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1735855 
Book/Book Chapter 
PREPARATION AND THEIR MECHANICAL PROPERTIES OF Al(2)O(3)/Ti COMPOSITE MATERIALS 
Rocha-Rangel, E; Refugio-Garcia, E; Miranda-Hernandez, JG; Terres-Rojas, E; Diaz de la Torre, S 
2010 
Ceramic Transactions 
214 
111-116 
WOS:000287225200013 
The effect of different titanium additions (0.5, 1, 2 and 3 wt %) and the milling intensity (4 and 8 h) in a Symoloyer mill on the microstructure and fracture toughness of Al(2)O(3)-based composite materials is analyzed in this work. After high energy milling of Al(2)O(3)-Ti powder mixtures, it was obtained small particles with main size of about 150 nanometers. The microstructures observed by SEM present the formation of a small and fine metallic net inside the ceramic matrix. From fracture toughness measurements made by the indentation fracture method, it was observed that when the concentration of titanium increases, the fracture toughness of the composites also increases. Enhance in the fracture toughness is due to the bridging formation by the metal in the ceramic matrix. On the other hand, with milling times of 8 h combined with sintering temperatures of 1500 degrees C during 1 h, they were obtained well consolidated bodies.