Microstructure and Fracture Toughness of Al2O3/Er3Al5O12 Eutectic Ceramic Prepared by Laser Zone Remelting

doi:10.3724/SP.J.1077.2011.00841

Abstract

Abstract: Directionally solidified Al₂O₃/Er₃Al₅O₁₂(EAG) eutectic ceramic was prepared by laser zone remelting technique. The eutectic morphology and microstructure evolution investigated as a function of laser scanning rate. Moreover, the mechanical properties and toughening mechanisms were studied. The Al₂O₃/EAG eutectic ceramic consists of only two continuous phases of Al₂O₃and EAG which interpenetrates with each other to form well-distributed three-dimensional network. The eutectic spacing is only around 0.2-2.1μm and reduces with the increase of scanning rate. At low scanning rate, the typical lamellar irregular eutectic structure is obtained. When the scanning rate reaches 800μm/s, the cellular or dendrite microstructure appears. The hardness and the fracture toughness at room temperature are measured to be 18.7GPa and 2.45MPa·m^1/2, respectively. The refined microstructure, crack deflection at phase interface and crack branching contribute to the improved toughness.

Key words: oxide eutectic ceramic, laser zone remelting, microstructure, fracture toughness

CLC Number:

TB332

DENG Yang-Fang, ZHANG Jun, SU Hai-Jun, SONG Kan, LIU Lin, FU Heng-Zhi. Microstructure and Fracture Toughness of Al₂O₃/Er₃Al₅O₁₂ Eutectic Ceramic Prepared by Laser Zone Remelting[J]. Journal of Inorganic Materials, 2011, 26(8): 841-846.

References

[1] Waku Y, Nakagawa N, Wakamoto T, et al. A ductile ceramic eutectic composite with high strength at 1873 K. Nature, 1997, 389(6646): 49-52.

[2] 潘振甦, 张惠丰, 郭景坤(PAN Zhen-Su, et al). 定向凝固共晶多相复合陶瓷的研究现状. 无机材料学报(Journal of Inorganic Materials), 1999, 14(4): 513-519.

[3] LLorca J, Orera V M. Directionally solidified eutectic ceramic oxides. Prog. Mater. Sci., 2006, 51(6): 711-809.

[4] Su H J, Zhang J, Deng Y F, et al. A modified preparation technique and characterization of directionally solidified Al2O3/Y3Al5O12 eutectic in situ composites. Scr. Mater., 2009, 60(6): 362-365.

[5] Waku Y, Nakagawa N, Ohtsubo H, et al. Fracture and deformation behavior of melt growth composites at very high temperatures. J. Mater. Sci., 2001, 36(7): 1585-1594.

[6] Gouadec G, Colomban P H, Piquet N, et al. Raman/Cr3+ fluorescence mapping of a melt-grown Al2O3/GdAlO3 eutectic. J. Eur. Ceram. Soc., 2005, 25(8): 1447-1453.

[7] Lee J H, Yoshikawa A, Murayamab Y, et al. Microstructure and mechanical properties of Al2O3/Y3Al5O12/ZrO2 ternary eutectic materials. J. Eur. Ceram. Soc., 2005, 25(8): 1411-1417.

[8] Sai H, Yugami H, Nakamura K, et al. Selective emission of Al2O3/Er3Al5O12 eutectic composite for thermophotovoltaic generation of electricity. Jpn. J. Appl. Phys., 2000, 39: 1957-1961.

[9] Adachi Y, Yugami H, Shibata K, et al. Compact TPV Generation System Using Al2O3/Er3Al5O12 Eutectic Ceramics Selective Emitters. Thermophotovoltaic Generation of Electricity: Sixth Conference on Thermophotovoltaic Generation of Electricity, Freiburg, Germany, 2004: 198-205.

[10] 苏海军. 超高温氧化铝基共晶自生复合陶瓷的凝固组织与性能. 西安: 西北工业大学博士论文, 2009.

