Porous SiC Prepared Using Fine α-Al_2O_3 and SiC Powders as Sintering Additives
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摘要
A reaction bonding technique and a method of layer coating were developed to fabricate porous SiC.The green body was prepared using 250.0μm SiC particles as the raw material,fineα-Al_2O_3 and SiC powders with mass ratio of 2.5:1as sintering additives,65.2μm graphite as the pore-forming agent and polyvinyl alcohol(PVA)as the binder.The micro powders were coated on the surface of coarse SiC particles.After sintering,fine SiC particles were oxidized to silica(SiO_2)then transforming into cristobalite,which finally reacted withα-Al_2O_3 to produce mullite(3Al_2O_3·2SiO_2).The results show that SiC particles are bonded by the mullite and oxidation-derived SiO_2.The apparent porosity of the specimens decreases from 31.3%to 20.5%with the amount of micro powders increasing from 5 mass%to 20 mass%.The bending strength increases at the first stage and then decreases with the increase of fine powders,and the specimen with 10 mass%of fine powders shows relatively high bending strength of 23.5 MPa.
A reaction bonding technique and a method of layer coating were developed to fabricate porous SiC.The green body was prepared using 250.0μm SiC particles as the raw material,fineα-Al_2O_3 and SiC powders with mass ratio of 2.5:1as sintering additives,65.2μm graphite as the pore-forming agent and polyvinyl alcohol(PVA)as the binder.The micro powders were coated on the surface of coarse SiC particles.After sintering,fine SiC particles were oxidized to silica(SiO_2)then transforming into cristobalite,which finally reacted withα-Al_2O_3 to produce mullite(3Al_2O_3·2SiO_2).The results show that SiC particles are bonded by the mullite and oxidation-derived SiO_2.The apparent porosity of the specimens decreases from 31.3%to 20.5%with the amount of micro powders increasing from 5 mass%to 20 mass%.The bending strength increases at the first stage and then decreases with the increase of fine powders,and the specimen with 10 mass%of fine powders shows relatively high bending strength of 23.5 MPa.
A reaction bonding technique and a method of layer coating were developed to fabricate porous SiC.The green body was prepared using 250.0μm SiC particles as the raw material,fineα-Al_2O_3 and SiC powders with mass ratio of 2.5:1as sintering additives,65.2μm graphite as the pore-forming agent and polyvinyl alcohol(PVA)as the binder.The micro powders were coated on the surface of coarse SiC particles.After sintering,fine SiC particles were oxidized to silica(SiO_2)then transforming into cristobalite,which finally reacted withα-Al_2O_3 to produce mullite(3Al_2O_3·2SiO_2).The results show that SiC particles are bonded by the mullite and oxidation-derived SiO_2.The apparent porosity of the specimens decreases from 31.3%to 20.5%with the amount of micro powders increasing from 5 mass%to 20 mass%.The bending strength increases at the first stage and then decreases with the increase of fine powders,and the specimen with 10 mass%of fine powders shows relatively high bending strength of 23.5 MPa.
引文
[1]Jung-Hye Eom,Young-Wook Kim,Santosh Raju.Processing and properties of macroporous silicon carbide ceramics:A review.Journal of Asian Ceramic Societies,2013,1(3):220-242.
[2]Manabu Fukushima,Paolo Colombo.Silicon carbide-based foams from direct blowing of polycarbosilane.Journal of the European Ceramic Society,32(2012):503-510.
[3]J.H.She,T.Ohji,S.Kanzaki.Oxidation bonding of porous silicon carbide ceramics with synergistic performance.Journal of the European Ceramic Society,2004,24(2):331-334.
[4]Shuqiang Ding,Yu-Ping Zeng,Dongliang Jiang.Gas permeability behavior of mullite-bonded porous silicon carbide ceramics.Journal of Materials Science,2007,42(17):7171-7175.
[5]Shuqiang Ding,Yu-Ping Zeng,Dongliang Jiang.Thermal shock behaviour of mullite-bonded porous silicon carbide ceramics with yttria addition.Journal of Physics D:Applied Physics,2007,40(7):2138.
