Corrosion behavior of additive manufactured Ti-6Al-4V in sulfamic acid cleaning solution

Additive manufacturing (AM) as a disruptive technology has received much attention in recent years. In practice, however, much effort is focused on the AM of polymers. It is comparatively more expensive and more challenging to additively manufacture metallic parts due to their high temperature, the cost of producing powders, and capital outlays for metal additive manufacturing equipment. The main technology currently used by numerous companies in the aerospace and biomedical sectors to fabricate metallic parts is powder bed technology, in which either electron or laser beams are used to melt and fuse the powder particles line by line to make a three-dimensional part. Since this technology is new and also sought by manufacturers, many scientific questions have arisen that need to be answered. This manuscript gives an introduction to the technology and common materials and applications. Furthermore, the microstructure and quality of parts made using powder bed technology for several materials that are commonly fabricated using this technology are reviewed and the effects of several process parameters investigated in the literature are examined. New advances in fabricating highly conductive metals such as copper and aluminum are discussed and potential for future improvements is explored.

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“…The corrosion behavior of several PBF-AM processed Ti alloys were studied [92][93][94][95][96][97][98][99][100][101][102].…”

Section: Corrosion Behavior Of Powder Bed Fusion Additive Manufactured Ti Alloysmentioning

confidence: 99%

Review of Powder Bed Fusion Additive Manufacturing for Metals

Ladani

Sadeghilaridjani

2021

Metals

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“…It is consistent with the results in the previous study, indicating that the content of Cr 2 O 3 in the passive film formed on the surface of the SLMed 316L stainless steel was twice that of the forged one in a simulated deep-sea environment (8 MPa, 5 • C) [12]. In a 10% sulfamic acid solution, the corrosion resistance of a Ti-6Al-4V alloy depended on the AM method, yielding that the SLMed Ti-6Al-4V alloy had the lowest corrosion rate than the ones prepared using spark plasma sintering and electron beam melting (EBM) [13].…”

Section: Introductionmentioning

confidence: 99%

“…Although the goals of these works above tried to utilize AM to fabricate components with complex shapes without sacrificing their mechanical and corrosion properties [1][2][3][4][5][6][7][8][9][10][11][12][13][14], their results are contradictory. Therefore, more studies are required to be conducted on the optimization of the AM method and characterization of the passive films formed [11,12].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Selective Laser Melted Ti-6Al-4V in 0.1 mol/L NaOH Solution

et al. 2023

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In this work, the corrosion behavior of a Ti-6Al-4V alloy prepared using selective laser melting (SLM) in a 0.1 mol/L NaOH solution was studied by means of corrosion electrochemical testing, X-ray diffraction analysis and X-ray photoelectron spectroscopy (XPS), and its corrosion process was compared with the commercially forged Ti-6Al-4V alloy. The results show that the corrosion resistance of the commercially forged Ti-6Al-4V alloy was higher than the SLMed Ti-6Al-4V alloy, which is closely correlated with the presence of more active spots on the alloy surface and more defects in the passive films.

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“…It affects microstructure and phase distribution in Ti-Al-4V alloy. Phase constitution is also found to be closely related to the corrosion resistance [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Nanoscale Chemical Surface Analyses of Recycled Powder for Direct Metal Powder Bed Fusion Ti-6Al-4V Root Analog Dental Implant: An X-ray Photoelectron Spectroscopy Study

et al. 2023

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Over the past couple of decades, additive manufacturing and the use of root-analogue-printed titanium dental implants have been developed. Not all powder particles are sintered into the final product during the additive manufacturing process. Reuse of the remaining powder could reduce the overall implant manufacturing cost. However, Ti-6Al-4V powder particles are affected by heat, mechanical factors, and oxidization during the powder bed fusion manufacturing process. Degradation of the powder may harm the final surface composition and decrease the biocompatibility and survival of the implant. The uncertainty of the recycled powder properties prevents implant fabrication facilities from reusing the powder. This study investigates the chemical composition of controlled, clean, and recycled titanium alloy powder and root-analogue implants (RAI) manufactured from these powders at three different depths. The change in titanium’s quantity, oxidization state, and chemical composition in powder and RAI implants have been demonstrated and analyzed. While not identical, the surface chemical composition of the recycled powder implant and the implant manufactured from unused powder are similar. The results also indicate the presence of TiO2 on all surfaces. Many studies confirmed that titanium dioxide on the implant’s surface correlates with better osteointegration, reduced bacterial infection, and increased corrosion resistance. Considering economic and environmental aspects, surface chemical composition comparison of clean and reused powder is crucial for the future manufacturing of cost-effective and biocompatible implants.

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Corrosion behavior of additive manufactured Ti-6Al-4V in sulfamic acid cleaning solution

Abstract: The specific microstructural features and phase composition lead to different corrosion behaviors of SPS and additive manufactured Ti-6Al-4V alloys.

Cited by 12 publications

References 39 publications

Review of Powder Bed Fusion Additive Manufacturing for Metals

Review of Powder Bed Fusion Additive Manufacturing for Metals

Corrosion Behavior of Selective Laser Melted Ti-6Al-4V in 0.1 mol/L NaOH Solution

Nanoscale Chemical Surface Analyses of Recycled Powder for Direct Metal Powder Bed Fusion Ti-6Al-4V Root Analog Dental Implant: An X-ray Photoelectron Spectroscopy Study

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