Corrosion behavior of plasma electrolytically oxidized gamma titanium aluminide alloy in simulated body fluid

Rodriguez, Lolita; Sundaram, P.A.

doi:10.1016/j.matchemphys.2016.06.034

Cited by 16 publications

(2 citation statements)

References 57 publications

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“…Aside from species free movement, air entrapment, and electrolyte penetration 35 . One of the two goals of surface modification of medical alloys is to prevent corrosion, which requires a surface free of pores to reduce the attachment of active ions to the base metal, and the second goal is to create a rough and porous surface to improve the bonding between tissue and implants 36 .The efficacy of the ZrO2/TiO2 nanocomposite ceramic coating by the PEO process with different times in the corrosion resistance, has been investigated in Hank's solution. The maximum corrosion resistance for sample B1 is achieved after coating at (5min), which results in the lowest corrosion current density (icorr.=1.673 A/cm 2 ).The surface shape and phases generated in the composite film have a significant impact on the ZrO2/TiO2 coating's ability to improve corrosion resistance.…”

Section: Additionally This Table Included Corrosion Rates (Cr)mentioning

confidence: 99%

Plasma Electrolytic Oxidation of Nanocomposite Coatings on Ti-6Al-7Nb alloy for Biomedical Applications

Khalid Naji,

Mohammed Salman,

Mohammed Dawood

2024

Baghdad Sci.J

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تهدف الدراسة الحالية إلى استخدام سبيكة Ti-6Al-7Nb بدلاً من سبيكة Ti-6Al-4V في التطبيقات الطبية. وبسب بصلادتها المنخفضة ومقاومة البلى التي تسبب فقدان الزرع. تم طلاء سطح سبيكة Ti-6Al-7Nb بطبقة مركبة من اوكسيد تيتانيوم واكسد الزركونيا النانوية بواسطة عملية الأكسدة بالتحليل الكهربائي للبلازما (PEO). أظهرت نتائج الاختبارات إمكانية ترسيب طلاء السيراميك على سطح سبيكة Ti-6Al-7Nb باستخدام فترات زمنية مختلفة. طبقة السيراميك من أكسيد التيتانيوم (TiO2) والتي تتكون أثناء الطلاء المسامي، والتوزيع المتجانس، ومقاومة التآكل العالية وقابلية البلى. تم الحصول على طبقة نانوية سيراميك مركبة من ZrO2 مع TiO2 ولوحظ مع زيادة الوقت يزداد من سمك طبقة الطلاء وتركيز ZrO2 وانخفاض المسامية مقارنة بطبقة TiO2 بنسبة التحسين (90.5٪) مع قدرة قوية على تكوين حاجز لمنع هجوم التآكل الموضعي من قبل الأيونات العدوانية التي ظهرت في محلول هانك أثناء اختبار التآكل.

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Section: Additionally This Table Included Corrosion Rates (Cr)mentioning

confidence: 99%

Plasma Electrolytic Oxidation of Nanocomposite Coatings on Ti-6Al-7Nb alloy for Biomedical Applications

Khalid Naji,

Mohammed Salman,

Mohammed Dawood

2024

Baghdad Sci.J

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“…14 Due to the chemical composition stability of g-TiAl as an intermetallic compound, a significant increase in bio-corrosion was reported compared with a-b titanium alloy. 15,16 Recently, laser therapy has been considered as a capable treatment of peri-implant diseases. 17 Nonetheless, the laser effects on implant surfaces during the peri-implantitis treatment are inevitable.…”

Section: Introductionmentioning

confidence: 99%

Er,Cr:YSGG laser surface treatment of gamma titanium aluminide: Scanning electron microscopy–energy-dispersive X-ray spectrometer analysis, wettability and Eikenella corrodens and Aggregatibacter actinomycetemcomitans bacteria count—in vitro study

Koopaie

Darbandsari

Hakimiha

et al. 2020

Proc Inst Mech Eng H

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Dental implants play an important role in oral health. Titanium dental implants must endure the complex microflora environment of the oral cavity. Moreover, bacterial infections have been considered as one of the most important factors of implant failure. The issue of dental improvement through modification of chemical composition and surface treatment has received considerable critical attention. γ-TiAl as a novo biocompatible material revealed a slower corrosion rate in biological media rather Ti-6Al-4V. The objective of this study is to investigate the effect of Er,Cr:YSGG laser on γ-TiAl in comparison with sandblasted and acid-etched samples as the control groups and machined samples. Wettability, surface roughness, surface topography, scanning electron microscopy–energy dispersive X-ray spectrometer analysis of surface and subsurface of samples were investigated and bacteria counts of two periodontal bacterial strains ( Aggregatibacter actinomycetemcomitans and Eikenella corrodens) were evaluated on the Er,Cr:YSGG laser surface-treated sandblasted and acid-etched and machined samples. The results of this investigation show that Er,Cr:YSGG laser surface treatment affects surface roughness, surface topography, wettability, chemical composition of the surface and bacteria count. Scanning electron microscopy–energy dispersive X-ray spectrometer analysis of the sample revealed the increment of titanium and oxygen content and reduction of aluminum content in the surface and subsurface layer. A. actinomycetemcomitans and E. corrodens count were found from the lowest level to highest in the sandblasted and acid-etched samples, laser samples and machined samples, respectively. Using controlled parameters of Er,Cr:YSGG laser ensured no significant adverse alteration. The findings to emerge from this study revealed the significant correlation between microbial count and wettability. Furthermore, the contact angle strongly correlated with surface roughness.

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Corrosion behavior of tantalum alloying on γ‐TiAl by double‐glow plasma surface metallurgy technique

Liu

Zhang

Wei

et al. 2017

Surface & Interface Analysis

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The Ta coating with corrosion resistance is grown on the γ-TiAl substrate by double-glow plasma surface metallurgy technique, followed by the electrochemical test in 10 wt%, 20 wt% HCl and 10 wt%, 40 wt% H 2 SO 4 solution. The data of nanohardness and elastic modulus are collected by the nanoindention test. The adhesion strength of Ta coating is investigated by means of the scratch test. The study of corrosion resistance is performed using potentiodynamic polarization and electrochemical impedance spectroscopy and measured by SEM and X-ray diffraction. Results highlight that the Ta coating is tightly bonded to the γ-TiAl substrate, consisting of the deposition layer and diffusion layer. Experimental data indicate that the Ta coating presents excellent corrosion resistance, which is confirmed by the high values of polarization resistance (R p ) and the low values of corrosion current density (i corr ). The surface nanohardness of the Ta coating is improved from 3.41 to 7.29 GPa, nearly twice of that of the substrate. The Ta 2 O 5 formed on the coating is able to hold back the penetration of adverse ions inwardly, owing to its dense structure and adhesion effect.

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Corrosion behavior of plasma electrolytically oxidized gamma titanium aluminide alloy in simulated body fluid

Cited by 16 publications

References 57 publications

Plasma Electrolytic Oxidation of Nanocomposite Coatings on Ti-6Al-7Nb alloy for Biomedical Applications

Plasma Electrolytic Oxidation of Nanocomposite Coatings on Ti-6Al-7Nb alloy for Biomedical Applications

Er,Cr:YSGG laser surface treatment of gamma titanium aluminide: Scanning electron microscopy–energy-dispersive X-ray spectrometer analysis, wettability and Eikenella corrodens and Aggregatibacter actinomycetemcomitans bacteria count—in vitro study

Corrosion behavior of tantalum alloying on γ‐TiAl by double‐glow plasma surface metallurgy technique

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