ISSN Print: 2472-9736  ISSN Online: 2472-9752
AASCIT Journal of Materials  
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Experimental Study and Modeling of Polytetrafluoroethylene (PTFE) and Hydroxyapatite Biocomposite Surface Treatment Using Selective Laser Sintering
AASCIT Journal of Materials
Vol.1 , No. 4, Publication Date: Oct. 10, 2015, Page: 75-82
1759 Views Since October 10, 2015, 807 Downloads Since Oct. 10, 2015
 
 
Authors
 
[1]    

M. E. Khosroshahi, Laser and Nanobiophotonics Laboratory, Biomaterial Group, Faculty of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran; Department of Mechanical & Industrial Engineering, University of Toronto, Toronto, Canada.

[2]    

H. Safaralizadeh, Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran.

[3]    

A. Anzanpour, Laser and Nanobiophotonics Laboratory, Biomaterial Group, Faculty of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran.

 
Abstract
 

The selective laser sintering (SLS) is a rapid prototyping (RP) process which uses laser surface treatment to produce consolidation of powder materials. To obtain an efficient SLS, the optical parameters such as laser power, scanning velocity as well as the material properties must be optimized. In this paper, the SLS of biocomposite of Hydroxyapatite (HA) and polytetrafluoroethylene (PTFE) as secondary polymeric binder is investigated. Microstructural assessments of the samples were conducted using scanning electron microscopy (SEM). To study the effect of laser power on the strength of specimens, pressure test were carried out. Depth of sintering layer and its correlation with laser power numerically is explored. In our case, the best sintering condition was achieved at 3 W and 1 mm/s.


Keywords
 

Selective Laser Sintering, Rapid Prototyping, Biocomposite, Polytetrafluoroethylene, Hydroxyapatite


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