W_(18)O_(49)亚微米棒阵列的制备及其生长机理  

Synthesis and growth mechanism of W_(18)O_(49) submicron-rod arrays

作　　者：刘新利[1] 张泉[1] 王世良[1,2] 王超[1] 贺跃辉[1] 

机构地区：[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

出　　处：《中国有色金属学报》2011年第5期1093-1098,共6页The Chinese Journal of Nonferrous Metals

基　　金：国家杰出青年科学基金资助项目(50825102);国家自然科学基金资助项目(50804057;50823006;50721003);中澳科技合作特别基金资助项目(50711120183);湖南省自然科学基金资助项目(08JJ3110)

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5~15μm,直径为200~800 nm,沿[010]方向生长。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.

关 键 词：氧化钨 亚微米棒 单晶 气相沉积 

分 类 号：TG146.411[一般工业技术—材料科学与工程]