Wetting behavior of selective laser melted (SLM) bio-medical grade stainless steel 316L

Dwivedi, Suryank; Dixit, Amit Rai; Das, Alok Kumar

doi:10.1016/j.matpr.2021.12.046

Cited by 28 publications

(12 citation statements)

References 13 publications

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“…The drop placed on the surface equilibrates until the sum of the interfacial tensions in the plane of the surface is zero . The presence of rough surfaces and microporosities results in droplet spreading rather easily, giving a lower contact angle value, which is in coherence with results from a published report . The change in the surface wettability by the addition of gentamicin to the PLGA-coated implant, is predictable as gentamicin is hydrophilic in nature.…”

Section: Discussionsupporting

confidence: 82%

“…76 The drop of water is released from the needle which comes in contact with the surface, acting as an energy barrier for the solid-lipid interface. 76 The drop placed on the surface equilibrates until the sum of the interfacial tensions in the plane of the surface is zero. 77 The presence of rough surfaces and microporosities results in droplet spreading rather easily, giving a lower contact angle value, which is in coherence with results from a published report.…”

Section: Dp Improved Surface Deposition Of Multilayered Polymeric Coa...mentioning

confidence: 99%

“…77 The presence of rough surfaces and microporosities results in droplet spreading rather easily, giving a lower contact angle value, which is in coherence with results from a published report. 76 The change in the surface wettability by the addition of gentamicin to the PLGAcoated implant, is predictable as gentamicin is hydrophilic in nature. For blank uncoated rough implants, contact angle was observed between 19°−30°, which upon addition of hydrophobic PLGA coat, increased to 72°.…”

Section: Dp Improved Surface Deposition Of Multilayered Polymeric Coa...mentioning

confidence: 99%

See 2 more Smart Citations

Gentamicin Eluting 3D-Printed Implants for Preventing Post-Surgical Infections in Bone Fractures

et al. 2023

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A surgically implantable device is an inevitable treatment option for millions of people worldwide suffering from diseases arising from orthopedic injuries. A global paradigm shift is currently underway to tailor and personalize replacement or reconstructive joints. Additive manufacturing (AM) has provided dynamic outflow to the customized fabrication of orthopedic implants by enabling need-based design and surface modification possibilities. Surgical grade 316L Stainless Steel (316L SS) is promising with its cost, strength, composition, and corrosion resistance to fabricate 3D implants. This work investigates the possibilities of application of the laser powder bed fusion (L-PBF) technique to fabricate 3D-printed (3DP) implants, which are functionalized with a multilayered antimicrobial coating to treat potential complications arising due to postsurgical infections (PSIs). Postsurgical implant-associated infection is a primary reason for implantation failure and is complicated mainly by bacterial colonization and biofilm formation at the installation site. PLGA (poly-D,L-lactide-co-glycolide), a biodegradable polymer, was utilized to impart multiple layers of coating using the airbrush spray technique on 3DP implant surfaces loaded with gentamicin (GEN). Various PLGA-based polymers were tested to optimize the ideal lactic acid: glycolic acid ratio and molecular weight suited for our investigation. 3D-Printed PLGA-GEN substrates sustained the release of gentamicin from the surface for approximately 6 weeks. The 3DP surface modification with PLGA-GEN facilitated cell adhesion and proliferation compared to control surfaces. The cell viability studies showed that the implants were safe for application. The 3DP PLGA-GEN substrates showed good concentration-dependent antibacterial efficacy against the common PSI pathogen Staphylococcus aureus (S. aureus) and Staphylococcus epidermidis (S. epidermidis). The GEN-loaded substrates demonstrated antimicrobial longevity and showed significant biofilm growth inhibition compared to control. The substrates offered great versatility regarding the in vitro release rates, antimicrobial properties, and biocompatibility studies. These results radiate great potential in future human and veterinary clinical applications pertinent to complications arising from PSIs, focusing on personalized sustained antibiotic delivery.

