Abstract
Microstructure-property relationships in three different types of ceramic tool materials (Al2O3-4wt% Zr02, Al2O3-30wt% TiC/N and a β’-sialon (z=0.2)) have been investigated as part of a programme exploring the factors controlling tool life. Microstructures have been characterised using a wide range of techniques. Indentation testing has been employed to derive a range of near-surface deformation parameters including hardness as a function of both indentation scale and temperature, indentation fracture toughness and the microstructural control of fracture paths. Whilst the alumina-titanium carbonitride material generally showed the best room temperature properties, the sialon displayed better high temperature behaviour. Further, two compositions of α’/β’ sialon materials have been investigated, the higher α’ content material being found to possess even more superior properties.
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© 1986 Plenum Press, New York
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Yeomans, J.A., Page, T.F. (1986). On the Microstructure and Hardness Characteristics of Composite Ceramics for Tool Applications. In: Tressler, R.E., Messing, G.L., Pantano, C.G., Newnham, R.E. (eds) Tailoring Multiphase and Composite Ceramics. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-2233-7_24
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DOI: https://doi.org/10.1007/978-1-4613-2233-7_24
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