FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2660653246> ?p ?o ?g. }

• W2660653246 abstract "Abstract In this research, the Laser rapid manufacturing (LRM) additive manufacturing process was used to deposit hydroxyapatite (HAP) for surface modification of high nitrogen stainless steel. This process, unlike the conventional coating processes, is able to achieve coatings with good metallurgical bonding and little dilution. The microstructure and antibacterial properties of the deposited coatings were studied using optical microscopy, scanning electron microscopy and Fluorescence Activated Cell Sorting (FACS). Micro-structural studies showed that the laser modified surface consisted of austenite dendrities while the FACS test confirms significantly superior antibacterial properties of laser modified samples compared to pristine samples. Keywords: Laser rapid manufacturing, Laser surface modification, Implant, Stainless steel, Hydroxyapatite Introduction In spite of the lower corrosion resistance (in comparison to titanium), internal fixation devices are still being made of austenitic stainless steels (largely SS316L). This is owing to their excellent mechanical properties and low cost in comparison to titanium. 1-2 Absence of toxic effect as confirmed by cytotoxicity results and high nitrogen content of 254SS have made it a candidate for scientific investigation, towards developing a futuristic orthopaedic implant material. 3-4 Experimental work An additive manufacturing system (LRM type) equipped with a 2.0 kW continuous wave, ytterbium-doped, fiber laser with a beam size of 2.5 mm, was used to carry out direct laser melting of already prepared, preplaced HAP powder beds for the surface modification of high nitrogen stainless steel (SS254) substrates (100 × 50 × 3 mm 3 sheets). Several coating samples, over 100 mm 2 area, were prepared at 1000 W laser power and 1m/min scan speed. Results and discussion The cross-sectional microstructure of the laser surface-modified sample is shown in Fig. 1. As can be seen, the modified surfaces are free from any gross defects such as porosity or cracks. The modified surfaces exhibited an as-cast microstructure with austenite dendrites. Conclusions In the current study, a successful attempt is made to modify the surface of high nitrogen stainless steel (SS254) with HAP using an LRM system. The modified surfaces showed microstructure with austenite dendrites. FACS test confirms the laser surface-modified samples have significantly superior antibacterial property compared to the unmodified samples. The present work demonstrates that it is feasible to modify 254 stainless steel (used as a biomedical orthopaedic material)  with HAP using a laser additive manufacturing system. References [1]  Disegi, JA. et al., Injury. 2000; 4: 2-6.[2] Walczac, J. et al., Biomaterials. 1998; 19: 229-237. [3]  Afonso, MLCA. et al., Colloids Surf A: Physicochem Eng  Asp. 2008; 317: 760-763. [4]  Afonso, MLCA. et al., Mater Lett. 2015; 148: 71-75." @default.
• W2660653246 created "2017-06-30" @default.
• W2660653246 creator A5000108296 @default.
• W2660653246 date "2016-10-17" @default.
• W2660653246 modified "2023-09-24" @default.
• W2660653246 title "Direct laser melting of hydroxyapatite for surface modification of high nitrogen stainless steel for orthopaedic implant applications" @default.
• W2660653246 hasPublicationYear "2016" @default.
• W2660653246 type Work @default.
• W2660653246 sameAs 2660653246 @default.
• W2660653246 citedByCount "0" @default.
• W2660653246 crossrefType "journal-article" @default.
• W2660653246 hasAuthorship W2660653246A5000108296 @default.
• W2660653246 hasConcept C115537861 @default.
• W2660653246 hasConcept C127413603 @default.
• W2660653246 hasConcept C159985019 @default.
• W2660653246 hasConcept C191897082 @default.
• W2660653246 hasConcept C192562407 @default.
• W2660653246 hasConcept C20625102 @default.
• W2660653246 hasConcept C26771246 @default.
• W2660653246 hasConcept C2779229422 @default.
• W2660653246 hasConcept C2781448156 @default.
• W2660653246 hasConcept C42360764 @default.
• W2660653246 hasConcept C506065880 @default.
• W2660653246 hasConcept C87976508 @default.
• W2660653246 hasConcept C96288455 @default.
• W2660653246 hasConceptScore W2660653246C115537861 @default.
• W2660653246 hasConceptScore W2660653246C127413603 @default.
• W2660653246 hasConceptScore W2660653246C159985019 @default.
• W2660653246 hasConceptScore W2660653246C191897082 @default.
• W2660653246 hasConceptScore W2660653246C192562407 @default.
• W2660653246 hasConceptScore W2660653246C20625102 @default.
• W2660653246 hasConceptScore W2660653246C26771246 @default.
• W2660653246 hasConceptScore W2660653246C2779229422 @default.
• W2660653246 hasConceptScore W2660653246C2781448156 @default.
• W2660653246 hasConceptScore W2660653246C42360764 @default.
• W2660653246 hasConceptScore W2660653246C506065880 @default.
• W2660653246 hasConceptScore W2660653246C87976508 @default.
• W2660653246 hasConceptScore W2660653246C96288455 @default.
• W2660653246 hasLocation W26606532461 @default.
• W2660653246 hasOpenAccess W2660653246 @default.
• W2660653246 hasPrimaryLocation W26606532461 @default.
• W2660653246 hasRelatedWork W1567250687 @default.
• W2660653246 hasRelatedWork W1965731906 @default.
• W2660653246 hasRelatedWork W1972530916 @default.
• W2660653246 hasRelatedWork W1990500435 @default.
• W2660653246 hasRelatedWork W1993298868 @default.
• W2660653246 hasRelatedWork W2030278540 @default.
• W2660653246 hasRelatedWork W2059423360 @default.
• W2660653246 hasRelatedWork W2080487423 @default.
• W2660653246 hasRelatedWork W2385052796 @default.
• W2660653246 hasRelatedWork W2613706629 @default.
• W2660653246 hasRelatedWork W2638987007 @default.
• W2660653246 hasRelatedWork W2747927924 @default.
• W2660653246 hasRelatedWork W2791557048 @default.
• W2660653246 hasRelatedWork W2800220249 @default.
• W2660653246 hasRelatedWork W2883527682 @default.
• W2660653246 hasRelatedWork W2915529288 @default.
• W2660653246 hasRelatedWork W2998212191 @default.
• W2660653246 hasRelatedWork W3082457998 @default.
• W2660653246 hasRelatedWork W3165577830 @default.
• W2660653246 hasRelatedWork W3169667222 @default.
• W2660653246 isParatext "false" @default.
• W2660653246 isRetracted "false" @default.
• W2660653246 magId "2660653246" @default.
• W2660653246 workType "article" @default.