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The Elastic Modulus and Fracture of Boron Carbide
Author(s) -
HOLLENBERG G. W.,
WALTHER G.
Publication year - 1980
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1980.tb09845.x
Subject(s) - fractography , materials science , boron carbide , porosity , composite material , modulus , fracture (geology) , boron , young's modulus , elastic modulus , surface energy , bulk modulus , mineralogy , chemistry , organic chemistry
Young's modulus at room temperature and the fracture surface energy, up to 1200°C, were determined for boron carbide specimens with 0 to 15% porosity. Sonic modulus measurements indicated that the Young's modulus decreased as porosity increased in a manner characteristic of the cylindrical pore model. The fracture surface energy appeared to be independent of porosity but was inversely related to temperature. Fractography supported the low values of fracture surface energy that were obtained.