1990
DOI: 10.1016/0266-3538(90)90107-g
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Steady-state creep of hot-pressed SiC whisker-reinforced silicon nitride

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Cited by 36 publications
(21 citation statements)
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“…(1)], has been taken into evaluation. Therefore, they corrected the data cited by Lessing et al, 2 Okamoto et al 8 and Nixon et al 15 multiplying the strain rate, ε * , by d p ; p = 2 and 3, respectively, and compared the obtained normalized ε * × d p -σ plots with their own results corrected on the same way. The scatter of the results was significantly reduced, especially using grain size exponent p = 3.…”
Section: Creep Behaviormentioning
confidence: 96%
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“…(1)], has been taken into evaluation. Therefore, they corrected the data cited by Lessing et al, 2 Okamoto et al 8 and Nixon et al 15 multiplying the strain rate, ε * , by d p ; p = 2 and 3, respectively, and compared the obtained normalized ε * × d p -σ plots with their own results corrected on the same way. The scatter of the results was significantly reduced, especially using grain size exponent p = 3.…”
Section: Creep Behaviormentioning
confidence: 96%
“…Different stationary creep mechanisms; Nabarro-Herring, 23, 24 Coble, 25 flow of hard grains in a viscous phase, 16 or solution-precipitation in the presence of a viscous phase 26 have been proposed for mullite. 2,[4][5][6]8,9,[14][15][16] Nabarro-Herring 23,24 and Coble 25 mechanisms or diffusional accommodating grain boundary sliding predict stress exponents close to 1 and grain size exponent, p, between 2 and 3. When the diffusion takes place through the volume of grain p = 2, and when the diffusion takes place in grain boundaries 26 p = 3.…”
Section: Creep Behaviormentioning
confidence: 99%
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“…Sin embargo, la enorme disparidad de valores de la energía de activación (400-1000 kJ.mol -1 ) ha complicado la aplicación e interpretación de los modelos clásicos de acomodación por difusión 15-17, 19, 22-28 . Más recientemente, algunos autores 19,24,26,32 , han propuesto que el mecanismo de acomodación de solución-reprecipitación (como el debido a Wakai 33 , el más comúnmente citado en la literatura) podría ser el activo en la mullita. Por un lado, la disparidad en Q quedaría explicada en el modelo de solución-reprecipitación por la gran sensibilidad de los pasos limitadores del proceso (disolución, transporte y reprecipitación) a cantidades muy pequeñas de impurezas, de difícil eliminación en la mullita 7 .…”
Section: 1-mullita Spunclassified
“…Algunos ejemplos son los trabajos sobre la fluencia en flexión [15][16][17][18][19] , tracción 20 y compresión [21][22][23][24][25][26][27][28] . La atención específica al comportamiento de materiales con fases secundarias vítreas bien controladas ha sido menor.…”
Section: -Introducciónunclassified