掺杂Co_2O_3及制样压力对SiC多孔陶瓷支撑体性能的影响
|
摘要
为了优化碳化硅(SiC)多孔陶瓷材料的性能,通过对支撑体掺杂Co_2O_3以提高其高温强度、热抗震性能和抗弯强度,利用X线衍射仪(XRD)、扫描电镜(SEM)、过滤压降测试系统和YLN-电子压力机分别对烧结后支撑体的物相结构、表面形貌、过滤压降及抗弯强度等性能进行测试分析,并应用阿基米德法测试支撑体的气孔率.实验结果表明:Co_2O_3掺杂支撑体经过高温烧结后,莫来石相衍射峰增多,过滤压降提高5%～10%,气孔率从33.02%降至27.25%,支撑体的抗弯强度从33.06 MPa提高到40.84 MPa.当制条压力和制片压力分别为3.5和11.5 MPa时,样品的抗弯强度最高,为44.1 MPa,气孔率为26.79%.
In order to optimize the properties of Si C porous ceramics,the high temperature strength,thermal seismic resis-tance and flexural strength of the support were improved by doping Co_2O_3 into the support. The phase structure,surfacemorphology,filtration pressure drop and bending strength of the sintered support were measured and analyzed by X-raydiffractometer,scanning electron microscope(SEM),filtration pressure drop test system and YLN-electronic press,respectively. The porosity of the support was measured by Archimedes method. The experimental results show that thediffraction peak of mullite phase increases and the envelope peak of glass phase decreases after high temperature sinteringof the Co_2O_3 doped support. The filter pressure drop is increased by 5%-10%,the porosity is reduced from 33.02% to27.25%,and the bending strength of the support is increased from 33.06 MPa to 40.84 MPa. The maximum bendingstrength is 44.1 MPa and the porosity is 26.79% when the strip pressure is 3.5 MPa and the sheet pressure is 11.5 MPa.
In order to optimize the properties of Si C porous ceramics,the high temperature strength,thermal seismic resis-tance and flexural strength of the support were improved by doping Co_2O_3 into the support. The phase structure,surfacemorphology,filtration pressure drop and bending strength of the sintered support were measured and analyzed by X-raydiffractometer,scanning electron microscope(SEM),filtration pressure drop test system and YLN-electronic press,respectively. The porosity of the support was measured by Archimedes method. The experimental results show that thediffraction peak of mullite phase increases and the envelope peak of glass phase decreases after high temperature sinteringof the Co_2O_3 doped support. The filter pressure drop is increased by 5%-10%,the porosity is reduced from 33.02% to27.25%,and the bending strength of the support is increased from 33.06 MPa to 40.84 MPa. The maximum bendingstrength is 44.1 MPa and the porosity is 26.79% when the strip pressure is 3.5 MPa and the sheet pressure is 11.5 MPa.
引文
[1]陈秀华. TiC/Si固相反应制备Ti3Si C2/SiC复合材料的反应路径研究[D].昆明:昆明理工大学,2001.CHEN X H. Reaction Path Study of Preparation Ti3Si2/Si C CompoundMaterials by TiC/Si Solid Reaction[D]. Kunming:Kunming Universityof Technology,2001(in Chinese).
[2]施强,乌晓江,徐雪元,等.整体煤气化联合循环(IGCC)发电技术与节能减排[J].节能技术,2009,27(1):18-21.SHI Q,WU X J,XU X Y,et al. IGCC power plant with energy conser-vation and emissions reduction[J]. Energy Saving Technology,2009,27(1):18-21(in Chinese).
[3] PIRJO P,VESA H,ANTTI-PEKKA N,et al. Environmental effects onmicrostructure and strength of SiC-based hot gas filters[J]. J Eur CeramSoc,2001,21(9):1261-1268.
[4] THORAVAL V,CASTELAS B,JOLIN J P,et al. Preparation andcharacterisation of microporous ceramic media[J]. Key Engineering Ma-terials,1991,61(4):118-213.
[5]姜殿香.大型增压循环流化床联合循环技术特点及发展趋势[J].锅炉制造,2007(1):28-29.JIANG D X. Characteristics and development trend of the combined cy-cle of large pressurized circulating fluidized bed[J]. Boiler Manufactur-ing,2007(1):28-29(in Chinese).
[6] ZHU S M,DING S Q,XI H,et al. Preparation and characterization ofSiC/cordierite composite porous ceramics[J]. Ceramic International,2007,33(1):115-118.
[7] KUECK A M,RAMASSE QM,JONGHE LC DE,et al. Atomic-scaleimaging and the effect of yttrium on the fracture toughness of siliconcarbide ceramics[J]. Acta Materialia,2010,58(8):2999-3005.
[8] DING S,ZHU S,ZENG Y,et al. Effect of Y2O3addition on the prop-erties of reaction-bonded porous SiC ceramics[J]. Ceram Int,2006,32(4):461-466.
[9] SEPULVEDA P,BINNER J G P. Processing of cellular ceramics byfoaming and in situ polymerisation of organic monomers[J]. Journal ofthe European Ceramic Society,1999,19(12):2059-2066.
[10] MENG G,WANG H,ZHENG W,et al. Preparation of porous ceramicsby gelcasting appro[J]. Materials Letters,2000,45(3):224-227.
[11] LU C,WU J,LIU D J,et al. Graphitic carbon nitride for elementalmercury capture[J]. Materials Letters,2018,227(15):308-310.
[12] PAN Z D,WANG Y M,HUANG H N,et al. Recent development onpreparation of ceramic inks in ink-jet printing[J]. Ceramics Internation-al,2015,41(10):12515-12528.
