Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/17323
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Title

Mechanical Properties and Contact Damage Behavior in Aligned Silicon Nitride Materials

AuthorsBelmonte, Manuel CSIC ORCID; Miranzo López, Pilar CSIC ORCID; Osendi, María Isabel CSIC ORCID
Issue Date2007
PublisherJohn Wiley & Sons
CitationJ. Am. Ceram. Soc., 90 [4] 1157–1163 (2007)
AbstractAligned Si3N4 microstructures were achieved by seeding, extruding, and laminating methods. The degree of grain alignment was determined by microstructural measurements. Mechanical properties, including toughness, strength, hardness, and elastic modulus, as well as the contact damage response, were addressed and discussed as a function of this anisotropic microstructure. KIC values over 8MPa .m1/2 and strengths above 900 MPa were achieved for the most favorable planes in the textured material. Contact damage behavior was influenced by grain orientation in two ways, first, by conferring elliptical shape to the radial surface cracks and second, by the multiple twin/slip formation at the large seeds within the high shear strain region.
Publisher version (URL)DOI: 10.1111/j.1551-2916.2007.01620.x
URIhttp://hdl.handle.net/10261/17323
DOI10.1111/j.1551-2916.2007.01620.x
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