An international conference connecting people
in CAD research, education and business
Copyright (C) CAD Solutions, LLC. All rights reserved.
Proceedings of CAD'15, 2015, 492-497
Rapid Prototyping and Thermal Gradient Method Applied to Fabrication Porous Structure for Application in Biomedical Field
Abstract. The objective of this work controlled porosity of Hydroxyapatite (Hap) ceramics for bio medical Application using thermal gradient and vertex tube for separation of solvent and two lasers are used Nd:YAG and CO_2. The energy absorbed for CO_2laser is about 20%,for Nd:YAG or famto second laser is Approximately 40-80% ,and using Q-switch technology power of laser and over all process can control effectively. Along with main nozzle transient controlling function two nozzle are added one for solvent and one for powder. Porous Hydroxyapatite (Hap) is expected to have desired mechanical and biological properties for biomedical applications. However, due to material processing problems, to date, this material can only be prepared by conventional techniques which are time consuming and unpredictable specially controlling porosity and density which highly recommended factor for biomedical application. Three stage heating with two laser arrangements for gradual temperature change so that transformation is is faster but diffusion is limited to surface diffusion only. Primary result shows mechanical properties and porosity is as per bone structure. The micro structural characterizations such as phase purity and composition of porous BCP granules were performed and verified by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR) analysis.
Keywords. Rapid prototyping (RP), Biomaterial, Hydroxyapatite