23 Jul Preparation method of porous titanium/hydroxyapatite composite material
Abstract
The invention relates to a preparation method of a porous titanium/hydroxyapatite composite material, and belongs to the technical field of biomedical material preparation. According to the method, metal pure titanium powder and hydroxyapatite ceramic powder are uniformly mixed; after the materials are uniformly mixed, the mixture is mixed with ammonium hydrogen carbonate to obtain mixed powder; the mixed powder is mechanically pressed into blocky pressed green compacts; then, the blocky pressed green compacts are put into a discharging plasma sintering furnace to be sintered in a gradient heating mode; demolding is performed, and the titanium/hydroxyapatite composite material is obtained. The porous titanium/hydroxyapatite composite material obtained through preparation has the characteristics that the elasticity modulus is low; the pore parameters are controllable; the physical adaptability is good, and the like. The porous titanium/hydroxyapatite composite material also has good bioactivity and bone combining capability. Along with the bone induction effect of the hydroxyapatite in the human body, the bone tissues are gradually induced to grow into the pores to realize the biological fixation, so that the bone integration effect is greatly improved. The material is particularly applicable to biomedical engineering with human body hard tissue defects, such as artificial joints, artificial bones and dental implants.
Year: 2016
Country: CN
Doc No: 105251057