왕겨로부터 합성된 탄화규소 분말
SiC powders synthesized from rice husk
1
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
본 연구에서는, 실리카 분말과 왕겨의 혼합체로부터 탄화된 물질로부터, 탄화규소 (SiC) 분말이 합성되었다. 탄화왕겨와 실리카의 열탄화환원 반응을 통해 얻어진, SiC 시료는 XRD 회절 패턴, FE-SEM 및 FE-TEM을 통해 분석되었다. 시료들은 XRD 패턴에서, 35 o 부근의 (111) peak는 매우 높은 intensity를 나타내었고, 60 o , 72 o 부근의 (220), (311) peak 등탄화규소 결정상에 대한 peak pattern이 명확하게 관찰되었다. Ar 분위기에서 탄화왕겨와 실리카의 혼합비율이 6 : 4인 혼합물로부터 합성된 시료는 XRD 패턴에서 잔류카본이 검출되지 않았으며, hexagonal 결정상의 비율이 비교적 낮고, cubic SiC 결정상이 주도적으로 나타내었다. 탄화왕겨와 실리카의 혼합비율이 6 : 4인 경우에 합성된 시료는 5 μm 이하의 미세한 입자들이 관찰되었으며, TEM 분석결과에서, SiC 결정질상의 (110) 회절패턴 형태를 나타내었다.
Abstract
In this work, the SiC powders were synthesized through the carbonized matter from the mixture of silica powder and rice husks. The SiC powders, obtained from the carbothermal reduction reaction of silica and carbonized rice husks, were investigated by XRD patterns, XPS, FE-SEM and FE-TEM. In the XRD patterns, the specimens showed clearly very high strong peak of (111) plane near 35 o as well as weak (220) and (311) peak respectively at approximately 60 o and 72 o . Under Ar atmosphere, the power synthesized from the mixture (in case of mixing ratio, 6 : 4) of carbonized rice husks and silica showed mainly cubic SiC crystalline phase showing relatively lower ratio of hexagonal phase without residual carbon in XRD pattern. In the TEM analysis, the specimen, synthesized from carbonized rice husks and silica with mixing ratio of 6 : 4 under Ar atmosphere, showed relatively fine particles under 5 μm and a crystalline SiC phase of (100) diffraction pattern.
참고문헌 (15)
- K. Taesoek, "Manufacturing method of silicon carbide from rice hull and rice straw", Korean patent, 10-2005-0024392, ~ (2006)
- The development of high value-added core material using wastewater and waste resources, , Korea Institute of Industrial Technology, 67~ (1994)
- A. Maity, "Synthesis of SiC ceramics from processed cellulosic bio-precursor", Ceram. Int, 36, pp.323~ (2010)
- A. Onojah, "Comparative studies of silicon from rice husk ash and natural quartz", Am. J. Sci. Ind. Res, 3, pp.2153~ (2012)
- J. G. Lee, "Formation of silicon carbide from lice hulls", Am. Ceram. So. Bull, 54, pp.195~ (1975)
- S. B. Hanna, "Silicon carbide and silicon nitride from rice hulls-III-Formation of Silicon nitride", Br. Ceram. Trans. J, 84, pp.18~ (1985)
- N. K. Sharma, "Formation and structure of silicon carbide whiskers from rice hulls", J. Am. Ceram. Soc, 67, pp.715~ (1984)
- B. Ivan, "Production of silicon carbide from rice hulls", US patent 3,754,076, ~ (1973)
- V. P. Della, "Rice husk ash as an alternate source for active silica production Mater", Lett, 57, pp.818~ (2002)
- Y. Youngjo, "Synthesis of silicon carbide whiskers using bristle of rice hull", Korean patent, 10-2010-0051695, ~ (2011)
- C. Bağci, "Microstructural characterisation of β-SiC powders synthesised by carbothermally reduction of Turkish diatomite", Sci. Res. Essays, 6, pp.542~ (2011)
- M.F. Zawrah, "and characterization of SiC and SiC", Si3N4 composite nano powders from waste material, 2012, pp.227-228, 250~
- H. P. Martin, "Synthesis of nanocrystalline silicon carbide powder by carbothermal reduction", J. Eur. Ceram. Soc, 18, pp.1737~ (1998)
- S. M. Kang, "The study on the formation of growth steps in the sublimation growth of SiC single crystals", J. Korean Cryst. Growth Cryst. Technol, 11, pp.1~ (2001)
- 강승민, "저항가열 방식을 적용한 승화법에 의한 SiC 결정 성장에 대한 연구", 한국결정성장학회지, 25(3), pp.85~92 (2015), 한국결정성장학회[DOI]