2024-03-29T09:05:06Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/374572016-05-03T09:42:07Zcom_10261_78com_10261_3col_10261_331
2011-07-04T09:42:12Z
urn:hdl:10261/37457
Consolidation of flaw-tolerant layered structures by the insertion of reactive layers
Ferrari-Fernández, Begoña
Bueno, Salvador
Baudín de la Lastra, Carmen
Alumina
Aluminium Titanate
The processing parameters to obtain a laminate consisting of very thin alumina-aluminium titanate crack deflecting layered
structures sandwiched between relatively thick load bearing alumina layers are described. The optimum processing
conditions for the insertion of reactive layers to improve joining during sintering have been established. Pre-sintered alumina
tapes were used as the load bearing components while the internal structures were shaped by a combination of electrophoretic
deposition (EPD) and dipping. The dipped layers acted as reactive layers during sintering. The thickness of the dipped layers
has to be controlled in order to avoid the disappearance of the EPD structure during sintering as well as the cracking of the
coating during drying or handling. The specimens were mechanically tested in three points bending with the applied load
perpendicular to the layers and the fracture surfaces were observed by scanning electron microscopy. The obtained structure
presents crack deflection at the microstructural scale during fracture which confers it flaw tolerance.
2011-07-04T09:42:12Z
2011-07-04T09:42:12Z
2009
artículo
Bol. Soc. Esp. Ceram. V. 48, 5, 261-266 (2009)
0366-3175
http://hdl.handle.net/10261/37457
eng
http://boletines.secv.es/upload/2009112090805.200948261.pdf
openAccess
Sociedad Española de Cerámica y Vidrio