[6]Shuqiang Ding,Sumin Zhu,Yu-Ping Zeng,Dongliang Jiang.Fabrication of mullite-bonded porous silicon carbide ceramics by in situ reaction bonding.Journal of the European Ceramic Society,2007,27(4):2095-2102.
[7]Junfeng Li,Hong Lin,Jianbao Li.Factors that influence the flexural strength of SiC-based porous ceramics used for hot gas filter support.Journal of the European Ceramic Society,2011,31(5):825-831.
[8]Lun Wenshan,Xu Zeyue,Zhu Jun,Shen Yunji,Peng Wenbo,Guo Wenfei.Study on Porosity and sintering process of high temperature flue gas filtration SiC porous ceramics.China Ceramic Industry(in Chinese),2017,24(1):23-26.
[9]Pan Mu,Nan Cewen.High temperature oxidation and corrosion of SiC-based materials.Corrosion Science and Protection Technology(in Chinese),2000,12(2):109-113,120.
[10]Ebrahimpour Omid,Chaouki Jamal,Dubois Charles.Diffusional effects for the oxidation of SiC powders in thermogravimetric analysis experiments.Journal of Materials Science,2013,48(12):4396-4407.
[11]Y.S.Touloukian,R.K.Kirby,E.R.Taylor,T.Y.R.Lee.Thermophysical properties of matter-the TPRC data series.Volume 13.Thermal Expansion-Nonmetallic Solids,1977.
[12]Omid Ebrahimpour,Charles Dubois,Jamal Chaouki.Fabrication of mullite-bonded porous SiC ceramics via a sol-gel assisted in situ reaction bonding.Journal of the European Ceramic Society,2014,34(2):237-247.
[13]Robert Foster Davis,Joseph A.Pask.Diffusion and Reaction Studies in the System Al2O3-SiO2.Journal of the American Ceramic Society,1972,55(10):525-531.
[14]Peter Mechnich,Hartmut Schneider,Martin Schmücker,Bilge Saruhan.Accelerated reaction bonding of mullite.Journal of the American Ceramic Society,1998,81(7):1931-1937.
[15]Reed A.Howald,I.Eliezer.The thermodynamic properties of mullite.Journal of Physical Chemistry,1978,82(20):2199-2204.
[16]Cheng-ying Bai,Yu Li,Zhang-min Liu,Peng-wei Liu,Xiang-yun Deng,Jian-bao Li,Jie Yang.Fabrication and properties of mullite-bonded porous SiC membrane supports using bauxite as aluminum source.Ceramics International,2015,41(3):4391-4400.
[17]Cheng-Ying Bai,Xiang-Yun Deng,Jian-Bao Li,Ya-Ni Jing,WenKai Jiang,Zhang-Min Liu,Yu Li.Fabrication and properties of cordieritemullite bonded porous SiC ceramics.Ceramics International,2014,40(4):6225-6231.
[18]Yingchao Dong,Jian-er Zhou,Bin Lin,Yongqing Wang,Songlin Wang,Lifeng Miao,Ying Lang,Xingqin Liu,Guangyao Meng.Reactionsintered porous mineral-based mullite ceramic membrane supports made from recycled materials.Journal of Hazardous Materials,2009,172(1):180-186.
[19]Qikai Lü,Xinfa Dong,Zhiwen Zhu,Yingchao Dong.Environmentoriented low-cost porous mullite ceramic membrane supports fabricated from coal gangue and bauxite.Journal of Hazardous Materials,2014,273:136-145.
[2]Manabu Fukushima,Paolo Colombo.Silicon carbide-based foams from direct blowing of polycarbosilane.Journal of the European Ceramic Society,32(2012):503-510.
[3]J.H.She,T.Ohji,S.Kanzaki.Oxidation bonding of porous silicon carbide ceramics with synergistic performance.Journal of the European Ceramic Society,2004,24(2):331-334.
