Preparation method of titanium foams for cancellous bone
A technology of foamed titanium and cancellous bone, which is applied in the field of foamed titanium materials, can solve the problems of reducing the service life of titanium and titanium alloy implant materials, unfavorable bone tissue growth, and few researches, so as to avoid stress shielding and realize Long-term fixation and simple operation
Inactive Publication Date: 2013-07-17
CHONGQING UNIV
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The invention relates to a preparation method of titanium foams for cancellous bone. The preparation method comprises the following steps of: (1) mixing raw materials, namely selecting a primary mixture which is obtained by uniformly mixing titanium powder and a pore forming agent in a grinding body, wherein the mass part ratio of the titanium powder to the pore forming agent is (42.8-48.2):(52.8-58.2); (2) carrying out one-direction pressing on the primary mixture by adopting a universal material testing machine to prepare a green pressing body, wherein the one-direction pressure is 200-250MPa, and the pressure holding time is 1 minute; and (3) putting the green pressing body into a vacuum carbon tube furnace, sintering the green pressing body for 2 hours at 1200-1300 DEG C in an argon protective atmosphere to ensure that the pore forming agent is removed, and finally cooling along with the furnace to obtain the titanium foams. According to the titanium foams prepared by using the preparation method, the Young modulus is matched with that of the cancellous bone of the human body, therefore the stress shielding phenomenon is effectively avoided, and an implant can be permanently fixed; and meanwhile, the titanium foams can be prevented from being oxidized as far as possible by adopting the argon protective atmosphere.
Technology Topic
Cancellous boneStress shielding +3
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Property | Measurement | Unit |
Granularity | 225.0 ~ 420.0 | µm |
Compressive strength | 4.0 ~ 12.0 | mPa |
Young's modulus | 0.02 ~ 0.5 | GPa |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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