[13] HE X L,ZHOU Y,JIA D C,et al. Effect of sintering additives on mi-crostructures and mechanical properties of short-carbon-fiber-reinfor-ced SiC composites prepared by precursor pyrolysis-hot pressing[J].Ceramics Intnational,2006,32(8):929-934.
[14] LIN J,HUANG Y,ZHANG H,et al. Crack healing and strengtheningof SiC whisker and ZrO2fiber reinforced ZrB2ceramics[J]. CeramicsInternational,2014,40(10):16811-16815
[15] GRUJICIC M,GALGALIKA R H,RAMASWAMR S,et al. Derivation,parameterization and validation of a creep deformation/rupture materialconstitutive model for SiC/SiC ceramic-matrix composites(CMCs)[J].AIMS Materials Science,2016,3(2):591-619
[16] TAKAHASH K,HISASHI M,YOSHIDA S,et al. Improvement ofstatic fatigue strength of Si3N4/SiC crack-healed under cyclic stress[J].Journal of the European Ceramic Society,2004,25(11):1953-1959.
[17] FUEKI R,TAKAHASHI K,HOUJOU K,et al. Fatigue limit predic-tion and estimation for the crack size rendered harmless by peening forwelded joint containing a surface crack[J]. Materials Sciences and App-lications,2015,6(6):500-510.
[18]李俊峰.高温过滤用碳化硅多孔陶瓷结构设计与性能研究[D].北京:清华大学,2011.LI J F,Design and Performance of High Temperature Filtration withSilicon Carbide Porous Ceramics[D]. BeiJing:Tsinghua University,2011(in Chinese).
[2]施强,乌晓江,徐雪元,等.整体煤气化联合循环(IGCC)发电技术与节能减排[J].节能技术,2009,27(1):18-21.SHI Q,WU X J,XU X Y,et al. IGCC power plant with energy conser-vation and emissions reduction[J]. Energy Saving Technology,2009,27(1):18-21(in Chinese).
[3] PIRJO P,VESA H,ANTTI-PEKKA N,et al. Environmental effects onmicrostructure and strength of SiC-based hot gas filters[J]. J Eur CeramSoc,2001,21(9):1261-1268.
[4] THORAVAL V,CASTELAS B,JOLIN J P,et al. Preparation andcharacterisation of microporous ceramic media[J]. Key Engineering Ma-terials,1991,61(4):118-213.
[5]姜殿香.大型增压循环流化床联合循环技术特点及发展趋势[J].锅炉制造,2007(1):28-29.JIANG D X. Characteristics and development trend of the combined cy-cle of large pressurized circulating fluidized bed[J]. Boiler Manufactur-ing,2007(1):28-29(in Chinese).
[6] ZHU S M,DING S Q,XI H,et al. Preparation and characterization ofSiC/cordierite composite porous ceramics[J]. Ceramic International,2007,33(1):115-118.
[7] KUECK A M,RAMASSE QM,JONGHE LC DE,et al. Atomic-scaleimaging and the effect of yttrium on the fracture toughness of siliconcarbide ceramics[J]. Acta Materialia,2010,58(8):2999-3005.
[8] DING S,ZHU S,ZENG Y,et al. Effect of Y2O3addition on the prop-erties of reaction-bonded porous SiC ceramics[J]. Ceram Int,2006,32(4):461-466.
[9] SEPULVEDA P,BINNER J G P. Processing of cellular ceramics byfoaming and in situ polymerisation of organic monomers[J]. Journal ofthe European Ceramic Society,1999,19(12):2059-2066.
[10] MENG G,WANG H,ZHENG W,et al. Preparation of porous ceramicsby gelcasting appro[J]. Materials Letters,2000,45(3):224-227.
[11] LU C,WU J,LIU D J,et al. Graphitic carbon nitride for elementalmercury capture[J]. Materials Letters,2018,227(15):308-310.
[12] PAN Z D,WANG Y M,HUANG H N,et al. Recent development onpreparation of ceramic inks in ink-jet printing[J]. Ceramics Internation-al,2015,41(10):12515-12528.
[13] HE X L,ZHOU Y,JIA D C,et al. Effect of sintering additives on mi-crostructures and mechanical properties of short-carbon-fiber-reinfor-ced SiC composites prepared by precursor pyrolysis-hot pressing[J].Ceramics Intnational,2006,32(8):929-934.
[14] LIN J,HUANG Y,ZHANG H,et al. Crack healing and strengtheningof SiC whisker and ZrO2fiber reinforced ZrB2ceramics[J]. CeramicsInternational,2014,40(10):16811-16815
[15] GRUJICIC M,GALGALIKA R H,RAMASWAMR S,et al. Derivation,parameterization and validation of a creep deformation/rupture materialconstitutive model for SiC/SiC ceramic-matrix composites(CMCs)[J].AIMS Materials Science,2016,3(2):591-619
[16] TAKAHASH K,HISASHI M,YOSHIDA S,et al. Improvement ofstatic fatigue strength of Si3N4/SiC crack-healed under cyclic stress[J].Journal of the European Ceramic Society,2004,25(11):1953-1959.
[17] FUEKI R,TAKAHASHI K,HOUJOU K,et al. Fatigue limit predic-tion and estimation for the crack size rendered harmless by peening forwelded joint containing a surface crack[J]. Materials Sciences and App-lications,2015,6(6):500-510.
[18]李俊峰.高温过滤用碳化硅多孔陶瓷结构设计与性能研究[D].北京:清华大学,2011.LI J F,Design and Performance of High Temperature Filtration withSilicon Carbide Porous Ceramics[D]. BeiJing:Tsinghua University,2011(in Chinese).
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |