Print Email Facebook Twitter The effect of SiC particle size on the healing efficiency of alumina at high temperatures Title The effect of SiC particle size on the healing efficiency of alumina at high temperatures Author Boatemaa, L. Zhou, J. Van der Zwaag, S. Sloof, W.G. Faculty Mechanical, Maritime and Materials Engineering Department Materials Science and Engineering Date 2013-06-16 Abstract Structural ceramics like alumina are usually brittle and sensitive to flaws leading to a reduction in their mechanical properties. This situation is worsened by machining prior to service and during service by contact, which introduces micro cracks and hidden damages. Crack damage can easily be developed in such ceramics when loaded, which often leads to catastrophic failure. However, if sacrificial SiC healing particles are embedded into the matrix of alumina, then the cracks can be healed by exposure at high temperatures in an oxidizing environment. Then, the cracks are filled with SiO2 restoring the strength of the composite and thereby prolonging its lifetime. Reducing the size of the SiC healing particles while keeping the volume fraction the same, will increase the efficiency and lowers the onset temperature of the oxidation induced crack healing. Subject self-healingAl2O3SiChigh temperatureoxidation kinetics To reference this document use: http://resolver.tudelft.nl/uuid:b10f335a-5f49-46a4-ada1-ce80ca25e6ee Publisher Magnel Laboratory for Concrete Research ISBN 9789082073713 Source uuid:3078d20c-2173-4c13-a4d7-106207c78577 Source ICSHM 2013: Proceedings of the 4th International Conference on Self-Healing Materials, Ghent, Belgium, 16-20 June 2013 Part of collection Institutional Repository Document type conference paper Rights (c) 2013 The Author(s) Files PDF Boatemaa_2013.pdf 706.21 KB Close viewer /islandora/object/uuid:b10f335a-5f49-46a4-ada1-ce80ca25e6ee/datastream/OBJ/view