Influence of the composition of titanium oxynitride layers on the fretting behavior of functionalized titanium substrates: PVD films versus surface laser treatments

Torrent, F. Raspall; Lavisse, L.; Berger, Pascal; Pillon, G.; Lopes, C.; Vaz, F.; Lucas, M.C. Marco de

doi:10.1016/j.surfcoat.2014.03.059

Cited by 18 publications

(17 citation statements)

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“…It is worth remembering that the diffusion coefficient of nitrogen in the rutile phase is higher than that of nitrogen in the α titanium phase [5]. The excellent oxide scale adherence can be explained by the presence of an oxynitrides layer as previously reported by Torrent et al [15]. For US samples, the insertion of nitrogen leads to the formation of discontinuous titanium oxynitride slabs.…”

Section: Discussionmentioning

confidence: 89%

“…However, shot-peening can induce surface contamination due to the wear of the balls during the treatment [12]. In this context, laser surface treatments have also been proposed as a competitive alternative technology to improve fatigue, corrosion and wear resistance of metals [11,[13][14][15][16][17]. The high pressure shock wave generated in the interaction of a nanosecond pulsed laser beam (with power density in the GW/cm 2 range) with the metal surface can produce deep compressive residual stresses with less cold work compared to SP [11].…”

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confidence: 99%

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Effect of laser shock peening on the high temperature oxidation resistance of titanium

Kanjer

Lavisse

Optasanu

et al. 2017

Surface and Coatings Technology

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a b s t r a c tThe effect of laser shock peening on the high temperature oxidation resistance of commercial pure titanium at high temperature (700°C) was studied in long-time (3000 h) exposure under dry air. A reduction of the gain mass by a factor 4 was found for laser-shock peened (LSP) samples compared to untreated titanium, which supports the interest of laser-shock treatment for the improvement of high temperature resistance. Short-durations (10 h and 100 h) oxidation experiments, devoted to investigate the influence of the LSP treatment on the first stages of the oxidation process, were also carried out by TGA. Several techniques as scanning electron microscopy, hardness and roughness measurements, X-ray diffraction and X-ray photoelectron spectrometry, microRaman spectroscopy, nuclear reaction analysis and electron backscattered diffraction were used to characterize the sample after laser treatment and oxidations. The formation of a continuous nitrogen-rich layer between the oxide layer and the α-case area in LSP samples appears to be the key factor to explain the reduction of oxygen diffusion, and thus the improvement of the oxidation resistance of laser shocked titanium. Moreover, the graintexture of LSP samples after oxidation can also explain the improvement of the high temperature oxidation resistance after long times exposures.

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Section: Discussionmentioning

confidence: 89%

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confidence: 99%

Effect of laser shock peening on the high temperature oxidation resistance of titanium

Kanjer

Lavisse

Optasanu

et al. 2017

Surface and Coatings Technology

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“…Thus, surface modification is a possible way to overcome the corrosion delinquent as well as improve the surface properties and biocompatibility. A promising way to improve such properties is the formation of titanium oxynitrides (TiN x O y ) on the surface by the addition of oxygen to TiN matrix …”

Section: Introductionmentioning

confidence: 99%

“…Titanium oxynitrides have gained increasing importance in various applications due to their enormous physical and chemical properties that exceed the properties of titanium nitrides (hardness and wear resistance) and oxides (optical properties and chemical stability) . The TiN x O y application depends on the nitrogen to oxygen (N/О) ratio: nitrogen‐rich films are used as antireflective coatings or biomaterials while oxygen‐rich ones are applied for thin film resistors or solar selective collectors .…”

Section: Introductionmentioning

confidence: 99%

Influence of regulated modification of nitride layer by oxygen on the electrochemical behavior of Ti–6Al–4V alloy in the Ringer's solution

