以石墨为造孔剂多孔Al2O3陶瓷体系中晶粒生长的研究

人工晶体学报, 2010, 39(5): 1176-1180.

以石墨为造孔剂多孔Al2O3陶瓷体系中晶粒生长的研究

申倩倩 ^1, , 田栋 ^2, , 郭丽华 ^3, , 王淑花 ^4, , 贾虎生 ^5,

1.太原理工大学材料科学与工程学院,太原,030024

2.太原理工大学材料科学与工程学院,太原,030024

3.太原理工大学材料科学与工程学院,太原,030024

4.太原理工大学材料科学与工程学院,太原,030024;太原理工大学新材料界面科学与工程教育部重点实验室,太原,030024

5.太原理工大学材料科学与工程学院,太原,030024;太原理工大学新材料界面科学与工程教育部重点实验室,太原,030024

基金项目: 山西省国际科技合作项目(2007081029;2009081046)

关键词： Al2O3陶瓷 , 石墨 , 晶粒尺寸 , 气孔率

Research on Grain Growth in Porous Alumina Ceramics Using Graphite as Pore-forming Agent

针对多孔Al2O3陶瓷两相体系,研究了烧结温度、保温时间和石墨含量对陶瓷气孔率、晶粒尺寸的影响.结果表明:随着烧结温度的升高和保温时间的延长,晶粒尺寸增大而气孔率下降;随着石墨含量的增加,气孔率明显提高而晶粒尺寸变化不明显.在此基础上,通过进一步拟合晶粒生长和时间的双对数线性关系,得出在1300 ℃时多孔Al2O3陶瓷的晶粒生长指数为2.95,与理论值基本吻合.

参考文献

[1]	Yang S M;Coombs N;Geoffery A et al.Micromolding in Invented Polymer Opals:Synthesis of Hexagonal Mesoporous Silica Opals[J].Advanced Materials,2002,12(24):1940-1943.
[2]	Frenkel J .Viscous Flow of Crystalline Bodies Under the Action of Surface Tension[J].Journal of Physics,1945,9(05):385-391.
[3]	Kuczynski G C .Measurement of Self-diffusion of Silver without Radioactive tracers[J].Journal of Applied Physics,1950,21(07):632-635.
[4]	Hsueh C H;Evans A G;Coble R L .Microstructure Development during Final/Intermediate Stage Sintering-1 Pore /Grain Boundary Separation[J].Acta Metallurgica,1982,30(07):1269-1279.
[5]	Spears M A;Evans A G .Microstructure Development During Final/Intermediate Stage Sintering-2 Grain and Pore Coarsening[J].Acta Metallurgica,1982,30(07):1281-1289.
[6]	施剑林 .固相烧结Ⅰ-气孔显微结构模型及其热力学稳定性,致密化方程[J].硅酸盐学报,1997,25(05):499-513.
[7]	施剑林 .固相烧结Ⅱ-粗化与致密化关系及物质传输途径[J].硅酸盐学报,1997,25(06):657-667.
[8]	施剑林.固相烧结--Ⅲ实验：超细氧化锆素坯烧结过程中的晶粒与气孔生长及致密化行为[J].硅酸盐学报,1998(01):1-13.
[9]	Coble R L .Sintering Crystalline Solids:Ι,Intermediate and Final State Diffusion Models[J].Journal of Applied Physics,1961,32(05):787-792.
[10]	Coble R L .Sintering Crystalline Solids:II,Experimental Test of Diffusion Models in Powder Compacts[J].Journal of Applied Physics,1961,32(05):793-799.
[11]	Alexander K B;Becher P F;Shirley B .Grain Growth Kinetics in Alumina-Zirconia (CeZTA) Composites[J].Journal of the American Ceramic Society,1994,77(04):939-946.
[12]	Exner H E .Solid-state Sintering:Critical Assessment of Theoretical Concepts and Experimental Methods[J].Powder Metallurgy,1980,23(04):203-209.
[13]	Qiang Yu;Sven K. Esche .A Monte Carlo algorithm for single phase normal grain growth with improved accuracy and efficiency[J].Computational Materials Science,2003(3):259-270.
[14]	Shi J L;Yen T S .Crystallite Growth Characteristics in Superfine Y-TZP and YSZ Powders and Compacts[J].Journal of the European Ceramic Society,1994,14(06):505-510.

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以石墨为造孔剂多孔Al2O3陶瓷体系中晶粒生长的研究

Research on Grain Growth in Porous Alumina Ceramics Using Graphite as Pore-forming Agent

参考文献