Electrochemical behavior and microstructural characterization of lanthanum-doped titanium-zirconium-molybdenum alloy

Deng, Jie; Wang, Kuaishe; Hu, Ping; Zhou, Yuhang; Tian, Changlin; Hu, Bo-Liang; Feng, Pingfa; Sheng, Rui; An, Gaili

doi:10.1016/j.jallcom.2018.05.338

Cited by 15 publications

(10 citation statements)

References 21 publications

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“…A common version of TZM alloys is lanthanum-doped titanium-zirconium-molybdenum (La-TZM) alloy with considerable properties such as high temperature oxidation, and better mechanical and physical functions. This wide range of features of La-TZM alloy have encouraged many scientists to investigate its corrosion behaviour too [92][93][94][95][96][97][98]. Deng et al [98] showed that alloying lanthanum in TZM degrades the corrosion resistance.…”

Section: Chemical Compositionmentioning

confidence: 99%

“…This wide range of features of La-TZM alloy have encouraged many scientists to investigate its corrosion behaviour too [92][93][94][95][96][97][98]. Deng et al [98] showed that alloying lanthanum in TZM degrades the corrosion resistance. Since the corrosion potential difference of La and other alloying elements in La-TZM alloy is high, the micro galvanic cell series created by this potential difference in the alloy matrix can easily cause the initiation of pits on the surface leading to intergranular corrosion.…”

Section: Chemical Compositionmentioning

confidence: 99%

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

Afzali

Ghomashchi

Oskouei

2019

Metals

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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.

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Section: Chemical Compositionmentioning

confidence: 99%

Section: Chemical Compositionmentioning

confidence: 99%

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

Afzali

Ghomashchi

Oskouei

2019

Metals

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“…Signs of metastable submicron pitting can be detected, which indicates the high resistance of the alloys to steady‐state pitting. In addition to the grain boundary intersections as high‐energy concentration sites, the half plane of surface defects may act as a preferential site for pit formation . The corroded surface of the β + ω specimen was precisely examined to analyze the concentration of constituent elements within the pits and in local corroded areas (Figure ).…”

Section: Resultsmentioning

confidence: 99%

“…The Bode phase angle plots show a distinct phase angle for all the specimens except for β + α″. The constant phase element is used to replace a capacitor to compensate for the inhomogeneity due to the existence of a second phase precipitate and superficial passive ﬁlm on the alloy . In the low‐frequency range of the single β, β + α, and β + ω specimens, the presence of high phase angles (79° and 81°) represents a stable capacitive element of the barrier layer.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, tribological performance is considered as the other crucial issue for longevity and controlling the suitability of a metallic implant in the human body system . The presence of erosive species in the body environment may challenge the wear behavior of metallic components . Accordingly, the metal‐on‐metal protease in total hip replacement can produce less wear products compared to metal‐on‐polymer or ceramic‐on‐polymer protease (0.005 vs. 0.137 and 0.072 mg, respectively) .…”

Section: Introductionmentioning

confidence: 99%

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Tribological Performance and Electrochemical Behavior of Ti‐29Nb‐14Ta‐4.5Zr Alloy in Simulated Physiological Solution

et al. 2019

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Herein, the tribological performance and in vitro electrochemical behavior of Ti‐29Nb‐13Ta‐4.6Zr (TNTZ) reinforced by various nanosized phases are investigated. The various microstructures—1) single β‐phase, 2) β + α″ martensite, 3) β + ω, and 4) β + α—are prepared through purposeful heat treatment and subsequent aging. Sliding wear tests are performed under the applied load of 5 N and sliding speed of 0.3 mm s−1 against Ti‐6Al‐4V extra‐low interstitial alloy. Wear performance of the heat‐treated alloys significantly improves compared with the solution‐treated state, where the β + ω microstructure possesses the lowest weight losses. In fact, the precipitation of the nonsharable hard nanophase improves plastic shear resistance of the subsurface and in turn prohibits premature crack initiation. Such a supporting effect of the subsurface layer also increases the stability of the superficial oxide layer and decreases the amount of metallic/oxide debris. The electrochemical performances of the elaborated microstructures are assessed through potentiodynamic polarization and electrochemical impedance spectroscopy in the simulated body fluid. Interestingly, the β + ω alloy exhibits the extraordinary corrosion resistance compared to other structures. This is attributed to the uniform distribution, spherical morphology, and coherent interface of the ω‐nanoprecipitates.

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Effects of titanium addition on the microstructure and electrochemical corrosion behaviour in TZM alloy

Tuncay

Özyürek²

2022

Appl. Phys. A

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Electrochemical behavior and microstructural characterization of lanthanum-doped titanium-zirconium-molybdenum alloy

Cited by 15 publications

References 21 publications

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

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

Tribological Performance and Electrochemical Behavior of Ti‐29Nb‐14Ta‐4.5Zr Alloy in Simulated Physiological Solution

Effects of titanium addition on the microstructure and electrochemical corrosion behaviour in TZM alloy

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