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Nanostructured Ceramic Oxides with a Slow Crack Growth Resistance Close to Covalent Materials
Jérôme Chevalier, Sylvain Deville, Gilbert Fantozzi +5
Oxide ceramics are sensitive to slow crack growth because adsorption of water can take place at the crack tip, leading to a strong decrease of the surface energy in humid (or air)…
Artificial Bone and Teeth through Controlled Ice Growth in Colloidal Suspensions
Antoni P. Tomsia, Eduardo Saiz, Sylvain Deville
The formation of regular patterns is a common feature of many solidification processes involving cast materials. We describe here how regular patterns can be obtained in porous alu…
Atomic force microscopy study of the surface degradation mechanisms of zirconia based ceramics
Sylvain Deville, Jérôme Chevalier, Gilbert Fantozzi +3
Atomic force microscopy (AFM) can be used to characterise several aspects of the surface degradation and reinforcement mechanisms of zirconia based ceramics, such as crack propagat…
Phenomenological analysis of densification mechanism during spark plasma sintering of MgAl2O4
Guillaume Bernard-Granger, Nassira Benameur, Ahmed Addad +3
Spark plasma sintering (SPS) of MgAl2O4 powder was investigated at temperatures between 1200 and 1300°C. A significant grain growth was observed during densification. The densifica…
Martensitic transformation in zirconia. Part I: nanometer scale prediction and measurement of transformation induced relief
Sylvain Deville, Gérard Guénin, Jérôme Chevalier
We investigate by atomic force microscopy (AFM) the surface relief resulting from martensitic tetragonal to monoclinic phase transformation induced by low temperature autoclave agi…
Martensitic transformation in zirconia. Part II: Martensite growth
Sylvain Deville, Gérard Guénin, Jérôme Chevalier
Though the martensitic transformation in zirconia has been the object of a very large number of studies for the last decades, qualitative and quantitative observations of the forma…