[4]Shuqiang Ding,Yu-Ping Zeng,Dongliang Jiang.Gas permeability behavior of mullite-bonded porous silicon carbide ceramics.Journal of Materials Science,2007,42(17):7171-7175.
[5]Shuqiang Ding,Yu-Ping Zeng,Dongliang Jiang.Thermal shock behaviour of mullite-bonded porous silicon carbide ceramics with yttria addition.Journal of Physics D:Applied Physics,2007,40(7):2138.
[6]Shuqiang Ding,Sumin Zhu,Yu-Ping Zeng,Dongliang Jiang.Fabrication of mullite-bonded porous silicon carbide ceramics by in situ reaction bonding.Journal of the European Ceramic Society,2007,27(4):2095-2102.
[7]Junfeng Li,Hong Lin,Jianbao Li.Factors that influence the flexural strength of SiC-based porous ceramics used for hot gas filter support.Journal of the European Ceramic Society,2011,31(5):825-831.
[8]Lun Wenshan,Xu Zeyue,Zhu Jun,Shen Yunji,Peng Wenbo,Guo Wenfei.Study on Porosity and sintering process of high temperature flue gas filtration SiC porous ceramics.China Ceramic Industry(in Chinese),2017,24(1):23-26.
[9]Pan Mu,Nan Cewen.High temperature oxidation and corrosion of SiC-based materials.Corrosion Science and Protection Technology(in Chinese),2000,12(2):109-113,120.
[10]Ebrahimpour Omid,Chaouki Jamal,Dubois Charles.Diffusional effects for the oxidation of SiC powders in thermogravimetric analysis experiments.Journal of Materials Science,2013,48(12):4396-4407.
[11]Y.S.Touloukian,R.K.Kirby,E.R.Taylor,T.Y.R.Lee.Thermophysical properties of matter-the TPRC data series.Volume 13.Thermal Expansion-Nonmetallic Solids,1977.
[12]Omid Ebrahimpour,Charles Dubois,Jamal Chaouki.Fabrication of mullite-bonded porous SiC ceramics via a sol-gel assisted in situ reaction bonding.Journal of the European Ceramic Society,2014,34(2):237-247.
[13]Robert Foster Davis,Joseph A.Pask.Diffusion and Reaction Studies in the System Al2O3-SiO2.Journal of the American Ceramic Society,1972,55(10):525-531.
[14]Peter Mechnich,Hartmut Schneider,Martin Schmücker,Bilge Saruhan.Accelerated reaction bonding of mullite.Journal of the American Ceramic Society,1998,81(7):1931-1937.
[15]Reed A.Howald,I.Eliezer.The thermodynamic properties of mullite.Journal of Physical Chemistry,1978,82(20):2199-2204.
[16]Cheng-ying Bai,Yu Li,Zhang-min Liu,Peng-wei Liu,Xiang-yun Deng,Jian-bao Li,Jie Yang.Fabrication and properties of mullite-bonded porous SiC membrane supports using bauxite as aluminum source.Ceramics International,2015,41(3):4391-4400.
[17]Cheng-Ying Bai,Xiang-Yun Deng,Jian-Bao Li,Ya-Ni Jing,WenKai Jiang,Zhang-Min Liu,Yu Li.Fabrication and properties of cordieritemullite bonded porous SiC ceramics.Ceramics International,2014,40(4):6225-6231.
[18]Yingchao Dong,Jian-er Zhou,Bin Lin,Yongqing Wang,Songlin Wang,Lifeng Miao,Ying Lang,Xingqin Liu,Guangyao Meng.Reactionsintered porous mineral-based mullite ceramic membrane supports made from recycled materials.Journal of Hazardous Materials,2009,172(1):180-186.
[19]Qikai Lü,Xinfa Dong,Zhiwen Zhu,Yingchao Dong.Environmentoriented low-cost porous mullite ceramic membrane supports fabricated from coal gangue and bauxite.Journal of Hazardous Materials,2014,273:136-145.