Pohrelyuk

Ткачук

Proskurnyak

et al. 2019

Materials & Corrosion

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The corrosion behavior of oxynitrided Ti-6Al-4V alloy was investigated in the Ringer's solution (simulated body fluid) at a temperature of 37°C. The oxynitriding of the alloy was carried out by leaking controlled oxygencontaining medium into the reaction chamber at the final stage of the nitride formation. It was determined that oxynitriding improved corrosion resistance of Ti-6Al-4V alloy as it provided lower corrosion current density by 1.3-1.5 times and higher corrosion potential. In this paper, we analyzed that the resistance of the double layer had increased with the increase of the oxygen content in titanium oxynitride. Its value was higher compared with untreated alloy, indicating higher corrosion resistance of the oxynitrided one. K E Y W O R D S corrosion, oxynitriding, Ringer's solution, Ti-6Al-4V alloy

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“…The usage of high energy beam surface treatments for modifying the chemical composition of metallic surfaces has increased. Examples of these techniques include ion beam implantation [22], electron beam alloying [23], laser surface glazing [24] and laser surface cladding [25,26].…”

Section: Surface Treatment Techniquesmentioning

confidence: 99%

UQ eSpace

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Fabián²

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Ti-6Al-4V is widely used in aerospace, aeronautical and military applications due to its excellent mechanical properties, especially its high strength to weight ratio and corrosion resistance. Nevertheless, poor wear and oxidation resistance has limited the utilization of this material in broader applications. This is why hard ceramic coatings are typically applied to the surface of Ti alloy with the purpose to improve its tribological properties. Characterizing the fracture strength of the coatings layers becomes critical as it determines the lifetime and structural integrity of the protective coating in service. In this project, fracture strength characterization of two typical TiO2 coatings on Ti-6Al-4V alloy produced by laser cladding process was carried out. This was achieved by using a combination of focused ion beam (FIB) milling, nanoindentation and finite element analysis (FEA) techniques. Firstly, the Ti-6Al-4V substrates were coated with a layer of titanium oxide, using laser scanning speed of 300mm/s, and laser power of 100W and 150W. The metallurgical cross-sections of the coatings were then examined using an optical microscope to characterize the microstructure of the solidified oxide coating. A FEI SCIOS FIB Dual Beam system was then used to manufacture the micro-scale cantilevers on the coatings and nanoindentation tests were performed to bend the microcantilever beams to failure. The critical load and deflection were recorded. At last, FEA models were created to simulate the bending behaviour of the microcantilevers during the bending test. And the maximum tensile stresses generated as the cantilevers failed were then used as the fracture strength. This methodology allowed us to conclude that all the cantilevers failed in a brittle fashion. Also, both SEM images and FEA simulations agree that fracture was initiated close to the base given that the highest stresses were identified in this area. The mean fracture strengths of the coating materials were 7.79 and 7.68 GPa, respectively. A through error analysis was conducted. It was concluded that the accuracy of this methodology was affected by the following factors: • Manufactured cantilevers had some curvature and the cross-sections were not completely symmetric. However, the microcantilevers were modelled flat and symmetric in order to simplify the model. • Measuring the actual dimensions of the cantilever beams was challenging due to its rounded edges. IV | P a g e Henry RAMIREZ MECH4501-Engineering Thesis ACKNOWLEDGEMENTS This thesis project would have been impossible without the aid and support of my supervisor, Dr. Mingyuan Lu. For always having willingness to help me during the execution of this project, for her patience, enthusiasm, motivation and vast knowledge. I cannot imagine having a better mentor and supervisor than her. Besides my advisor, I would like to express my sincere gratitude to the lecturers from all the subjects I took during my studies at UQ. In special to Prof. Hal Gurgenci, Prof. Ross McAree, Dr. Jeff Gates and Prof. Kaz...

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Influence of the composition of titanium oxynitride layers on the fretting behavior of functionalized titanium substrates: PVD films versus surface laser treatments

Cited by 18 publications

References 29 publications

Effect of laser shock peening on the high temperature oxidation resistance of titanium

Effect of laser shock peening on the high temperature oxidation resistance of titanium

Influence of regulated modification of nitride layer by oxygen on the electrochemical behavior of Ti–6Al–4V alloy in the Ringer's solution

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