Effects of Microstructure and Rare-Earth Constituent on the Oxidation Behavior of Ti–5.6Al–4.8Sn–2Zr–1Mo–0.35Si–0.7Nd Titanium Alloy

Zhang, S. Z.; Liu, N.; Chen, L. Q.

doi:10.1007/s11085-013-9445-4

Cited by 13 publications

(6 citation statements)

References 25 publications

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“…However it was reported that the addition of Ti to Zr reduces the susceptibility of the localized corrosion . Transition metal/oxide interfaces have been attracted because they are used in many applications . Thus, surface modification of ZrTi alloys can provide a route to obtain new metal/oxide interfaces with sufficient chemical stability for use in biomedical applications .…”

Section: Introductionmentioning

confidence: 99%

Effect of thermal oxidation on electrochemical corrosion behaviour of ZrTi alloys for dental applications

Mareci

Bolat

Istrate

et al. 2015

Materials & Corrosion

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Electrochemical behaviour of Zr5Ti, Zr25Ti and Zr45Ti, with and without surface modification were investigated for dental applications. All untreated and thermal oxidized alloys in Na2CO3 at 890 °C were tested by electrochemical impedance spectroscopy (EIS) performed in 10% carbamide peroxide solution. In addition, scanning electron microscopy (SEM) was employed to observe the surface morphology before and after 8 hours immersion time in carbamide peroxide solution. The electrochemical corrosion parameters obtained from the EIS indicated a typical passive behaviour for untreated and thermal oxidized ZrTi alloys. Higher impedance values were observed for thermal oxidized ZrTi alloys compared to untreated materials. The thermal oxidized Zr45Ti alloy appears to possess superior corrosion resistance than the thermal oxidized Zr25Ti and Zr5Ti alloys in carbamide peroxide solution.

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Section: Introductionmentioning

confidence: 99%

Effect of thermal oxidation on electrochemical corrosion behaviour of ZrTi alloys for dental applications

Mareci

Bolat

Istrate

et al. 2015

Materials & Corrosion

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“…The lower Nb content and oxidation temperature caused the weak peak intensity of With the increase of Nb content, the diffraction peak intensity of TiO 2 and Al 2 O 3 became stronger, and the peak of Ti x O constantly decreased. This phenomenon illustrated that the solution interstices of oxygen are captured by Nb atom, and the research shows that Nb atoms may take place the Ti atoms in the α-Ti lattice and it can promote the formation of TiO 2 and Al 2 O 3 [10]. The Al 2 (MoO 4 ) 3 phase was first discovered in oxidation surface of Ti-1100-1.5Nb oxidation at 650 • C, and its peak is stronger.…”

Section: Analysis Of Oxidation Kineticsmentioning

confidence: 85%

“…The interaction of Nb, O, Ti, and other elements retarded the diffusion of O atoms into the alloys, which improves the oxidation resistance. surface increases, even the TiO 2 particles dissolve [10]. Researches showed that the addition of 5-10 at.% Nb could improve the oxidation resistance of Ti-Al alloys [11,12].…”

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confidence: 99%

Effect of Nb Content on Cyclic Oxidation Behavior of As-Cast Ti-1100 Alloys

Song

Dong

et al. 2020

Materials

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The cyclic oxidation behaviors of the as-cast Ti-1100-xNb (x = 0.5, 1.0, 1.5, 2.0) alloys exposed at 650 • C for up to 100 h were systematically investigated. The aim of this work is to explore the in-depth oxidation mechanism by using the oxidation kinetics and the structure of the oxide products. The oxidation kinetics were determined by thermogravimetrically, and the microstructure and composition of the oxidation scale were studied by using XRD and SEM. The results demonstrate that Nb can significantly improve the oxidation resistance. However, the average weight gains of the alloys decrease firstly and then increase with the increase of Nb content. The oxidation kinetics obeys a parabolic model. The Ti-1100-1.0Nb alloy has the lowest k p value, which is 5.7 × 10 −13 g 2 cm −4 s −1 . The surface oxidation products are mainly composed of massive or acicular rutile-TiO 2 , Ti x O (x = 3, 6), NbO 2 and Al 2 O 3 . Besides, Al 2 (MoO 4 ) 3 oxide is also presented on the oxidation surface of the Ti-1100-1.5Nb alloys. Ti-1100-1.0Nb alloy shows the best oxidation resistance property revealed by combining weight gains and EDS-SEM element content profiles analysis. The interaction of Nb, O, Ti, and other elements retarded the diffusion of O atoms into the alloys, which improves the oxidation resistance. surface increases, even the TiO 2 particles dissolve [10]. Researches showed that the addition of 5-10 at.% Nb could improve the oxidation resistance of Ti-Al alloys [11,12]. The effects of Nb atoms on oxidation behavior could be summarized as [13][14][15][16]: (1) Nb replaced the Ti 4+ in TiO 2 , leading to a reduce of O 2− vacancy, which hampered the diffusion of O ion. (2) Nb could improve the activity of Al and promote the formation of the density Al 2 O 3 oxide film in TiO 2 oxide-layer, which can reduce the solubility of O atoms in oxide-layer. (3) Nb could reduce the solubility of O in α-Ti phase lattice. However, the solid solubility of Nb in titanium alloys is limited, and the interaction of Nb with Al, Sn, Zr, Mo, and Si in the Ti-1100 alloy can form the secondary phase and change the surface oxide structure [7]. With increasing Nb element, excessive Nb segregates in the grain boundary, which may result in the oxide scales cracking and high temperature oxidation resistance depreciation [8,17]. The content of Nb in the near α titanium alloy is usually between 0.7-1.0 wt.% [18], and the excess Nb content can be selected as 1.5 and 2.0 wt.%.Thus, the effect of Nb content (0.5, 1.0, 1.5, 2.0 wt.%) on cyclic oxidation behavior of as-cast Ti-1100 alloys was systematically investigated in this present work. The aim of this study is to explore the in-depth oxidation mechanism from the oxidation kinetics, surface oxidation products, and the cross-section oxidation layer elements distribution.

