CUED Publications database

The development of a scanning strategy for the manufacture of porous biomaterials by selective laser melting.

Stamp, R and Fox, P and O'Neill, W and Jones, E and Sutcliffe, C (2009) The development of a scanning strategy for the manufacture of porous biomaterials by selective laser melting. J Mater Sci Mater Med, 20. pp. 1839-1848.

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Abstract

Porous structures are used in orthopaedics to promote biological fixation between metal implant and host bone. In order to achieve rapid and high volumes of bone ingrowth the structures must be manufactured from a biocompatible material and possess high interconnected porosities, pore sizes between 100 and 700 microm and mechanical strengths that withstand the anticipated biomechanical loads. The challenge is to develop a manufacturing process that can cost effectively produce structures that meet these requirements. The research presented in this paper describes the development of a 'beam overlap' technique for manufacturing porous structures in commercially pure titanium using the Selective Laser Melting (SLM) rapid manufacturing technique. A candidate bone ingrowth structure (71% porosity, 440 microm mean pore diameter and 70 MPa compression strength) was produced and used to manufacture a final shape orthopaedic component. These results suggest that SLM beam overlap is a promising technique for manufacturing final shape functional bone ingrowth materials.

Item Type: Article
Uncontrolled Keywords: Biocompatible Materials Bone Substitutes Bone and Bones Humans Implants, Experimental Lasers Materials Testing Orthopedics Particle Size Porosity Pressure Prostheses and Implants Prosthesis Design Spine Surface Properties Titanium
Subjects: UNSPECIFIED
Divisions: Div E > Production Processes
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:21
Last Modified: 30 Oct 2014 19:05
DOI: 10.1007/s10856-009-3763-8