diameter of the submicron-rod arrays was also investigated. The results show that the synthesized W18O49 submicron-rods are a single-crystalline structure with lengths of 5−15 μm and diameters of 200−800 nm.

 

Key words: tungsten oxide; submicron-rods; single crystal; vapor-deposition

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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