采用模压成型法制备了TiO2电极.分别用扫描电镜(SEM)、X射线衍射仪(XRD)等测试手段分析了不同烧结温度下TiO2电极的形貌、物相.基于阿基米德定律和欧姆定律测定了不同烧结温度制备的TiO2电极的孔隙率和电阻率.分析结果表明,随烧结温度的升高,TiO2电极晶粒逐渐长大,柱状晶粒结晶程度越来越好,在1100℃和1200℃时平均粒径都在4μm左右;晶型随烧结温度的升高发生变化,温度高于1000℃时锐钛型TiO2全部转变为金红石型.孔隙率和电阻率随烧结温度的升高而减小,烧结温度越高,电极导电性能越好.1100℃和1200℃烧结后在1000～1050℃时电阻率约为0.14Ω·m并最终趋向于恒定.所制备的TiO2电极经熔盐电解实验后得到的金属钛含量高速99.69%.
参考文献
| [1] | 张喜燕;赵永庆;白晨光.钛合金及应用[M].北京:化学工业出版社,2005:15. |
| [2] | 莫畏;邓国珠;罗方承.钛冶金[M].北京:冶金工业出版社,1998:17. |
| [3] | Leyens C;Peters M.L Titanium and titanium alloys[M].Weinheim:Wiley-VCH Verlag GmbH & Co.KgaA,2003:1. |
| [4] | Suzuki Ryosuke O;Teranuma Koh .Ono KatsumshL Calciothermic reduction of titanium oxide and in-situ electrolysis in molten CaCl2[J].Metallurgical and Materials Transactions,2003,34(03):287. |
| [5] | 扈玫珑,白晨光,杜继红,邱贵宝,吕学伟,施瑞盟.熔盐电解制备钛及钛合金研究进展[J].钛工业进展,2009(03):7-12. |
| [6] | Plal U;Woolley D E;Kenney G B.Emerging SOM technology for the green synthesis of metals from oxide[J].JOM-Journal of the Minerals Metals and Materials Society,2001(10):32. |
| [7] | Chen G Z;Fray D J;Farthing T W .Cathodic deoxygenation of the alPha case on titanium and alloys in molten calciurn chloride[J].Metallurgical and Materials Transactions B:Process Metallurgy and Materials Processing Science,2001,32(06):1041. |
| [8] | Fray D J.Electrochemical processing using slags,fluxes and salt[A].,2004:6. |
| [9] | Long Run;Dai Ying;Huang Baibiao .Structural and electronic properties of iodine-doped anatase and futile TiO2[J].Computational Materials Science,2009,45(02):223. |
| [10] | Song SH.;Wang X.;Xiao P. .Effect of microstructural features on the electrical properties of TiO2[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2002(1):40-47. |
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