INTEMA   05428
INSTITUTO DE INVESTIGACIONES EN CIENCIA Y TECNOLOGIA DE MATERIALES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
High temperature mechanical testing of cordierite porous ceramics
Autor/es:
M. L. SANDOVAL; M. H. TALOU; A. G. TOMBA MARTINEZ; M. A. CAMERUCCI
Lugar:
Río de Janeiro, Brasil
Reunión:
Conferencia; 11 International Conference on Advanced MaterialsHi; 2009
Resumen:
<!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman"; mso-ansi-language:EN-US; mso-fareast-language:PT-BR;} @page Section1 {size:612.0pt 792.0pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> Mechanical behavior of porous ceramic prepared by starch thermogelling (potato and cassava) was evaluated. Green disks were formed by thermogelling of suspensions of talc, kaolin and alumina with addition of starch as consolidator/binder and pore forming agent. Porous cordierite materials were obtained by calcination and reaction-sintering (1330°C, 4h). Mechanical behavior was evaluated in diametral compression at RT, 800, 1000 and 1100ºC. From load-displacement curve (Fig. 2), apparent stress (s)-strain (e) relationship was obtained by calculus and mechanical parameters (fracture strength, apparent Young modulus and elastic limit) were determined. The obtained results were analyzed in function of developed microstructures (Fig. 1) and testing temperatures.