Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 528, Issue 4-5, Pages 2023-2027Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2010.10.106
Keywords
Carbon foam; K2Ti6O13 whisker; Mechanical properties; Microstructure; Thermal insulating properties
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Funding
- National Natural Science Foundation of China [21071011]
- Beijing Municipal Science and Technology Program [Z09010300840902]
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Reinforced carbon foam materials were produced with phenolic resole resin as precursor and K2Ti6O13 whiskers as additives. Effects of the content of whiskers on microstructure, compressive strength and thermal properties of carbon foams were investigated. The results showed that the carbon foams had a spherical and closed cell structure, and the distribution of cells was relatively uniform. The specimens with less than 4 wt% K2Ti6O13 whiskers exhibited a higher compressive strength than neat foams. When the content exceeded 4 wt%, the irregular openings on the cell walls revealed in microstructure images led to decrease in compressive strength. The thermal conductivity went down with increasing the content of whiskers as expected, which ranged from 0.24 to 0.40 W m(-1) K-1 at room temperature. (C) 2010 Elsevier B.V. All rights reserved.
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