TY - GEN
T1 - Synthesis, shaped and mechanical properties of hydroxyapatite-anatase biomaterials
AU - Nava-Miranda, Roberto
AU - Téllez-Jurado, Lucia
AU - Rocha-Rangel, Enrique
PY - 2012
Y1 - 2012
N2 - Hydroxyapatite powder was synthesized by the precipitation technique, starting from aqueous solutions of phosphoric acid and calcium hydroxide. To the hydroxyapatite powders were added 5, 10 or 20 wt % titanium oxide (anatase) as a reinforcing agent, powders were mixed by high energy mechanical milling during different times (0.5, 0.75 and 1h) in order to obtain homogeneous mixtures. With the powder mixture it was manufactured a paste, same that was extruded to obtain a solid cylinder using a stainless steel die. Finally, extruded cylinders were sintered in an electrical furnace at 1100°C during 1 h. Synthesized materials were characterized by IR, XRD, SEM and mechanically. XRD results show that in the sintered products are present mainly the crystalline phases; hydroxyapatite and titanium oxide in anatase form, these phases also could be identified in the infrared analysis. After milling, powders present sizes smaller than 5 microns. Microhardness and fracture toughness was similar to the values of human bone reported in literature of these same properties.
AB - Hydroxyapatite powder was synthesized by the precipitation technique, starting from aqueous solutions of phosphoric acid and calcium hydroxide. To the hydroxyapatite powders were added 5, 10 or 20 wt % titanium oxide (anatase) as a reinforcing agent, powders were mixed by high energy mechanical milling during different times (0.5, 0.75 and 1h) in order to obtain homogeneous mixtures. With the powder mixture it was manufactured a paste, same that was extruded to obtain a solid cylinder using a stainless steel die. Finally, extruded cylinders were sintered in an electrical furnace at 1100°C during 1 h. Synthesized materials were characterized by IR, XRD, SEM and mechanically. XRD results show that in the sintered products are present mainly the crystalline phases; hydroxyapatite and titanium oxide in anatase form, these phases also could be identified in the infrared analysis. After milling, powders present sizes smaller than 5 microns. Microhardness and fracture toughness was similar to the values of human bone reported in literature of these same properties.
UR - http://www.scopus.com/inward/record.url?scp=84867903631&partnerID=8YFLogxK
U2 - 10.1002/9781118491867.ch6
DO - 10.1002/9781118491867.ch6
M3 - Contribución a la conferencia
SN - 9781118273364
T3 - Ceramic Transactions
SP - 45
EP - 54
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 -