烧结助剂对非等温烧结法制备氧化铝陶瓷微观结构和性能的影响

doi:10.19976/j.cnki.43-1448/TF.2021074

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Abstract On the basis of pressure less sintering, the effects of MgO-Y₂O₃, MgO-Y₂O₃-La₂O₃ additives and sintering process containing one-step and two-step non-isothermal sintering on the microstructure and properties of Al₂O₃ ceramics were studied. The results show that using non-isothermal sintering method can significantly refine the Al₂O₃ grains. When MgO-Y₂O₃are used as sintering aids, the closed porosity of Al₂O₃ ceramics prepared by one-step sintering and two-step non-isothermal sintering method are 1.88% and 3.93%, respectively, and its corresponding Al₂O₃ grains are 0.42 μm and 0.38 μm, respectively. At the same time, when MgO-Y₂O₃-La₂O₃are used as sintering additives, the closed porosity of ceramics prepared by one-step sintering method and two-step non-isothermal sintering method are 3.59% and 2.82%, respectively, and its corresponding Al₂O₃ grains are 0.40 μm and 0.42 μm, respectively. When MgO-Y₂O₃ and MgO-Y₂O₃-La₂O₃are used as sintering aids, the Al₂O₃ ceramics prepared in a one-step sintering process have higher hardness, and they are (18.3±0.5) GPa and (18.2±0.6) GPa, respectively. In order to obtain the higher fracture toughness, it is necessary to use MgO-Y₂O₃ as a sintering aid to prepare Al₂O₃ ceramic by one-step sintering method, and the fracture toughness value can reach (4.6±0.3) MPa·m^1/2.

Key words： alumina sintering aids non-isothermal sintering microstructures mechanical properties

Received: 16 August 2021 Published: 22 December 2021

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	FANG Haojie
	HE Yiwen
	ZHANG Xiaoyun
	NIU Wenbin
	WU Lixiang
	GUO Weiming
	HUANG Rongxia
	QIAO Guanjun
	LIN Huatai
	ZENG Xiong

Cite this article:

FANG Haojie,HE Yiwen,ZHANG Xiaoyun, et al. Effects of sintering aids on microstructure and properties of non-isothermal sintering alumina ceramics[J]. Materials Science and Engineering of Powder Metallurgy, 2021, 26(6): 525-530.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2021074 OR http://pmbjb.csu.edu.cn/EN/Y2021/V26/I6/525

