TY - GEN
T1 - Alumina-based composites reinforced with titanium nanoparticles
AU - Rocha-Rangel, Enrique
AU - Rodríguez-García, José A.
AU - Mundo-Solís, Sergio
AU - Gutiérrez-Paredes, Juliana G.
AU - Refugio-García, Elizabeth
PY - 2012
Y1 - 2012
N2 - In this study it was explored the effect of titanium nanoparticles additions on the fracture toughness of Al2O3-based composites. Mixtures of alumina with different titanium amounts (0.5, 1, 2, 3 vol. %) were high energy grinded in a Symoloyer mill during 8h. After milling, the powder was constituted by very fine particles of 200 nm average sizes, presenting good titanium and alumina particles sharing. Microstructure observations by electron microscopy of uniaxial compacted and pressureless sintered samples, illustrate dense composite materials with fine and homogeneous distribution of titanium in the alumina-matrix. From fracture toughness measurements, that was estimated by the fracture indentation method, it has determined that titanium additions improved fracture toughness until more than 50% with respect to the fracture toughness of monolithic-alumina. This behavior can be due to the formation of metallic bridges by titanium in the alumina-matrix.
AB - In this study it was explored the effect of titanium nanoparticles additions on the fracture toughness of Al2O3-based composites. Mixtures of alumina with different titanium amounts (0.5, 1, 2, 3 vol. %) were high energy grinded in a Symoloyer mill during 8h. After milling, the powder was constituted by very fine particles of 200 nm average sizes, presenting good titanium and alumina particles sharing. Microstructure observations by electron microscopy of uniaxial compacted and pressureless sintered samples, illustrate dense composite materials with fine and homogeneous distribution of titanium in the alumina-matrix. From fracture toughness measurements, that was estimated by the fracture indentation method, it has determined that titanium additions improved fracture toughness until more than 50% with respect to the fracture toughness of monolithic-alumina. This behavior can be due to the formation of metallic bridges by titanium in the alumina-matrix.
UR - http://www.scopus.com/inward/record.url?scp=84867919549&partnerID=8YFLogxK
U2 - 10.1002/9781118491867.ch18
DO - 10.1002/9781118491867.ch18
M3 - Contribución a la conferencia
AN - SCOPUS:84867919549
SN - 9781118273364
T3 - Ceramic Transactions
SP - 167
EP - 173
BT - Processing and Properties of Advanced Ceramics and Composites IV
PB - American Ceramic Society
T2 - Int. Symposia on Innovative Processing and Synthesis of Ceramics, Glasses and Composites, Advances in Ceramic Matrix Composites and Microwave Processing of Materials, Held During the Materials Sci. and Technol. 2011 Conf. and Exhibition, MS and T'11
Y2 - 16 October 2011 through 20 October 2011
ER -