[11] Waku Y, Nakagawa N, Ohtsubo H, et al. High temperature properties and thermal stability of a unidirectionally solidified Al2O3/Er3Al5O12 eutectic composites. J. Jpn. Inst. Met., 2000, 64(2): 101-107.

[12] Anstis G R, Chantikul P, Lawn B R, et al. A critical evaluation of indentation techniques for measuring fracture toughness: I, direct crack measurements. J. Am. Ceram. Soc., 1981, 64(9): 533-538.

[13] Oliete P B, Pe-a J I. Study of the gas inclusions in Al2O3/Y3Al5O12 and Al2O3/Y3Al5O12/ZrO2 eutectic fibers grown by laser floating zone. J. Cryst. Growth, 2007, 304(2): 514-519.

[14] Fernandez J M, Sayir A, Farmer S C, et al. High temperature creep deformation of directionally solidified Al2O3/Er3Al5O12. Acta Mater., 2003, 51(6): 1705-1720.

[15] Nakagawa N, Ohtsubo H, Waku Y, et al. Thermal emission properties of Al2O3/Er3Al5O12 eutectic ceramics. J. Eur. Ceram. Soc., 2005, 25(8): 1285-1291.

[16] Su H J, Zhang J, LIU L, et al. Effects of laser processing parameters on solidification microstructures of ternary Al2O3/YAG/ZrO2 eutectic in situ composite and its thermal property. Trans. Nonferrous Met. Soc. China, 2009, 19(6): 1533-1538.

[17] Mizutani Y, Yasuda H, Ohnaka I, et al. Coupled growth of unidirectionally solidified Al2O3-YAG eutectic ceramics. J. Cryst. Growth, 2002, 244(3/4): 384-392.

[18] 崔春娟, 张军, 苏海军, 等. (CUI Chun-Juan, et al). 共晶自生复合场发射材料的定向凝固组织特征. 无机材料学报(Journal of Inorganic Materials), 2007, 22(5): 1019-1024.

[19] Kurz W, Fisher D J. Fundamentals of Solidification, the first edition. Lausanne: Trans Tech Publications. 1984: 110-112.

[20] 苏海军, 张军, 刘林, 等(SU Hai-Jun, et al). 定向凝固Al2O3/YAG共晶自生复合材料的组织形态及非规则共晶生长. 金属学报(Acta Metall. Sin.), 2008, 44(4): 457-462.

[21] Yoshikawa A, Epelbaum B M, Hasegawa K, et al. Microstructures in oxide eutectic fibers grown by a modified micro-pulling-down method. J. Cryst. Growth, 1999, 205(3): 305-316.

[22] Yoshikawa A, Hasegawa K, Lee J H, et al. Phase identification of Al2O3/RE3Al5O12 and Al2O3/REAlO3(RE=Sm-Lu, Y) eutectics. J. Cryst. Growth, 2000, 218(1): 67-73.

[23] Mesa M C, Oliete P B, Orera V M, et al. Microstructure and mechanical properties of Al2O3/Er3Al5O12 eutectic rods grown by the laser-heated floating zone method. J. Eur. Ceram. Soc., 2010, 31(7): 1241-1250.

[24] Pastor J Y, LLorca J, Martín A, et al. Fracture toughness and strength of Al2O3-Y3Al5O12 and Al2O3-Y3Al5O12-ZrO2 directionally solidified eutectic oxides up to 1900K. J. Eur. Ceram. Soc., 2008, 28(12): 2345-2351.

[25] 郭景坤(GUO Jing-Kun). 陶瓷材料的强化与增韧新途径的探索. 无机材料学报(Journal of Inorganic Materials), 1998, 13(1): 23-26.

Microstructure and Fracture Toughness of Al₂O₃/Er₃Al₅O₁₂ Eutectic Ceramic Prepared by Laser Zone Remelting

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