Ceramic Nano Composites for Thermal Insulators

Abstract:

In this research, nanopore composite had an effect on enhancing thermal property and mechanical property. The nanopore composite maintained the pore structure and enhanced mechanical property. Al₂O₃ xerogel was collapsed after heat treatment over 1000°C and they had weak mechanical strength because of pores. For maintenance of pore at high temperature and improvement of mechanical strength, Al₂O₃ whisker was hybridized. The Al₂O₃ whiskers in nanopore composite play the role of pillar during heat treatment. The mechanical property of Al₂O₃ xerogel was improved through complexation with Al₂O₃ whisker. The elastic modulus of nanopore composite increased 225 % from Al₂O₃ xerogel.

• Periodical: Advanced Materials Research (Volumes 960-961)
• Pages: 126-129
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.960-961.126
• Online since: June 2014
• Authors: Hae Noo Ree Jung, Yoon Kwang Lee, Hyung Ho Park*
• Keywords: Alumina Whisker, Alumina Xerogel, Nanocomposite, Solvothermal Drying

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