Alternating current oxidation of Ti–6Al–4V alloy in oxalic acid for corrosion resistant surface finishing

Bandeira, Rafael Marinho; Rêgo, Galtiere Corrêa; Picone, Carlos Alberto; Drunen, Julia van; Correr, Wagner Rafael; Casteletti, Luíz Carlos; Machado, Sérgio Antônio Spínola; Tremiliosi‐Filho, Germano

doi:10.1007/s42452-020-2905-y

Cited by 9 publications

(3 citation statements)

References 51 publications

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“…This method can improve coating thickness, hardness, corrosion, and wear resistance while also improving primer adhesion over bare metal. Anodization with a desirable outcome can be achieved upon the careful design of several parameters, such as electrolyte composition (De Oliveria & Antunes, 2018;Hsiao & Tsai, 2005;Ono et al, 2004;Park et al, 2008;Zaffora et al, 2021), anodizing parameters such as current density and voltage (De Oliveria & Antunes, 2018;Li et al, 2008;Mizutani et al, 2003;Ono et al, 2004;Bandeira et al, 2020), substrate effects including purity, the concentration of alloying elements (Hiromoto et al, 2008;Khaselev & Yahalom,1998;Mizutani et al, 2003), doping elements (Wang et al, 2020;Chatterjee et al, 2022) and substrate type. The applied voltage or current is powerfully influential in the anodizing behavior of the metal.…”

Section: Introductionmentioning

confidence: 99%

Geli̇şmi̇ş Korozyon Di̇renci̇ İçi̇n Eloksalli Metali̇k İmplantlarin Elektroki̇myasal Davranişlarinin İncelenmesi̇

MURAD

USTA

Asmatulu

et al. 2022

İstanbul Ticaret Üniversitesi Fen Bilimleri Dergisi

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A study about long-term corrosion behavior of anodized and non-anodized Ti6Al4V and MgAZ31B biomaterials was conducted under controlled conditions. By applying 20V DC potential, MgAZ31B alloys was anodized in phosphoric acid and potassium hydroxide while Ti6Al4V alloys was anodized in phosphoric acid and oxalic acid. Long-term experiments were carried out by immersing them in deionized (DI) water, 3% NaCl and phosphate-buffered saline (PBS) solutions. The corrosion rate and pattern were measured by electrochemical analysis. Also, as a result of anodization, the natural oxide layer was observed on the material surface, thus the corrosion rate is reduced and the life of the biomaterial has been improved.

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Section: Introductionmentioning

confidence: 99%

Geli̇şmi̇ş Korozyon Di̇renci̇ İçi̇n Eloksalli Metali̇k İmplantlarin Elektroki̇myasal Davranişlarinin İncelenmesi̇

MURAD

USTA

Asmatulu

et al. 2022

İstanbul Ticaret Üniversitesi Fen Bilimleri Dergisi

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“…A corrosion process or a specific pre-treatment to create passive layers decreases activity and longevity and the efficiency of the electropolishing process is increased. Carboxylic acids, including oxalic acid (OA), increase the reactivity by removing passive layers on the surface of a Ti-based alloy [ 29 , 30 ]. Common carboxylic ligands (OA) increase reactivity by dissolving Ti oxides on the surface of a Ti-based alloy.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Oxalic Acid as the Pre-Activator for the Electropolishing of Additive Manufactured Titanium-Based Materials and Its Characterization

et al. 2022

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The use of additive manufactured (AM) titanium-based materials has increased substantially for medical implants and aerospace components. However, the inferior surface roughness of additive manufactured products affects the outward appearance and reduces performance. This study determines whether activation treatment prior to electropolishing produces a better surface. Oxalic acid (OA) is used as a pre-activator using different experimental conditions and the surface roughness is reduced by electropolishing with an electrolyte of perchloric acid and glacial acetic acid. The SEM surface morphology, mechanical properties, phase transformation and electrochemical properties are measured to determine the effect of different degrees of roughness on the surface. The results show that the surface roughness of AM titanium-based samples decreases from 8.47 µm to 1.09 µm after activation using OA as a pre-treatment for electropolishing. After electropolishing using optimal parameters, the hardness and resistance to corrosion resistance are increased.

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“…Titanium (Ti) alloys are widely used in important industrial fields such as oil pipelines, aerospace, automobile manufacturing, marine drilling, and biomedicine due to their high specific strength, [1][2][3][4] low elastic modulus, [5][6][7] good electrical conductivity, [8,9] and fracture toughness, [10,11] as well as excellent corrosion resistance. [12][13][14] As a functional and structural material with excellent overall properties, the composition design, microstructure, mechanical characterization, and corrosion performance of Ti alloys have been extensively studied, [15][16][17][18] and the types of Ti alloys have gradually developed into hightemperature Ti alloys, [19,20] high-strength Ti alloys, [21,22] corrosion-resistant Ti alloys, [23,24] and biomedical Ti alloys, [25,26] which has great actual application value. In view of its excellent corrosion resistance, Ti alloy materials are more and more widely used in coastal atmospheric marine environments and soil corrosion environments.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical corrosion behavior of Ti‐3Mo alloy under different accelerated corrosion tests

Huang¹,

Zheng²,

Fu³

et al. 2022

Materials & Corrosion

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The electrochemical corrosion behavior of Ti-3Mo alloys under different accelerated corrosion tests including seawater corrosion, soil corrosion, and stray current corrosion was investigated. Results showed that the i corr value gradually increased with the increase of NaCl/Na 2 SO 4 concentration, indicating a worsening corrosion resistance of Ti-3Mo alloy. The presence of stray current seriously destroyed the oxide film on the sample surface, and inhibited the regeneration of oxide film, thereby resulting in the deterioration of corrosion resistance. Besides this, the potential difference between duplex phases was prone to form a microgalvanic coupling, which promoted the dissolution of local regions.

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Alternating current oxidation of Ti–6Al–4V alloy in oxalic acid for corrosion resistant surface finishing

Cited by 9 publications

References 51 publications

Geli̇şmi̇ş Korozyon Di̇renci̇ İçi̇n Eloksalli Metali̇k İmplantlarin Elektroki̇myasal Davranişlarinin İncelenmesi̇

Geli̇şmi̇ş Korozyon Di̇renci̇ İçi̇n Eloksalli Metali̇k İmplantlarin Elektroki̇myasal Davranişlarinin İncelenmesi̇

The Effect of Oxalic Acid as the Pre-Activator for the Electropolishing of Additive Manufactured Titanium-Based Materials and Its Characterization

Electrochemical corrosion behavior of Ti‐3Mo alloy under different accelerated corrosion tests

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