Tribological behavior and biocompatibility of novel Nickel-Free stainless steel manufactured via laser powder bed fusion for biomedical applications
: Nayak Chinmayee, Anand Abhinav, Kamboj Nikhil, Kantonen Tuomas, Kajander Karoliina, Tupala Vilma, Heino Terhi J., Cherukuri Rahul, Mohanty Gaurav, Čapek Jan, Polatidis Efthymios, Goel Sneha, Salminen Antti, Ganvir Ashish
Publisher: Elsevier
: 2024
: Materials and Design
: Materials & Design
: 113013
: 242
: 0264-1275
: 1873-4197
DOI: https://doi.org/10.1016/j.matdes.2024.113013
: https://doi.org/10.1016/j.matdes.2024.113013
: https://research.utu.fi/converis/portal/detail/Publication/393516036
: Correction to this article: https://doi.org/10.1016/j.matdes.2025.113984 ; DOI:10.1016/j.matdes.2025.113984
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.
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