[1] 李国星, 卢红霞, 孙洪巍, 等. MgB₂等镁化物添加剂对氧化铝陶瓷晶粒生长形貌的影响[J]. 中国陶瓷工业, 2005, 12(1): 12-14.
LI Guoxing, LU Hongxia, SUN Hongwei, et al.The effect of MgB₂ and other magnesia additives on the grain growth morphology of alumina ceramics[J]. China Ceramic Industry, 2005, 12(1): 12-14.
[2] 吴振东, 叶建东. 添加剂对氧化铝陶瓷的烧结和显微结构的影响[J]. 兵器材料科学与工程, 2002, 25(1): 68-72.
WU Zhendong, YE Jiandong.The influence of additives on the sintering and microstructure of alumina ceramics[J]. Ordnance Material Science and Engineering, 2002, 25(1): 68-72.
[3] LU J, PRABHU M, SONG J, et al.Optical properties and highly efficient laser oscillation of Nd:YAG ceramics[J]. Applied Physics B, 2000, 71(4): 469-473.
[4] MOULTON P F.Spectroscopic and laser characteristics of Ti:Al₂O₃[J]. Journal of the Optical Society of America B Optical Physics, 1986, 3(1): 125-133.
[5] JIANG L I, YUBAI P, JINWEI N, et al.Low temperature sintering of bimodal alumina powder mixtures with nanocrystalline component[J]. Journal of Inorganic Materials, 2003, 18(6): 1192-1198.
[6] YOSHIMURA H N, GOLDENSTEIN H.Light scattering in polycrystalline alumina with bi-dimensionally large surface grains[J]. Journal of the European Ceramic Society, 2009, 29(2): 293-303.
[7] 李莉, 张丽, 郭方全, 等. 热等静压烧结氧化铝陶瓷研究[J]. 硅酸盐通报, 2012, 31(5): 1228-1233.
LI Li, ZHANG Li, GUO Fangquan, et al.Research on hot isostatic pressing sintered alumina ceramics[J]. Bulletin of the Chinese Ceramic Society, 2012, 31(5): 1228-1233.
[8] 范景莲, 徐浩翔, 黄伯云, 等. 金属-Al₂O₃陶瓷基复合材料的研究现状及应用前景[J]. 粉末冶金材料科学与工程, 2002(3): 200-206.
FAN Jinglian, XU Haoxiang, HUANG Boyun, et al.Research status and application prospect of metal-Al₂O₃ ceramic matrix composites[J]. Materials Science and Engineering of Powder Metallurgy, 2002(3): 200-206.
[9] JIANG D T, HULBERT D M, UMBERTO Anselmi-Tamburini, et al.Optically transparent polycrystalline Al₂O₃ produced by spark plasma sintering[J]. Journal of the American Ceramic Society, 2008, 91(1): 151-154.
[10] 梁坚伟, 黄梅鹏, 刘伟, 等. MgO与Y₂O₃共掺杂对透明氧化铝陶瓷组织与性能的影响[J]. 粉末冶金材料科学与工程, 2019, 24(6): 557-562.
LIANG Jianwei, HUANG Meipeng, LIU Wei, et al.Effect of Co-doping of MgO and Y₂O₃ on the structure and properties of transparent alumina ceramics[J]. Materials Science and Engineering of Powder Metallurgy, 2019, 24(6): 557-562.
[11] YEE N, FEIN J B, DAUGHNEY C J.Experimental study of the ph, ionic strength, and reversibilitybehavior of bacteria-mineral adsorption[J]. Geochimica Et Cosmochimica Acta, 2000, 64(4): 609-617.
[12] ROSSI G, BURKE J E.Influence of Additives on the Microstructure of Sintered Al₂O₃[J]. Journal of the American Ceramic Society, 1973, 56(12): 654-659.
[13] 杨秋红, 曾智江, 徐军, 等. La₂O₃对氧化铝透明陶瓷显微结构和透光性能的影响[J]. 中国稀土学报, 2005, 23(6): 713-716.
YANG Qiuhong, ZENG Zhijiang, XU Jun, et al.The effect of La₂O₃ on the microstructure and light transmittance of transparent alumina ceramics[J]. Journal of the Chinese Rare Earth Society, 2005, 23(6): 713-716.
[14] 张志林, 伍尚华, 游洋. 常压烧结制备亚微米晶Al₂O₃陶瓷及其力学性能研究[J]. 材料导报, 2014, 28(24): 111-114.
ZHANG Zhilin, WU Shanghua, YOU Yang.Atmospheric pressure sintering to prepare sub-micron Al₂O₃ ceramics and its mechanical properties[J]. Materials Reports, 2014, 28(24): 111-114.
[15] CHU M, RAHAMAN M N, De Jonghe L C, et al. Effect of heating rate on sintering and coarsening[J]. Journal of the American Ceramic Society, 2010, 74(6): 1217-1225.
[16] WANG J, RAJ R.Estimate of the activation energies for boundary diffusion from rate-controlled sintering of pure alumina, and alumina doped with Zirconia or Titania[J]. Journal of the American Ceramic Society, 2010, 73(5): 1172-1175.
[17] YOUNG W S, CUTLER I B.Initial sintering with constant rates of heating[J]. Journal of the American Ceramic Society, 2010, 53(12): 659-663.
[18] WOOLFREY J L, BANNISTER M J.Nonisothermal techniques for studying initial-stage sintering[J]. Journal of the American Ceramic Society, 2010, 55(8): 390-394.
[19] 鲁欣欣, 刘伟, 李林, 等. MgO-Y₂O₃-Re₂O₃添加对氮化硅陶瓷微观组织及性能的影响[J]. 粉末冶金材料科学与工程, 2019, 24(6): 536-541.
LUXinxin, LIU Wei, LI Lin, et al.Effects of MgO-Y₂O₃-Re₂O₃ on microstructure and properties of Si₃N₄ ceramics[J]. Materials Science and Engineering of Powder Metallurgy, 2019, 24(6): 536-541.