Experimental Study on Phase Transformation of TiO2 Induced by High Energy Milling
-
摘要: 采用高能球磨法处理二氧化钛(TiO2)与双氰胺粉末混合物,对不同球磨时间和球磨转速条件下TiO2的相变进行了研究。利用X射线衍射仪对回收产物的相组成进行表征。结果表明,在700 r/min的高速球磨条件下,TiO2发生了由锐钛矿相向金红石相和Srilankite高压相的转变,随着球磨时间的增加,Srilankite高压相和金红石相的含量逐步增加并逐渐趋于平衡;进一步提高球磨转速至1 000 r/min,锐钛矿相向Srilankite高压相的转变占主导,更易于形成Srilankite高压相,Srilankite高压相的质量分数可增加至47.8%。Abstract: The mixture of TiO2 and dicyandiamide powder is processed by high energy milling at different milling speed and milling time. The structure and phase composition of the recovered samples are determined by X-ray diffraction (XRD). The results show that anatase transforms to rutile and srilankite appears at milling speed of 700 r/min. With milling time increasing, srilankite high-pressure phase content increases and gradually approaches a constant value. When the milling speed is raised to 1 000 r/min, the transformation of anatase to srilankite is dominant, and the mass fraction of srilankite high-pressure phase is increased greatly to 47.8%.
-
Key words:
- titania /
- high energy milling /
- phase transformation /
- anatase /
- rutile /
- srilankite high-pressure phase
-
Mammone J F, Nicol M, Sharma S K. Raman spectra of TiO2-Ⅱ, TiO2-Ⅲ, SnO2, and GeO2 at high pressure [J]. J Phys Chem Solids, 1981, 42(5): 379-384. Ohsaka T, Yamaoka S, Shimomura O. Effect of hydrostatic pressure on the Raman spectrum of anatase (TiO2) [J]. Solid State Commun, 1979, 30(6): 345-347. Malcolm N, Fong M Y. Raman spectrum and polymorphism of titanium dioxide at high pressures [J]. J Chem Phys, 1971, 54(7): 3167-3170. Haines J, Leger J M. X-ray diffraction study of TiO2 up to 49 GPa [J]. Physica B, 1993, 192: 233-237. Sato H, Endo S, Sugiyama M, et al. Baddeleyite-type high-pressure phase of TiO2 [J]. Science, 1991, 251: 786-788. Dubrovinsky L S, Dubrovinskaia N A, Swamy V, et al. The hardest known oxide [J]. Nature, 2001, 410: 653-654. Fujishima A, Rao T N, Tryk A D. Titanium dioxide photocatalysis [J]. J Photochem Photobiol C, 2000, 1(1): 1-21. Gerward L, Olsen J S. Post-rutile high-pressure phases in TiO2 [J]. J Appl Cryst, 1997, 30: 259-264. Lagarec K, Desgreniers S. Raman study of single crystalanatase TiO2 up to 70 GPa [J]. Solid State Commun, 1995, 94(7): 519-524. Minshall F S. Investigation of polymorphic transition in iron at 130 kbar [J]. Phys Rev, 1955, 98: 271. DeCarli P S, Jamieson J C. Formation of diamond by explosive shock [J]. Science, 1961, 133: 1821-1822. Tan H, Han J W, Wang X J, et al. Explosive shock synthesis of wurtzite type boron nitride [J]. Chinese Journal of High Pressure Physics, 1991, 5(4): 241-253. (in Chinese) 谭华, 韩钧万, 王晓江, 等. 炸药爆炸冲击波合成纤锌矿型氮化硼 [J]. 高压物理学报, 1991, 5(4): 241-253. Benjamin J S. Dispersion strengthened superalloys by mechanical alloying [J]. Metall Mater Trans B, 1970, 1(10): 2943-2951. Benjamin J S. Mechanical alloying [J]. Sci Am, 1976, 234: 40-48. Shingu P H, Huang B, Nishitani S R, et al. Nano-meter order cystalline structures Al2Fe alloys produced by mechanical alloyings [J]. Suppl Trans Japan Inst Metals, 1988, 29(3): 3-10. Ren R M, Yang Z G, Shaw L L. Polymorphic transformation and powder characteristics of TiO2 during high energy milling [J]. J Mater Sci, 2000, 35(23): 6015-6026. Wu Q S, Gao S J, Zhang S M, et al. Polymorphic transformation of anatase TiO2 caused by high-energy ball milling [J]. Materials Science and Technology, 2002, 10(4): 382-386. (in Chinese) 吴其胜, 高树军, 张少明, 等. 高能球磨锐钛矿型TiO2晶型转变的研究 [J]. 材料科学与工艺, 2002, 10(4): 382-386. Liu J J, Qin W, Zuo S L, et al. Solvothermal-induced phase transition and visible photocatalytic activity of nitrogen-dope dtitania [J]. J Hazard Mater, 2009, 163(1): 273-278. Linde R K, DeCarli P S. Polymorphic behavior of titania under dynamic loading [J]. J Chem Phys, 1969, 50(1): 319-325. Maurice D R, Courtney T H. The physics of mechanical alloying: A first report [J]. Metall Mater Trans A, 1990, 21(1): 289-303. Murray J L, Wriedt H A. The O-Ti (oxygen-titanium) system[J]. J Phase Equilibria, 1987, 8(2): 148-165.
点击查看大图
计量
- 文章访问数: 6619
- HTML全文浏览量: 329
- PDF下载量: 679