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“…Huang [ 12 ] pointed out that in situ TiC p reinforcements can enhance the oxidation resistance of TiC p /Ti–6Al–4V composite by pinning oxidation scale and blocking oxygen diffusion. Moreover, the oxidation resistance of as‐cast TiC/Ti–6Al–4V composites can be improved by the uniformly distributed in situ TiC particles as reported by Qin et al [ 13 ] Research by Leyens [ 14 ] and Zhang [ 15 ] indicated that the titanium alloy with lamellar microstructure has better oxidation resistance than that with bimodal microstructure. According to the literatures mentioned earlier, the roles of grain refinement and uniformly distributed reinforcements on the oxidation resistance seem opposite.…”

Section: Introductionmentioning

confidence: 87%

Direct Rolling of TiC_p/Ti–6Al–4V Composite for Improved Microstructure, Mechanical Properties, and High‐Temperature Oxidation Resistance

Jia

Zhang

et al. 2021

Adv Eng Mater

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Herein, the 5 vol% TiCp/Ti–6Al–4V composite is prepared by induction skull melting (ISM) and direct rolling in near‐β phase region. The microstructure, mechanical properties, and high‐temperature oxidation behavior of the as‐cast and as‐rolled composites are systematically investigated. The investigations of microstructure reveal that the as‐cast coarse α/β lamellar matrix microstructure is translated to refined bimodal microstructure after direct rolling. And the coarse and segregated TiC particles tend to be refined and uniformly distributed in the matrix. Tensile test results exhibit that a well‐matched strength and elongation is obtained after direct rolling. The tensile strength at room temperature (RT) and high temperature (650 °C) increases to 1291.9 and 472.5 MPa, respectively, while the as‐rolled composite maintains a good elongation of 6.7% and 26.8%, respectively. The strengthening mechanism can be attributed to grain boundary strengthening and the load‐bearing capability of TiC. Isothermal oxidation test indicates that as‐rolled composite exhibits better oxidation resistance than as‐cast composite both at 550 and 650 °C. The improved oxidation resistance is mainly a result of the significant refinement of oxides and consequently retarding the diffusion process.

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Effects of Microstructure and Rare-Earth Constituent on the Oxidation Behavior of Ti–5.6Al–4.8Sn–2Zr–1Mo–0.35Si–0.7Nd Titanium Alloy

Cited by 13 publications

References 25 publications

Effect of thermal oxidation on electrochemical corrosion behaviour of ZrTi alloys for dental applications

Effect of thermal oxidation on electrochemical corrosion behaviour of ZrTi alloys for dental applications

Effect of Nb Content on Cyclic Oxidation Behavior of As-Cast Ti-1100 Alloys

Direct Rolling of TiC_p/Ti–6Al–4V Composite for Improved Microstructure, Mechanical Properties, and High‐Temperature Oxidation Resistance

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Effects of Microstructure and Rare-Earth Constituent on the Oxidation Behavior of Ti–5.6Al–4.8Sn–2Zr–1Mo–0.35Si–0.7Nd Titanium Alloy

Cited by 13 publications

References 25 publications

Effect of thermal oxidation on electrochemical corrosion behaviour of ZrTi alloys for dental applications

Effect of thermal oxidation on electrochemical corrosion behaviour of ZrTi alloys for dental applications

Effect of Nb Content on Cyclic Oxidation Behavior of As-Cast Ti-1100 Alloys

Direct Rolling of TiCp/Ti–6Al–4V Composite for Improved Microstructure, Mechanical Properties, and High‐Temperature Oxidation Resistance

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Product

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Direct Rolling of TiC_p/Ti–6Al–4V Composite for Improved Microstructure, Mechanical Properties, and High‐Temperature Oxidation Resistance