Combustion synthesis and characteristics of aluminum oxynitride ceramic foams
Combustion synthesis and characteristics of aluminum oxynitride ceramic foams
复制标题
氧氮化铝泡沫陶瓷的燃烧合成及特性
DOI：
10.1016/j.ceramint.2012.03.018
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发表时间：
2012-08-01
影响因子：
5.2
通讯作者：
Ye, Guorui
中科院分区：
文献类型：
--
作者：
Zheng, Yongting;Li, Hongbo;Ye, Guorui
以Al和Al 2 O3为原料，在高氮压下采用燃烧合成法制备了氮氧化铝泡沫陶瓷。通过引入Al（NO3）（3）中心点9 H（2）O作为活性造孔剂，制备了孔分布均匀的AlON泡沫陶瓷。系统研究了Al（NO3）3中心点9 H（2）O含量对燃烧过程、气孔含量和结构的影响。实验结果表明，当Al（NO3）3中心点9 H（2）O含量为30%时，可制得气孔分布均匀、不连续的多孔AlON陶瓷，其中阿基米德法测得的闭孔率为80%。压汞法测得的孔分布表明，由于孔融合条件和熔体粘度的不同，在泡沫中形成了多种直径的孔。皇冠版权所有（C）2012由Elsevier Ltd和Techna Group S.r.l. All rights reserved.
Aluminum oxynitride (AlON) ceramic foams were prepared by combustion synthesis using Al and Al2O3 as starting materials under high nitrogen pressure. By introducing Al(NO3)(3)center dot 9H(2)O into reactants as active pore-forming agent, AlON ceramic foams with well-distributed pores were cost-effectively fabricated. The influences of Al(NO3)(3)center dot 9H(2)O content on the combustion process, pore content and structure were studied systematically. The experiment results showed that porous AlON ceramics containing evenly distributed and noncontiguous pores were obtained when Al(NO3)(3)center dot 9H(2)O content was 30%, in which the closed porosity of 80% was found by Archimedes' method. Pore distribution measured by mercury intrusion porosimetry indicated that pores with several types of diameter were formed in the foams because of the different conditions of pore fusion and molten viscosity. Crown Copyright (C) 2012 Published by Elsevier Ltd and Techna Group S.r.l. All rights reserved.