Improved corrosion behaviour of electron beam melted Ti-6Al–4V alloy in phosphate buffered saline

Bai, Yun; Gai, Xin; Li, Shujun; Zhang, Lai-Chang; Liu, Yujing; Hao, Yulin; Zhang, Xing; Yang, Rui; Gao, Yanbin

doi:10.1016/j.corsci.2017.05.003

Cited by 208 publications

(91 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 3a shows the Nyquist plots of impedance module for samples for different immersion times. Flat and incomplete capacitive arcs are shown in all Nyquist diagrams, which is consistent with the previous investigations [23][24][25]. The size of the arc increases as the soaking time increases and then decreases, which reveals the impedance amplitude also increased first (1-4 days) and then decreased.…”

Section: Electrochemical Measurementssupporting

confidence: 91%

Corrosion Behavior of the Ti–6Al–4V Alloy in Sulfate-Reducing Bacteria Solution

et al. 2019

View full text Add to dashboard Cite

The corrosion behavior of the Ti-6Al-4V alloy was investigated in a sulfate-reducing bacteria (SRB) solution. The results showed that sulfate-reducing bacteria has good affinity with the surface of the Ti-6Al-4V alloy after 5 days. A potentiodynamic polarization test demonstrated that the corrosion resistance of the Ti-6Al-4V alloy was initially improved but deteriorated quickly in the subsequent period. The corrosion mechanism of the Ti-6Al-4V alloy was revealed by analyzing its microstructure with the aid of scanning electron microscopy, X-ray photoelectron spectroscopy and X-ray fluorescence. The pitting corrosion was deemed to be a typical cause of the corrosion behavior of the alloy in the SRB solution. The underlying mechanism of the pitting corrosion was proposed for the alloy.

show abstract

Section: Electrochemical Measurementssupporting

confidence: 91%

Corrosion Behavior of the Ti–6Al–4V Alloy in Sulfate-Reducing Bacteria Solution

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Additionally, the more content of β-Ti phase also increases the corrosion resistance. The main reason is β phase containing more V content (β stabilisers) [38], the β phase possessing more V content plays an important role in improving its resistance to dissolution [20], the high fraction of β phase enhances the resistance of charge transfer through the double layer and reduces the rate of metal dissolving reaction [39], the value of R ct can also support the corresponding conclusion.…”

Section: Discussionmentioning

confidence: 76%

Effect of Build Orientation on the Corrosion Behavior and Mechanical Properties of Selective Laser Melted Ti-6Al-4V

Sui¹,

Li²,

Wang³

et al. 2019

Metals

View full text Add to dashboard Cite

Ti-6Al-4V alloys with different build orientations have been fabricated by selective laser melting (SLM). The corrosion behavior and mechanical properties have been studied. Investigation of microstructures were characterized by optical microscopy (OM), scanning electron microscopy (SEM), and X-ray diffraction (XRD) analysis. Electrochemical results show that the vertical sample and horizontal sample possess excellent corrosion resistance in the cross section and longitudinal section respectively, which can be attributed to the presence of less acicular α′ martensite and more β phase. Mechanical properties of all samples were determined by compression testing and hardness measurements. The compression strength (σc) and plastic deformation (εp) of the horizontal sample were higher than those of the vertical sample and the sample with building direction of 45°, because the molten pool boundaries (MPBs) play a significant role in the microscopic slipping at the loading SLM parts. In addition, the sample with building orientation of 45° achieved highest hardness. Therefore, distinct anisotropy due to different build orientations.

show abstract

“…Also, surface treatments such as anodizing and coatings can inventively alter the electrical current density passing through the bulk material [53][54][55]. Yun Bai et al [56] showed that wrought Ti-6Al-4V has greater corrosion rate than electron beam melting (EBM)-produced Ti-6Al-4V. EBM-produced Ti-6Al-4V mainly consists of α and β phases, with a higher volume of β phase and much refined lamellar α/β phases and it was found that localized micro galvanic cells produced by α and β phases degrade the corrosion resistance of EBM-produced Ti-6Al-4V.…”

Section: Fabrication Processmentioning

confidence: 99%

On the Corrosion Behaviour of Low Modulus Titanium Alloys for Medical Implant Applications: A Review

Afzali

Ghomashchi

Oskouei

2019

Metals

View full text Add to dashboard Cite

The corrosion behaviour of new generation titanium alloys (β-type with low modulus) for medical implant applications is of paramount importance due to their possible detrimental effects in the human body such as release of toxic metal ions and corrosion products. In spite of remarkable advances in improving the mechanical properties and reducing the elastic modulus, limited studies have been done on the electrochemical corrosion behaviour of various types of low modulus titanium alloys including the effect of different beta-stabilizer alloying elements. This development should aim for a good balance between mechanical properties, design features, metallurgical aspects and, importantly, corrosion resistance. In this article, we review several significant factors that can influence the corrosion resistance of new-generation titanium alloys such as fabrication process, body electrolyte properties, mechanical treatments, alloying composition, surface passive layer, and constituent phases. The essential factors and their critical features are discussed. The impact of various amounts of α and β phases in the microstructure, their interactions, and their dissolution rates on the surface passive layer and bulk corrosion behaviour are reviewed and discussed in detail. In addition, the importance of different corrosion types for various medical implant applications is addressed in order to specify the significance of every corrosion phenomenon in medical implants.

show abstract

Improved corrosion behaviour of electron beam melted Ti-6Al–4V alloy in phosphate buffered saline

Cited by 208 publications

References 41 publications

Corrosion Behavior of the Ti–6Al–4V Alloy in Sulfate-Reducing Bacteria Solution

Corrosion Behavior of the Ti–6Al–4V Alloy in Sulfate-Reducing Bacteria Solution

Effect of Build Orientation on the Corrosion Behavior and Mechanical Properties of Selective Laser Melted Ti-6Al-4V

On the Corrosion Behaviour of Low Modulus Titanium Alloys for Medical Implant Applications: A Review

Contact Info

Product

Resources

About