AI Article Synopsis

  • The study investigates the use of magnesium alloy AZ31B created through selective laser melting (SLM) for potential medical device applications.
  • The effectiveness of SLM-manufactured specimens was assessed by examining osteoblast cell survival and bacterial biofilm growth, alongside corrosion resistance tests.
  • Results indicate that, while SLM-processed AZ31B shows better corrosion resistance than conventional rolled forms, the surface characteristics may lead to higher corrosion rates, which could impact tissue engineering and cell integration.

Article Abstract

Purpose: The current study examined magnesium alloy AZ31B specimens manufactured with Additive Manufacturing method (selective laser melting - SLM) to investigate the applicability of this technology for the production of medical devices.

Methods: Osteoblast cells and bacterial biofilm growth ability on specimen was examined and the effect of surface state on corrosion resistance was evaluated by electrochemical and immersion methods.

Results: High survival of hFOB cells, as well as a strong tendency for Pseudomonas aeruginosa and Staphylococcus aureus biofilm proliferation on the surface of the tested specimens were shown. SLM-processed AZ31B alloy has a higher corrosion resistance in 0.9% NaCl solution and in a multi-electrolyte saline solution than the material in a conventional form of a rolled sheet.

Conclusions: It has been demonstrated that the strong development of the surface of as-built processed specimens results in a significantly increased corrosion rate, which hinders the production of complex structures in tissue engineering products that support cell ingrowth.

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