Tribological behavior and biocompatibility of novel Nickel-Free stainless steel manufactured via laser powder bed fusion for biomedical applications

Chinmayee Nayak (Corresponding Author), Abhinav Anand, Nikhil Kamboj, Tuomas Kantonen, Karoliina Kajander, Vilma Tupala, Terhi J. Heino, Rahul Cherukuri, Gaurav Mohanty, Jan Čapek, Efthymios Polatidis, Sneha Goel, Antti Salminen, Ashish Ganvir

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Due to the risk of releasing carcinogenic nickel ions from conventional 316L stainless steel under a corrosive human body environment, a new variant of steel termed nickel-free stainless steel (NiFSS) has been investigated. The present study investigates the tribological properties and biocompatibility of NiFSS manufactured via laser powder bed fusion (PBF-LB/M). The ferritic NiFSS exhibited significantly lower coefficient of friction (0.08 to 0.28) and wear rate (1.60 × 10-6 mm3/Nm to 6.60 × 10-6 mm3/Nm) compared to reported values for austenitic 316L SS, under both dry and simulated body fluid (SBF) conditions and various sliding geometries. This improvement is attributed to the superior hardness (3.394 ± 0.1340 GPa) and elastic modulus (238 ± 9.0797 GPa) of NiFSS. To assess the biocompatibility, the viability of mouse pre-osteoblastic MC3T3-E1 cells was evaluated with an Alamar Blue assay when the cells were cultured on top of PBF-LB/M built NiFSS and 316L SS samples. The results indicated that even though cell growth was most optimal on regular cell culture plastic, cell viability was better maintained on PBF-LB/M built NiFSS compared to 316L SS. Therefore, the results of the present study propose that PBF-LB/M fabricated NiFSS holds promise for application in biomedical devices for joint arthroplasty.

Original languageEnglish
Article number113013
Number of pages13
JournalMaterials and Design
Volume242
DOIs
Publication statusE-pub ahead of print - 9 Mar 2024
MoE publication typeA1 Journal article-refereed

Keywords

  • Additive Manufacturing
  • Biocompatibility
  • Biomedical Engineering
  • Laser Powder Bed Fusion
  • Nickel-Free Stainless Steel
  • Tribology

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