nO2n-1，4＜n＜10）低價(jià)鈦氧化物的方法，研究了還原溫度和還原時(shí)間對(duì)還原產(chǎn)物的物相、電阻率的影響。結(jié)果表明，提高還原溫度和延長(zhǎng)還原時(shí)間有利于將TiO2還原為Magnéli相TinO2n-1。將Magnéli相TinO2n-1 (n=4，5) 粉末在1350 ℃下干燥20 min，通過掃描電子顯微鏡觀察，其粒徑為0.5~8 μm。在還原溫度為1350 ℃時(shí)，還原產(chǎn)物的電阻率隨還原時(shí)間的延長(zhǎng)而顯著降低。在1350 ℃下還原50 min的產(chǎn)物的電阻率最小，為79.3 Ω?cm，其物相組成幾乎全部為Ti3O5。;A novel method for fabricating Magnéli phase (MP) TinO2n-1 (4<n<10), carbothermal reduction sieving, in air atmosphere was introduced. The influence of the reduction temperature and reduction time on the phase structure and resistivity of reduction product was investigated. The results show that increasing the reduction temperature and prolonging the reduction time are beneficial for the reduction of TiO2 to MP TinO2n-1. MP TinO2n-1 (n=4, 5) powder was obtained after reduction at 1350 °C for 20 min, and its particle size is 0.5~8 μm according to results of scanning electron microscopy analysis. Resistivity of the reduction product is decreased significantly with prolonging the reduction time at 1350 °C. The minimum resistivity of 79.3 Ω?cm is achieved for the product after reduction at 1350 °C for 50 min, and the phase composition is mainly Ti3O5."/>
n O2n-1;電阻率;TiO2;相變;carbothermal reduction;sieving;Magnéli phase Ti n O2n-1;resistivity;TiO2;phase transformation"/>