23 Jul Preparation method of HAP/TCP/TTCP (hydroxylapatite/tricalcium phosphate/tetracalcium) multiphase porous ceramic artificial bone
Abstract
The invention belongs to the field of manufacturing and bone tissue engineering, and particularly relates to a preparation method of HAP/TCP/TTCP (hydroxylapatite/tricalcium phosphate/tetracalcium) multiphase porous ceramic artificial bone. According to the method provided by the invention, the nano HAP powder is selectively sintered with laser, and the characteristic of high energy density of the laser beam can be used to quickly heat the powder layer to high temperature to partially decompose HAP into TCP and TTCP to obtain the HAP/TCP/TTCP multiphase porous ceramic artificial bone. The method has the advantages that the inter-phase conversion time can be controlled by adjusting the laser power and scanning speed to realize adjustment of the content of each phase and achieve an aim of biodegradability regulation. The formed multiphase ceramic artificial bone scaffold has controllable biodegradability and good biocompatibility as well as appearance consistent with the implanting position and interconnected and controllable pore distribution.
Year: 2014
Country: CN
Doc No: 103656737