Effect of heat treatment on the corrosion resistance of selective laser melted Ti6Al4V3Cu alloy

Li, Liu; Chen, Yunxiang; Lu, Yanjin; Qin, Sijie; Huang, Gonghao; Huang, Ting‐Ting; Lin, Jinxin

doi:10.1016/j.jmrt.2021.03.041

Cited by 28 publications

(5 citation statements)

References 32 publications

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“…Therefore, the non-uniform distribution of copper is the main factor for contributing to the decreased corrosion resistance in the SLM-produced Ti6Al4V3Cu alloys, created from mixture powder, compared to the pre-alloyed metallic powder. However, it must be noted that the casting Ti6Al4V3Cu-C alloy showed the lowest ion concentration compared with the SLM-produced alloys, although the SLM-produced alloys showed the lower corrosion current density, which was reported in the previous study [ 26 ]. Therefore, the in-depth study and underlying mechanism should be explored in further study.…”

Section: Discussionmentioning

confidence: 61%

“…In our previous study, a series of Cu-bearing Ti6Al4V alloys were fabricated by selective laser melting (SLM) technology with mixed powders, consisting of Cu and Ti6Al4V, and the effects of Cu content on the microstructure, corrosion resistance, antibacterial properties, and cytotoxicity of SLM-produced Ti6Al4V-Cu alloys were systematically assessed [ 24 , 25 ]. Based on the above results, Ti6Al4V3Cu pre-alloyed powders were produced using the gas atomization method, from the corresponding cast ingot, and then used in the SLM technology [ 26 ]. Further, the corrosion resistance of the SLM-produced Ti6Al4V3Cu alloys, produced from the pre-alloyed powder, was investigated at different heat treatments.…”

Section: Introductionmentioning

confidence: 99%

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Corrosion Resistance of Selective Laser Melted Ti6Al4V3Cu Alloy Produced Using Pre-Alloyed and Mixed Powder

Huang

Fan

et al. 2022

Materials

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Metallic elemental powder mixture and pre-alloyed metallic powder are both frequently used powder feedstock in the additive manufacturing process. However, little research has been conducted to compare the corrosion behavior of selective laser melting (SLM) alloys, fabricated by pre-alloyed metallic powder and mixed metallic powder. Hence, it is important to investigate the corrosion behavior of SLMed alloys, as well as the corresponding cast ingot, with the aim to better understand the feasibility of designing new materials. In this work, the SLM-produced Ti6Al4V3Cu alloys were manufactured using a metallic elemental powder mixture and pre-alloyed metallic powder, respectively. The corrosion behavior of the different Ti6Al4V3Cu alloys was investigated in following electrochemical tests and ion release measurements. The results showed that the Ti6Al4V3Cu alloy prepared by pre-alloyed metallic powder showed better corrosion resistance than that produced from mixed metallic powder. Moreover, the SLM-produced Ti6Al4V3Cu alloys performed significantly better in corrosion resistance than the cast Ti6Al4V3Cu. The results are expected to achieve a better understanding of the feasibility of designing new materials using mixed powders, contributing to reducing development costs and cycles.

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Section: Discussionmentioning

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Corrosion Resistance of Selective Laser Melted Ti6Al4V3Cu Alloy Produced Using Pre-Alloyed and Mixed Powder

Huang

Fan

et al. 2022

Materials

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“…The advantages of a local drug delivery system include: drug release at the affected area, the drug concentration is rapidly reached locally, maintenance of the local effective drug concentration for longer durations, and the prevention of adverse reactions caused by the systemic application of antibiotics. This prevents the disadvantage of local loss of blood supply after a bone defect [22]. Therefore, there was a significant decrease in the rates of infection in the gentamicin/HA/TNT group contrasted with that of the standard Cp-Ti group and TNT group.…”

Section: Discussionmentioning

confidence: 99%

Improved Biocompatibility of TiO2 Nanotubes via Co-Precipitation Loading with Hydroxyapatite and Gentamicin

Tong

Sun

et al. 2021

Coatings

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The antibacterial properties of titanium make it useful for clinical applications. Hydroxyapatite (HA) is widely utilized as a coating on orthopedic implants to improve osteointegration. Titanium oxide nanotubes (TNT) are recognized as a promising solution for local antibiotic therapy in bone implants. It is demonstrated that the utilization of HA-coated titanium can improve the biocompatibility of bone implants. This research aims to examine the antibacterial properties and biocompatibility of the TiO2 nanotubes by loading HA and gentamicin. In vitro testing, the characterization of drug release, cell adhesion and proliferation, bacteria culture, and antibacterial tests were conducted. During the in vivo experiments, Staphylococcus aureus was implanted into the femur of rats. The animals were sacrificed at four weeks followed by microbiological and clinical assessments on the bone, which were conducted by removing the implants followed by agar plating. The in vitro cell incubation demonstrated that the TiO2 nanotubes loaded with hydroxyapatite and gentamicin had better cellular compatibility compared to Cp–Ti. In addition, in vitro elution testing showed that gentamicin was released from the hydroxyapatite/TiO2 nanotubes for as long as 22 days. The release time was much longer than the TNT loaded with gentamicin at only 6 h. All animals in the gentamicin/HA/TNT group were free of infection compared to those in the Cp–Ti, TNT, and HA/gentamicin/TNT groups. There was a considerable reduction in the rates of infection among the rats with gentamicin-HA-TNT coatings compared to standard titanium. These results indicated that the co-precipitation of gentamicin and HA loading using the TNT method provided a novel prophylactic method against prosthetic infections and other biomedical applications.

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“…After soaking in SBF for 7 days, the ions from the titanate layer exchanged with the H 3 O 3þ leading to the formation of TieOH groups on the surface of the treated sample. This influenced the ability for apatite formation due to the presence of the rutile oxide phase (TiO 2 ) and increased the corrosion resistance of the SLM Tie6Ale4V which prevents the release of ions into the body fluid [62]. The XRD pattern of the untreated sample did not reveal the formation of any oxide phase on its surface since no characteristic peaks of oxide phases were observed.…”

Section: Xrd Crystallinitymentioning

confidence: 99%

Surface Enhancement in Ti-6al-4v Fabricated by Selective Laser Melting on Bone-Like Apatite Formation

et al. 2022

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Effect of heat treatment on the corrosion resistance of selective laser melted Ti6Al4V3Cu alloy

Cited by 28 publications

References 32 publications

Corrosion Resistance of Selective Laser Melted Ti6Al4V3Cu Alloy Produced Using Pre-Alloyed and Mixed Powder

Corrosion Resistance of Selective Laser Melted Ti6Al4V3Cu Alloy Produced Using Pre-Alloyed and Mixed Powder

Improved Biocompatibility of TiO2 Nanotubes via Co-Precipitation Loading with Hydroxyapatite and Gentamicin

Surface Enhancement in Ti-6al-4v Fabricated by Selective Laser Melting on Bone-Like Apatite Formation

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