Effect of milling parameters on the phase transformations and morphology changes of B4C-SiC nanocomposite powder in situ synthesized by MAVCS method
1
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
In this study, in situ synthesis of B4C-SiC nanocomposite powder (1 : 1 molar ratio) was performed by mechanically activatedvolume combustion synthesis (MAVCS) method. Raw materials were included Si, C, B2O3 and Mg. Milling process was usedto mechanically activate the raw materials. Synthesis of prepared samples was occurred in a tube furnace under argonatmosphere at 1000 oC. The milling parameters were examined to optimize the activating of the raw materials process. Synthesized samples after mechanical activation with milling parameters of 300 rpm rotation speed, 20 to 1 ball to powderratio and milling time of 9 and 12 h had best phase and morphology conditions. Average crystallite size of B4C and SiCcompounds were calculated less than 15 nm for these two samples. Transmission electron microscopy (TEM) analysis of thesetwo samples approved their formation from the grains in nanometers scale. The TEM analysis showed the sample with 12 hof milling the raw materials has formed from more uniform grains than the sample with 9 h of milling the raw materials. Particle size analysis showed more than 99% of the particles from both samples have a size less than 1000 nm.
Abstract
In this study, in situ synthesis of B4C-SiC nanocomposite powder (1 : 1 molar ratio) was performed by mechanically activatedvolume combustion synthesis (MAVCS) method. Raw materials were included Si, C, B2O3 and Mg. Milling process was usedto mechanically activate the raw materials. Synthesis of prepared samples was occurred in a tube furnace under argonatmosphere at 1000 oC. The milling parameters were examined to optimize the activating of the raw materials process. Synthesized samples after mechanical activation with milling parameters of 300 rpm rotation speed, 20 to 1 ball to powderratio and milling time of 9 and 12 h had best phase and morphology conditions. Average crystallite size of B4C and SiCcompounds were calculated less than 15 nm for these two samples. Transmission electron microscopy (TEM) analysis of thesetwo samples approved their formation from the grains in nanometers scale. The TEM analysis showed the sample with 12 hof milling the raw materials has formed from more uniform grains than the sample with 9 h of milling the raw materials. Particle size analysis showed more than 99% of the particles from both samples have a size less than 1000 nm.
참고문헌 (25)
- F. Deng, , Mater. Lett, 60(13-14), pp.1771~1773 (2006)
- E. Mohammad Sharifi, , Adv. Powder. Technol, 22(3), pp.354~358 (2011)
- L. Nikzad, "High-energy ball milling of B-C-Ti mixtures for the fabrication of B4C and TiB2 nanocomposite powder", Journal of Ceramic Processing Research, 13(5), pp.590~594 (2012), 세라믹공정연구센터[DOI]
- I. Barin, "Thermochemical Data of Pure Substances" (1995), VCH
- H. -B. Jin, , Powder Technol, 196(2), pp.229~232 (2009)
- A. Morancais, , J. Eur. Ceram. Soc, 23(11), pp.1949~1956 (2003)
- P. Rai, , Adv. Powder. Technol, 25(2), pp.640~646 (2014)
- G. Liu, , Scripta Mater, 67(4), pp.416~419 (2012)
- F.C. Sahin, , Solid State Sci, 14(11–12), pp.1660~1663 (2012)
- Z. Zhang, , Powder Technol, 254(0), pp.131~136 (2014)
- J.J. Moore, , Prog. Mater. Sci, 39(4-5), pp.243~273 (1995)
- S.T. Aruna, , Curr. Opin. Solid. St. M, 12(3-4), pp.44~50 (2008)
- L. Takacs, , Prog. Mater. Sci, 47(4), pp.355~414 (2002)
- P. Mossino, , Ceram. Int, 30(3), pp.311~332 (2004)
- L. Nikzad, , Micro Nano Lett. IET, 7(4), pp.366~369 (2012)
- Z. Zhang, , Int. J. Refract. Met. H, 41(0), pp.270~275 (2013)
- U. Demircan, , Mater. Res. Bull, 42(2), pp.312~318 (2007)
- "X'Pert HighScore Plus" (2006), PANalytical B.V
- Z.A. Munir, , Materials Science Reports, 3(7-8), pp.277~365 (1989)
- K. Yang, , Mater. Res. Bull, 42(9), pp.1625~1632 (2007)
- L. Nikzad, , Int. J. Refract. Met. H, 35(0), pp.41~48 (2012)
- H. Roghani-Mamaghani, "Preparation of SiC-B4C Nanocomposite by SHS Method by Combining Mechanical Activation and Magnesium-Thermite Processes", M.Sc., pp.2014
- C. Suryanarayana, , Prog. Mater. Sci, 46, pp.184~ (2001)
- Y. Yang, , Mater. Lett, 61(3), pp.671~676 (2007)
- L.L. Hench, "Ceramic Processing before Firing" (1978), Wiley-Interscience