Investigation of Boron addition and compaction pressure on the compactibility, densification and microhardness of 316L Stainless Steel

Ali, Sarfraz; Rani, Ahmad Majdi Abdul; Altaf, Khurram; Baig, Zeeshan

doi:10.1088/1757-899x/344/1/012023

Cited by 16 publications

(10 citation statements)

References 14 publications

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“…In this study, gas atomized 316L SS powder was used as the matrix to prepare the samples. The amount of boron addition was limited to 0.25 wt.% for activated sintering for maximum densification, as per our previous studies [9,34,38] whereas the amount of niobium was varied from 0.5 wt.% to 2 wt.%. The SEM images and XRD analysis of all the powders used in the study are shown in Figures 1 and 2, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…Among the various biomaterials available, austenitic 316L stainless steel has been in use since the 1930s, when it was utilized in the total hip replacement of an orthopaedic patient [6,7]. Since then, it has gained tremendous attention as a biomaterial for implant manufacturing owing to its biocompatibility, adequate mechanical properties, ease of manufacturing, decent corrosion resistance, and cheaper cost [8,9]. ASTM International also recommends the 316L type amongst the various available grades of austenitic stainless steels for its usage as an implant material.…”

Section: Introductionmentioning

confidence: 99%

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The Influence of Nitrogen Absorption on Microstructure, Properties and Cytotoxicity Assessment of 316L Stainless Steel Alloy Reinforced with Boron and Niobium

et al. 2019

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In the past, 316L stainless steel (SS) has been the material of choice for implant manufacturing. However, the leaching of nickel ions from the SS matrix limits its usefulness as an implant material. In this study, an efficient approach for controlling the leaching of ions and improving its properties is presented. The composition of SS was modified with the addition of boron and niobium, which was followed by sintering in nitrogen atmosphere for 8 h. The X-ray diffraction (XRD) results showed the formation of strong nitrides, indicating the diffusion of nitrogen into the SS matrix. The X-ray photoelectron spectroscopy (XPS) analysis revealed that a nitride layer was deposited on the sample surface, thereby helping to control the leaching of metal ions. The corrosion resistance of the alloy systems in artificial saliva solution indicated minimal weight loss, indicating improved corrosion resistance. The cytotoxicity assessment of the alloy system showed that the developed modified stainless steel alloys are compatible with living cells and can be used as implant materials.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Influence of Nitrogen Absorption on Microstructure, Properties and Cytotoxicity Assessment of 316L Stainless Steel Alloy Reinforced with Boron and Niobium

et al. 2019

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“…Subsequently, this material gained attention and is widely used in several biomedical applications including implantation and medical devices. This material shows adequate mechanical properties and biocompatibility at a reasonable cost [3][4][5][6]. The implants produced from this material are much cheaper as compared to other biomaterials available in the market including titanium, cobalt chromium and others [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Surface Nitriding and Characterization of Ti-Nb Modified 316L Stainless Steel Alloy Using Powder Metallurgy

et al. 2021

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The powder metallurgy (PM) technique has been widely used for producing different alloy compositions by the addition of suitable reinforcements. PM is also capable of producing desireable mechanical and physical properties of the material by varying process parameters. This research investigates the addition of titanium and niobium in a 316L stainless steel matrix for potential use in the biomedical field. The increase of sintering dwell time resulted in simultaneous sintering and surface nitriding of compositions, using nitrogen as the sintering atmosphere. The developed alloy compositions were characterized using OM, FESEM, XRD and XPS techniques for quantification of the surface nitride layer and the nitrogen absorbed during sintering. The corrosion resistance and cytotoxicity assessments of the developed compositions were carried out in artificial saliva solution and human oral fibroblast cell culture, respectively. The results indicated that the nitride layer produced during sintering increased the corrosion resistance of the alloy and the developed compositions are non-cytotoxic. This newly developed alloy composition and processing technique is expected to provide a low-cost solution to implant manufacturing.

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“…Since then, 316L stainless steel has been gaining great attention in biomedical applications. It is available at a low cost with adequate mechanical properties, biocompatibility and corrosion resistance [3,4]. Table 2.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Sintering Parameters of 316L Stainless Steel for In-Situ Nitrogen Absorption and Surface Nitriding Using Response Surface Methodology

et al. 2020

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This research investigates the simultaneous sintering and surface nitriding of 316L stainless steel alloy using powder metallurgy method. The influence of sintering temperature and dwell time are investigated for maximum nitrogen absorption, densification and increased microhardness using response surface methodology (RSM). In this study, 316L stainless steel powder was compacted at 800 MPa and sintered at two different temperatures of 1150 and 1200 • C with varying dwell times of 1, 3, 5 and 8 h in nitrogen atmosphere. The sintered compacts were then characterized for their microstructure, densification, microhardness and nitrogen absorption. The results revealed that increased dwell time assisted nitrogen to diffuse into stainless steel matrix along with the creation of nitride layer onto the sample surface. The microhardness and density also increased with increasing dwell time. A densification of 7.575 g/cm 3 and microhardness of 235 HV were obtained for the samples sintered at 1200 • C temperature with 8 h dwell time. The simultaneous sintering and surface nitriding technique developed in this research work can help in improving corrosion resistance of this material and controlling leaching of metal ions for its potential use in biomedical applications.

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Investigation of Boron addition and compaction pressure on the compactibility, densification and microhardness of 316L Stainless Steel

Cited by 16 publications

References 14 publications

The Influence of Nitrogen Absorption on Microstructure, Properties and Cytotoxicity Assessment of 316L Stainless Steel Alloy Reinforced with Boron and Niobium

The Influence of Nitrogen Absorption on Microstructure, Properties and Cytotoxicity Assessment of 316L Stainless Steel Alloy Reinforced with Boron and Niobium

Synthesis, Surface Nitriding and Characterization of Ti-Nb Modified 316L Stainless Steel Alloy Using Powder Metallurgy

Optimization of Sintering Parameters of 316L Stainless Steel for In-Situ Nitrogen Absorption and Surface Nitriding Using Response Surface Methodology

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