Advances in Ceramics - Characterization, Raw Materials, Processing, Properties, Degradation and Healing 2011
DOI: 10.5772/22893
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Crack-Healing Ability of Structural Ceramics and Methodology to Guarantee the Reliability of Ceramic Components

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Cited by 9 publications
(8 citation statements)
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“…Filler loading volume fraction ϕ MAX is supposed to have a strong impact on the healing kinetics as indicated by values of m ranging from 2.5 (700°C and 900°C) and 1.6 (1100°C). Compared to the activation energies reported for the oxidation of MAX phase ceramics (Cr 2 AlC E a ≈ 300 kJ/mol, Ti 3 (Al,Si)C 2 E a ≈ 151.7 kJ/mol) and oxidation induced crack healing of a variety of ceramics and ceramic composites (Si 3 N 4 E a ≈ 130–150 kJ/mol, and SiC repair filler loaded Si 3 N 4 E a ≈ 280 kJ/mol, Al 2 O 3 E a ≈ 330 J/mol, Al 6 Si 2 O 13 E a ≈ 410 kJ/mol, respectively). The values of apparent E a derived from our experimental data are an order of magnitude smaller.…”
Section: Resultsmentioning
confidence: 99%
“…Filler loading volume fraction ϕ MAX is supposed to have a strong impact on the healing kinetics as indicated by values of m ranging from 2.5 (700°C and 900°C) and 1.6 (1100°C). Compared to the activation energies reported for the oxidation of MAX phase ceramics (Cr 2 AlC E a ≈ 300 kJ/mol, Ti 3 (Al,Si)C 2 E a ≈ 151.7 kJ/mol) and oxidation induced crack healing of a variety of ceramics and ceramic composites (Si 3 N 4 E a ≈ 130–150 kJ/mol, and SiC repair filler loaded Si 3 N 4 E a ≈ 280 kJ/mol, Al 2 O 3 E a ≈ 330 J/mol, Al 6 Si 2 O 13 E a ≈ 410 kJ/mol, respectively). The values of apparent E a derived from our experimental data are an order of magnitude smaller.…”
Section: Resultsmentioning
confidence: 99%
“…Literatürdeki çalışmalarda [13][14][15][16][25][26][27][28][29][30][31][32][33][34][35][36], ikinci faz olarak genellikle partikül veya visker morfolojisinde olan silisyum karbür (SiC) kullanıldığı görülmektedir. Matris olarak ise çoğunlukla alümina (Al2O3) veya oksitli seramikler kullanılmaktadır.…”
Section: Seramiklerde Kendini Iyileştirme Mekanizmasıunclassified
“…Matris içerisine dağıtılmış (disperse edilmiş) olan SiC partikülleri, malzemenin kırılma tokluğunu iyileştirme etkisinin yanında kendini onarabilme (self-healing) özelliği de kazandırmaktadır. Yapıdaki disperse edilmiş silisyum karbürün yüksek sıcaklıkta (1000 -1300 °C) oksidasyonu sonucunda seramik bünyesindeki çatlakların tamamen kapandığı ve malzemenin tekrar dayanım kazandığı belirtilmektedir [13,14,[25][26][27][28]37]. Bu mekanizma Şekil 2'de şematik olarak özetlemiştir.…”
Section: Seramiklerde Kendini Iyileştirme Mekanizmasıunclassified
“…Other work has shown that the use of steel and stainless‐steel fibers in refractory ceramics increased the fracture toughness and resistance to thermal shock . Fibers have also been used as a reinforcing phase and as a material that can promote crack‐healing of damaged ceramics …”
Section: Common Failure Modes Of Precast Monolithicsmentioning
confidence: 99%