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稀土氧化物和CaF2对AlN陶瓷烧结性能及热导率的影响
作者:贺智勇1 2 王峰1 2 张启富1 2 刘秋元1 2 3 千粉玲1 2 刘秀1 2 
单位:1. 中国钢研科技集团有限公司新冶集团 北京 100081 2. 特种陶瓷与耐火材料北京市重点实验室 北京 100081  3. 清华大学材料学院 北京 100084 
关键词:氧化钇–氧化铈–氟化钙 氮化铝陶瓷 气孔率 热导率 
分类号:TQ174
出版年,卷(期):页码:2018,46(6):0-0
DOI:10.14062/j.issn.0454-5648.2018.06.01
摘要:

 以4%Y2O3、3%Y2O3–1%CeO2、3%Y2O3–1%CaF2和3%Y2O3–0.5%CeO2–0.5%CaF2(质量分数)为助烧剂,于1 860 ℃制备得到了AlN陶瓷。研究了不同助烧剂体系对AlN陶瓷物相组成、显微结构、烧结性能及热导率的影响。结果表明:所得样品的物相组成中均含有AlN与钇铝酸盐相,在含有CeO2助烧剂的样品中还检测到少量的铈铝氧化物相;样品晶粒尺寸分布均在3~8 μm之间。与添加一元及二元助烧剂相比,三元助烧剂的引入能更有效促进AlN陶瓷烧结致密化,强化其导热性能。添加三元助烧剂制备得到AlN陶瓷的体积密度为3.29 g/cm3,气孔率为0.58%,热导率为184.8 W/(m•K)。

 The AlN ceramic was prepared at 1 860 ℃ with the sintering aids of 4%Y2O3, 3%Y2O3–1%CeO2,3%Y2O3–1%CaF2 and 3%Y2O3–0.5%CeO2–0.5%CaF2 (mass fraction) respectively. The effects of different sintering aids on the phase composition,microstructure, sintering property and thermal conductivity of AlN ceramics were investigated. The results showed that AlN and yttrium aluminate oxide phases were detected in all the samples. Some weak diffraction peaks corresponding to cerium aluminum oxide were also found in the samples with the sintering aids containing CeO2. The grain size of all the samples was in the range of 3–8 μm. Compared with the addition of single and binary sintering aids, the introduction of ternary sintering aids into the sample could promote the sintering densification of AlN ceramic and enhance its thermal conductivity. The AlN ceramic with the bulk density of 3.29 g/cm3, porosity of 0.54%, thermal conductivity of 184.8 W/(m•K) was obtained by the addition of ternary sintering aids.

基金项目:
国家科技重大专项 (2013ZX02104)资助。
作者简介:
参考文献:

 [1] KUME S, YASUOKA M, OMURA N, et al. Effects of MgO addition on the density and dielectric loss of AlN ceramics sintered in presence of Y2O3[J]. J Eur Ceram Soc, 2005, 25(12): 2791–2794.

[2] SUZUKI T S, SAKKA Y. Preparation of oriented bulk 5wt%-AlN ceramics by slip casting in a high magnetic field and sintering[J]. Scripta Mater, 2005, 52(7): 583–586.
[3] 金奇杰, 慕玮, 袁文杰, 等. 无压烧结高导热AlN陶瓷的研究进展[J]. 硅酸盐通报, 2013, 32(7): 1318–1322, 1329.
JIN Qijie, MU Wei, YUAN Weijie, et al. Bull Chin Ceram Soc (in Chinese), 2013, 32(7):1318–1322, 1329.
[4] 周和平, 廖卫国, 吴音. B2O3–Y2O3添加剂对AlN陶瓷显微结构及性能的影响[J]. 硅酸盐学报, 1996, 24(2): 146–151.
ZHOU Heping, MIAO Weiguo, WU Yin. J Chin Ceram Soc, 1996, 24(2): 146–151.
[5] 许昕睿, 庄汉锐, 徐素英. 添加Sm2O3的AlN陶瓷的显微结构和导热性能[J]. 材料研究学报, 2001, 15(3): 313–317.
XU Xinrui, ZHUANG Hanrui, XU Suying, et al. Chin J Mater Res (in Chinese), 2001, 15(3): 313–317.
[6] YU Y D, HUNDERE A M, HOIER R, et al. Microstructural characterization and microsturctural effects on the thermal conductivity of AlN(Y2O3) ceramics[J]. J Eur Ceram Soc, 2002, 22(2): 247–252.
[7] 何秀兰, 施磊, 巩庆东, 等. 热处理对AlN陶瓷的热导率及介电性能的影响[J]. 硅酸盐学报, 2015, 43(9): 1186–1191.
HE Xiulan, SHI Lei, GONG Qingdong, et al. J Chin Ceram Soc, 2015, 43(9): 1186–1191.
[8] DU X L, Qin M L, FARID A, et al. Study of rare-earth oxide sintering aid systems for AlN ceramics[J]. Mater Sci Eng A, 2007, 460–461: 471–474.
[9] 姚义俊, 刘斌, 周凯, 等. Dy和Er掺杂对AlN陶瓷显微结构及性能的影响[J]. 硅酸盐学报, 2014, 42(9): 1092–1098.
YAO Yijun, LIU Bin, ZHOU Kai, et al. J Chin Ceram Soc, 2015, 43(9): 1186–1191.
[10] CHIO H S, IM H N, KIM Y M, et al. Structure, thermal and mechanical properties of aluminum nitride ceramics with CeO2 as a sintering aid[J]. Ceram Int, 2006, 42(10): 11519–11524.
[11] QIAO L, ZHOU H P, Chen K X, et al. Effects of Li2O on the low temperature sintering and thermal conductivity of AlN ceramics[J]. J Eur Ceram Soc, 2003, 23(9): 1517–1524.
[12] 黄小丽, 马庆智, 李发, 等. CaO–Y2O3添加剂对AlN陶瓷显微结构及性能的影响[J]. 无机材料学报, 2002, 17(2): 277–282. 
HUANG Xiaoli, MA Qingzhi, LI Fa, et al. J Inorg Mater (in Chinese), 2002, 17(2): 277–282. 
[13] 周和平, 周劲松. 添加CaF2–Y2O3的Al陶瓷的显微结构及热导性质[J]. 无机材料学报, 1995, 10(4): 439–444.
ZHOU Heping, ZHOU Jinsong. J Inorg Mater (in Chinese), 1995, 10(4): 439–444.
[14] 牛锛, 赵新亮, 王孙昊, 等. 烧结助剂对AlN陶瓷制备及性能的影响[J]. 硅酸盐学报, 2010, 38(12): 2257–2261.
NIU Ben, ZHAO Xinliang, WANG Sunhao, et al. J Chin Ceram Soc, 2010, 38(12): 2257–2261.
[15] KUSUNOSE T, SEKINO T. Improvement in fracture strength in electrically conductive AlN ceramics with high thermal conductivity[J]. Ceram Int, 2016, 42(11): 13183–13189. 
[16] YAN X, WANG H, FU Z Y. Transient liquid-phase sintering of AlN ceramics with CaF2 additive[J]. J Eur Ceram Soc, 2013, 33(11): 2199–2205.
[17] KUSUNOSE T, SEKINO T, NIIHARA K. Production of a grain boundary phase as conducting pathway in insulating AlN ceramcs[J]. Acta Mater, 2007, 55(18): 6170–6175.
[18] HE X L, YE F, ZHANG H J, et al. Effect of Sm2O3 content on microstructure and thermal conductivity of spark plasma sintered AlN ceramics[J]. J Alloy Comp, 2009, 482(1/2): 345–348.
 
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