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Section: Discussionsupporting

confidence: 82%

Section: Dp Improved Surface Deposition Of Multilayered Polymeric Coa...mentioning

confidence: 99%

Section: Dp Improved Surface Deposition Of Multilayered Polymeric Coa...mentioning

confidence: 99%

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Gentamicin Eluting 3D-Printed Implants for Preventing Post-Surgical Infections in Bone Fractures

et al. 2023

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“…Laser powder bed fusion (LPBF), a major type of metal additive manufacturing process, has been widely used to produce structural components due to its high design freedom and fabrication flexibility. Stainless steels, especially austenitic stainless steels and precipitation-hardening stainless steels, are preferred candidate materials for LPBF due to their wide applications in the medical device, [1][2][3] nuclear energy, [4][5][6][7] and aerospace industries. [8][9][10] In particular, the use of 316 L austenitic stainless steel has received great attention when using LPBF due to its good processability.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Innovative Fe–Cr–Mn Ferritic Stainless Steel by Laser Powder Bed Fusion

et al. 2023

steel research int.

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Crack development for laser-fused metallic materials is one major challenge for laser-based powder bed fusion (LPBF). The cracks are manifested in two forms, i.e., macrocracks along building layers due to spalling and microcracks along the high-angle grain boundaries. To mitigate the crack formation, a new type of ferritic stainless steel Fe-Cr-Mn are synthesized by LPBF. The well-developed columnar ferrite grains with an enhanced fine acicular austenite precipitation, which possess Nishiyama-Wassermann (N-W) orientation relationship with the ferrite matrix, can be readily produced when the laser energy density is beyond 100 J mm À3 . Porosity can be further reduced below 0.5% by optimizing the laser power and scanning speed. It is found that laser rescanning may eliminate the cracks without modifying the grain morphology, crystallographic texture, and phase distribution.

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“…Most of the currently developed methods for construction of superhydrophobic coating are still limited by the complicated process and valuable equipment [ 25 ]. Iron and steel iron have been the most widely used materials for building the world’s infrastructure and industries, as well as the most common metals for surgical instruments, chemical and hazardous waste receptacles, prostheses, crutches, and metal plates [ 26 , 27 , 28 ]. Therefore, fabricating superhydrophobic surfaces on iron has a vital significance.…”

Section: Introductionmentioning

confidence: 99%

Construction of Superhydrophobic Coating on Iron Surface with Enhanced Anti-Corrosion, Anti-Adhesive and Anti-Bacterial Properties

et al. 2022

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Superhydrophobic coatings on iron surface have a wide application potential in medical instruments, chemical industrial equipment, and house construction. In this work, we developed a multi-functional superhydrophobic coating on iron surface with a high air/water contact angle of 162.3° and a low sliding angle of 2.4°. The construction of superhydrophobic coating involves physical friction processing to fabricate micropatterns and structures, followed by annealing treatment and surface chemical modification with 1H,1H,2H,2H-tridecafluoro-n-octyltrimethoxysilane. The obtained organic–inorganic composite material exhibited considerable optimization potential to anti-condensation performance. The low surface energy of the superhydrophobic coating also leads to poor adhesion of water, dust, and blood platelets, which is beneficial for applications in medical devices. The electrochemical and impedance test results demonstrated that the superhydrophobic surface provided effective corrosion protection for the iron substrate, with an 84.63% increase in corrosion protection efficiency. The experimental results showed that the anti-bacterial ratios reached 90% for E. coli and 85% for S. epidermidis, while the anti-bacterial ratios of ordinary iron were only 8% for E. coli and 15% for S. epidermidis, respectively.

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Wetting behavior of selective laser melted (SLM) bio-medical grade stainless steel 316L

Cited by 28 publications

References 13 publications

Gentamicin Eluting 3D-Printed Implants for Preventing Post-Surgical Infections in Bone Fractures

Gentamicin Eluting 3D-Printed Implants for Preventing Post-Surgical Infections in Bone Fractures

Synthesis and Characterization of Innovative Fe–Cr–Mn Ferritic Stainless Steel by Laser Powder Bed Fusion

Construction of Superhydrophobic Coating on Iron Surface with Enhanced Anti-Corrosion, Anti-Adhesive and Anti-Bacterial Properties

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