(1. 中南大學(xué) 粉末冶金國(guó)家重點(diǎn)實(shí)驗(yàn)室，長(zhǎng)沙 410083；2. 中南大學(xué)物理科學(xué)與技術(shù)學(xué)院，長(zhǎng)沙 410083)
摘 要: 以WO3粉末為原料，通過氣相沉積法在鎢片基底上制備出W18O49亞微米棒陣列。采用掃描電子顯微鏡(SEM)、透射電子顯微鏡(TEM)和X射線衍射分析(XRD)等對(duì)制備出的氧化鎢亞微米棒陣列進(jìn)行物相及形貌分析和表征。同時(shí)，提出了W18O49亞微米棒的生長(zhǎng)機(jī)理，并討論了生長(zhǎng)溫度對(duì)亞微米棒陣列密度和直徑的影響。結(jié)果表明：制備出的W18O49氧化鎢亞微米棒具有單晶單斜結(jié)構(gòu)，長(zhǎng)度為5~15 μm，直徑為200~800 nm，沿[010]方向生長(zhǎng)。
關(guān)鍵字: 氧化鎢；亞微米棒；單晶；氣相沉積
（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
