Pressureless sintering of carbon nanotube–Al2O3 composites

Negative permittivity behavior in the carbon/silicon nitride composites prepared by impregnation-carbonization approach

“…Various carbonaceous materials, such as carbon fiber [5,30], carbon nanotube [31,32] and graphene [33,34], have been used as fillers in ceramic composites to improve their mechanical or electromagnetic properties. However, the physical and chemical M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 4 incompatibility between carbonaceous materials and ceramics frequently take place in high temperature sintering process, leading to the difficulties of composites' preparation [5,31,32].…”

Mechanical and electrical properties of low SWNT content 3YTZP composites

“…SWNT freeze-drying after acid-treatment was introduced in the present work with the aim of obtaining a more homogeneous SWNT distribution. 16,33 It is clear that, although it is not possible to reduce the maximum or the mean agglomerate size by freeze-drying the nanotubes instead of drying on a hot plate, a decrease of the percentage of the CNT content that are agglomerated is achieved.…”

Processing of Alumina and Corresponding Composites

“…There are two main challenges in the processing of CNTs as fillers: the homogeneous dispersion of CNTs in the matrix and the interfacial bonding between matrix and CNTs. Figure 12 shows the microstructure of a series of alumina-CNTs compared to that of single-phase alumina processed in a similar way (Zhang, Fahrenholtz, Hilmas, & Yadlowsky, 2010). Welldispersed, independent CNTs as well as CNTs clusters are located at the grain boundaries of the alumina matrix.…”