Abstract
Carbon fiber (Cf) with high thermal conductivity was introduced into the alumina based composites. To avoid oriented alignment of carbon fibers and carbothermal reactions during the sintering process, the Al2O3/glass/Cf substrate was hot pressed under a segmental pressure procedure at 1123 K. Experimental results showed that the thermal conductivity of Al2O3/glass/Cf increased with the contents of Cf when the volume of Cf was below 30%. The thermal conductivity of Al2O3/30% glass/30% Cf was as high as 28.98 W.(mK)–1, which was 4.56 times and 2.23 times higher than that of Al2O3/30% glass and AlN/30% glass, respectively. However, the thermal conductivity of Al2O3/glass/Cf decreased with the contents of Cf when the volume of Cf was over 30%. In the Al2O3/30% glass/30% Cf composite, carbon fibers lapped with each other and formed a three dimensional network in the matrix. The three dimensional network of carbon fibers brought excellent heat conducting performance to the Al2O3/30% glass/30% Cf composite.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
