Tensile strength and creep behavior of Carbon-Carbon composites at elevated temperatures

Ken Goto, Hiroshi Hatta, Yasuo Kogo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Tensile strength and creep behavior of a carbon-carbon composite (C/C) reinforced with a high modulus type PAN based carbon fiber (C/C (M40)) and a C/C reinforced with a low modulus type carbon fiber (C/C (T300)) were examined from room temperature to 2773 K in an inert atmosphere. Tensile strength of both C/Cs at the elevated temperatures enhanced up to 2273 K. Over 2273 K, tensile strength of the C/C (M40) continued to increase, on the other hand, tensile strength of C/C (T300) degraded. Tensile strength of C/C (T300) could not be obtained at 2773 K due to the decline of applied stress during tensile test by rapid creep deformation. Creep deformation appeared from 1873 K in both C/Cs regardless to the types of the reinforcing carbon fibers. No variation was found in the activation energy, however, C/C reinforced with a higher modulus carbon fiber exhibited lower stress exponent. The creep resistance of C/Cs could be enhanced by a carbon fiber processed at higher heat treatment temperature. The heat treatment of a C/C itself also enhanced creep resistance, however, its effect could not reach to that from the heat treatment of a carbon fiber.

Original languageEnglish
Title of host publicationDesign, Manufacturing and Applications of Composites
Subtitle of host publicationProceedings of the 7th Joint Canada-Japan Workshop on Composites
Number of pages1
Publication statusPublished - 1 Dec 2008
EventDesign, Manufacturing and Applications of Composites: 7th Joint Canada-Japan Workshop on Composites - Fujisawa, Kanagawa, Japan
Duration: 28 Jul 200831 Jul 2008

Publication series

NameDesign, Manufacturing and Applications of Composites: Proceedings of the 7th Joint Canada-Japan Workshop on Composites

Conference

ConferenceDesign, Manufacturing and Applications of Composites: 7th Joint Canada-Japan Workshop on Composites
CountryJapan
CityFujisawa, Kanagawa
Period28/07/0831/07/08

Cite this

Goto, K., Hatta, H., & Kogo, Y. (2008). Tensile strength and creep behavior of Carbon-Carbon composites at elevated temperatures. In Design, Manufacturing and Applications of Composites: Proceedings of the 7th Joint Canada-Japan Workshop on Composites (Design, Manufacturing and Applications of Composites: Proceedings of the 7th Joint Canada-Japan Workshop on Composites).