摘要
报道了基于Isobam注凝成型工艺制备的CNTs/Al2O3复合陶瓷材料。研究了Isobam对CNTs和Al2O3粉体分散效果的影响,CNTs含量对混合陶瓷悬浮体流变性能以及复合材料坯体和烧结体性能的影响。结果表明,当Isobam含量为5%(质量分数),pH值=9~10时,CNTs悬浮液的分散效果最佳。随着CNTs的添加量的增加,混合悬浮体的粘度逐渐升高,凝胶时间呈现先降低后升高的趋势。当CNTs含量为0.3%(质量分数)时,相比于相同条件下纯氧化铝陶瓷,CNTs增强Al2O3复合陶瓷的断裂韧性提高了23.7%。
Preparation and properties of carbon nanotubes/alumina based on Isobam gelation forming was reported. The effect of Isobam on dispersion of CNTs and Al2O3 suspensions was studied. The influence of CNTs concentration on the rheological property of composite suspensions was investigated. The compressive strength of composite green bodies and the mechanical properties of sintered ceramics with different content CNTs were characterized. The results showed that the well disperse CNTs suspension could be prepared with 0.5wt% Isobam at pH 9-10. The viscosity of the composite suspension raised gradually with the CNTs content increased, and the gel time was shortened first and then increased. The fracture toughness of the CNTs/Al2O3 composite ceramics with 0.3wt% CNTs was 23.7% higher than that of pure alumina ceramic under the same preparing condition.
作者
杨洁
干科
鲁毓钜
王亚利
吕琳
张笑妍
刘静静
杨金龙
YANG Jie;GAN Ke;LU Yuju;WANG Yali;LYU Lin;ZHANG Xiaoyan;LIU Jingjing;YANG Jinlong(College of Civil Engineering, Hebei University of Engineering, Handan 056038, China;State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;School of Materials Science and Engineering, North University of China, Taiyuan 030051,China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2019年第9期9208-9214,共7页
Journal of Functional Materials
基金
国家自然科学基金资助项目(51572140)
中国博士后科学基金资助项目(2018M630149,2018M630151,2018M630154,2018M631492)
文化和旅游部文化科技司重点实验室资助项目(20181140279)
