Properties and consolidation of nanostructured TiO2 by pulsed current activated sintering
2
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
TiO2 powders were high-energy ball milled for various durations and consolidated using the pulsed current activated sintering (PCAS). The effect of milling on the sintering behavior and crystallite size TiO2 powders were evaluated. A nanostructured dense TiO2 compact with a relative density of up to 99% was readily obtained within 1 min. The ball milling effectively refined the crystallite structure of TiO2 powders and facilitated the subsequent consolidation. The sinter-onset temperature was reduced appreciably by the prior milling for 10 h. Accordingly, the relative density of TiO2 compact increased as the milling time increases. The microhardness and fracture toughness of sintered TiO2 increased as the density increases.
Abstract
TiO2 powders were high-energy ball milled for various durations and consolidated using the pulsed current activated sintering (PCAS). The effect of milling on the sintering behavior and crystallite size TiO2 powders were evaluated. A nanostructured dense TiO2 compact with a relative density of up to 99% was readily obtained within 1 min. The ball milling effectively refined the crystallite structure of TiO2 powders and facilitated the subsequent consolidation. The sinter-onset temperature was reduced appreciably by the prior milling for 10 h. Accordingly, the relative density of TiO2 compact increased as the milling time increases. The microhardness and fracture toughness of sintered TiO2 increased as the density increases.
참고문헌 (28)
- K. Iketani, , J. Phys. Chem. Solids, 64, pp.507~513 (2003)
- C.J. Barbé, , J. Am. Ceram. Soc, 80(3157), pp.3157~3171 (1997)
- C. Garzella, , Sens. Actuators B, 83, pp.230~237 (2002)
- D.J. Kim, , Mater. Lett, 57, pp.355~360 (2002)
- D. Qin, , Thermochim. Acta, 236, pp.205~216 (1994)
- H. Gleiter, , Nanostructured Materials, 6, pp.3~7 (1995)
- 윤준로, "Two Different Approaches to the Fabrication of Nano-Sized Particles in Thick Polyimide Films", Electronic Materials Letters, 4(4), pp.167~173 (2008), 대한금속·재료학회
- J. Karch, , Nature, 330, pp.556~558 (1987)
- A.M. George, , Nature, 413, pp.54~57 (2001)
- D. Hreniak, , Journal of Alloys and Compounds, 341, pp.183~186 (2002)
- C. Xu, , Sensors and Actuators B : Chemical, 3, pp.147~155 (1991)
- D.G. Lamas, , Journal of Magnetism and Magnetic Materials, 241, pp.207~213 (2002)
- 남창우, "Iron-Phosphate", Pt Nanostructured Electrodes for High-Efficiency Fuel Cells, 2008, pp.4(1), 5~7[DOI]
- E.S. Ahn, , Nano Letters, 1, pp.149~153 (2001)
- Z. Fang, , Int. J. of Refractory Met. & Hard Mater, 13, pp.297~302 (1995)
- 두송이, "고주파유도 가열에 의한 나노구조의 FeCrAlSi-Al_2O_3 복합재료의 합성 및 급속소결", 대한금속·재료학회지, 49(3), pp.231~236 (2011), 대한금속·재료학회
- Na-Ra Park, "Consolidation and mechanical properties of nanostructured (Mo,Ti)Si2 from mechanically activated powder by high frequency induction heated sintering", Journal of Ceramic Processing Research, 12(6), pp.660~663 (2011), 세라믹공정연구센터
- S.C. Liao, , Acta Mater, 45, pp.4027~4032 (1997)
- Z.Q. Jin, , Mater Sci Forum, 465-466, pp.93~97 (2004)
- V. Ivanov, , Key Eng Mater, 206-213, pp.377~381 (2002)
- 강현수, "Properties and Rapid Low-Temperature Consolidation of Nanocrystalline Fe-ZrO_2 Composite by Pulsed Current Activated Sintering", Metals and Materials International, 17(1), pp.57~62 (2011), 대한금속·재료학회
- 고인용, "Consolidation of a nanostructured Al2O3 reinforced Fe- Cr composite by rapid sintering and its mechanical properties", Journal of Ceramic Processing Research, 12(1), pp.70~73 (2011), 세라믹공정연구센터
- C. Suryanarayana, "X-ray Diffraction A Practical Approach" (1998), Plenum Press
- Z. Shen, , J. Am. Ceram. Soc, 85(1921), pp.1921~1927 (2002)
- J.E. Garay, , Appl. Phys. Lett, 85, pp.573~575 (2004)
- J.R. Friedman, , Intermetallics, 12, pp.589~597 (2004)
- J.E. Garay, , Acta. Mater, 51, pp.4487~4495 (2003)
- K. Niihara, , J. Mater. Sci. Lett, 1, pp.12~16 (1982)