The Surface Morphology and Electrochemical Properties of Pure Titanium Obtained by Selective Laser Melting Method

Abstract:

High requirements in biomedical application are associated with biocompatibility and high corrosion resistance of metal biomaterials, which are used equally in joint and bon substitution and the healing and renewal of bone weaknesses. In this paper the surface morphology and electrochemical properties of samples manufactured by Selective Laser Melting SLM method using pure titanium Grade II powder material are explored. The tested samples were produced divided into four group, depended on the values of basic process parameters – laser power P, scanning speed SP and point distance PD. The value of energy density E delivered to the sintered material was constants and was an approximately E = 75 ± 2 J/mm³. In the paper, the pitting corrosion test by recording anodic polarization curves and electrochemical spectroscopy test were carried out. Additionally the microscopic observation and microchemical analysis by SEM/EDS analysis and material density measurements were performed too. Based on the obtained results it can be concluded that the laser power P and scanning speed SP have a significant affect on the obtained full density defect free material with high corrosion resistance.

• Periodical: Solid State Phenomena (Volume 308)
• Pages: 21-32
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.308.21
• Online since: July 2020
• Authors: Anna Woźniak*, Marcin Adamiak, Bogusław Ziębowicz
• Keywords: EIS, Grade II, Pitting Corrosion Test, SLM

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