Chemical polishing of scaffolds made of ti-6Al-7Nb alloy by additive manufacturing

QUOTING:

E. Chlebus, E. Łyczkowska, B. Dybała, P. Szymczyk, Chemical polishing of scaffolds made of ti-6Al-7Nb alloy by additive manufacturing, Archives of Civil and Mechanical Engineering 14 (4), (2014) 586-594. doi:10.1016/j.acme.2014.03.001
Chlebus E., Łyczkowska E., Dybała B., Szymczyk P.,

Abstract

The titanium-aluminium-niobium alloy is used in bone, dental and articular prosthetics, where high final surface quality is required. Bone scaffolds for tissue engineering require optimized cellular structures to provide pore diameters allowing the growth of osteoblasts. The aim of the presented paper is to estimate the quality of surface treatment of components with complex spatial structure, made of Ti-6Al-7Nb alloy by powder-bed selective laser melting (SLM), which is one of the additive manufacturing technologies for metal materials. Test pieces were subjected to chemical polishing to improve surface quality and remove loose powder particles trapped in the porous structure. It was found that resulting surface roughness and reduction of the number of non-melted powder particles on the scaffold surface are influenced mostly by chemical composition and concentration of the bath, as well as the method of medium delivery and exchange during the process. Further investigations were aimed at optimizing the process and increasing the number of workpieces processed in a single lot. (C) 2014 Politechnika Wroclawska. Published by Elsevier Urban & Partner Sp. z o.o. All rights reserved.

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The Faculty of Environmental Engineering and Geodesy

Institute of Environmental Engineering

Wrocław University of Environmental and Life Sciences

Address:
pl. Grunwaldzki 24,
50-363 Wrocław

Project assumptions

The overall goal of the project is to develop an innovative multifactor mathematical model enabling monitoring of bath contamination used in the electropolishing process of austenitic stainless steels. This model will allow optimization and reduction of process costs and will have an impact on reducing environmental pollution during electrolytic polishing of austenitic stainless steels.

The final outcome of the project will consist in the development of a method of monitoring the gradual contamination of the electropolishing bath.

Team

The team deals with research in the field of electrochemistry, wastewater treatment, monitoring and optimization of processes in laboratory and industrial conditions. The diverse experience of individual members of the IonsMonit team is its strength.

 


 

Project: “A pioneering model for monitoring pollution of electropolishing process baths (IonsMonit)” financed by the National Center for Research and Development as part of the Lider programme.

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