Effect of mullite additions on the fracture mode of alumina

Crack mouth opening displacement controlled fracture tests of brittle ceramics

“…The Poisson's ratio for dense and fine grained alumina is 0.223 ± 0.004. 24 The value of G IC obtained was 16.4 ± 2.3 J m −2 that is about 20% lower than the value previously obtained in semi-stable tests. 16 The work of fracture, γ WOF , was calculated by dividing the work done on the specimen to propagate the crack, calculated as the integral of the load-displacement plot, by the area of the newly created surfaces (Eq.…”

Processing of Alumina and Corresponding Composites

“…The microstructure of the materials was further improved by doping with 250 ppm Y 2 O 3 (Mukhopadhyay & Todd, 2010b. Reaction sintering method has been successfully applied to fabricate alumina-mullite nanocomposites (Burgos-Montes, Moreno, & Baudín, 2010) from mixtures of microsized alumina and colloidal silica.…”

Nanoindentation of Al2O3/Al2TiO5 composites: Small-scale mechanical properties of Al2TiO5 as reinforcement phase

“…Refs. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. In these systems, effectiveness of this approach has been proven on the basis of enhanced fracture strength and toughness, damage tolerance and/or thermal shock resistance.…”