Improving the Adhesion of a Hard Oxide Layer on Ti6Al4V by a Three‐Step Thermal Oxidation Process

Dickes, Daniel; Öztürk, Beyza; Völkl, Rainer; Galetz, Mathias C.; Glatzel, Uwe

doi:10.1002/adem.202100864

Cited by 9 publications

(3 citation statements)

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“…The hardness of Ti6Al4V alloy was increased with the formation of an oxide layer, independent of the oxidation procedure [46]. The dependence of oxide layer composition and hardness on oxidation process parameters, particularly noting the increased hardness of TiO 2 oxide layers compared to the substrate [47]. Furthermore, there was observed a substantial increase in hardness for Ti6Al4V alloy following oxidation at 600 • C for 60 h, which has indicated the influence of oxidation conditions on hardness enhancement [48].…”

Section: Hardness Test Resultsmentioning

confidence: 87%

Effect of Oxidation Process on Mechanical and Tribological Behaviour of Titanium Grade 5 Alloy

Saier,

Esen,

Ahlatci

et al. 2024

Materials

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In this study, microstructural characterization, mechanical (tensile and compressive) properties, and tribological (wear) properties of Titanium Grade 5 alloy after the oxidation process were examined. While it is observed that the grey contrast coloured α grains are coaxial in the microstructures, it is seen that there are black contrast coloured β grains at the grain boundaries. However, in oxidised Titanium Grade 5, it is possible to observe that the α structure becomes larger, and the number and density of the structure increases. Small-sized structures can be seen inside the growing α particles and on the β particles. These structures are predicted to be Al-Ti/Al-V secondary phases. The nonoxidised alloy matrix and the OL layer exhibited a macrolevel hardness of 335 ± 3.21 HB and 353 ± 1.62 HB, respectively. The heat treatment increased Vickers microhardness by 13% in polished and etched nonoxidised and oxidised alloys, from 309 ± 2.08 HV1 to 352 ± 1.43 HV1. The Vickers microhardness value of the oxidised sample was 528 ± 1.74 HV1, as a 50% increase was noted. According to their tensile properties, oxidised alloys showed a better result compared to nonoxidised alloys. While the peak stress in the oxidised alloy was 1028.40 MPa, in the nonoxidised alloy, this value was 1027.20 MPa. It is seen that the peak stresses of both materials are close to each other, and the result of the oxidised alloy is slightly better. When we look at the breaking strain to characterise the deformation behaviour in the materials, it is 0.084 mm/mm in the oxidised alloy; In the nonoxidised alloy, it is 0.066 mm/mm. When we look at the stress at offset yield of the two alloys, it is 694.56 MPa in the oxidised alloy; it was found to be 674.092 MPa in the nonoxidised alloy. According to their compressive test properties, the maximum compressive strength is 2164.32 MPa in the oxidised alloy; in the nonoxidised alloy, it is 1531.52 MPa. While the yield strength is 972.50 MPa in oxidised Titanium Grade 5, it was found to be 934.16 MPa in nonoxidised Titanium Grade 5. When the compressive deformation oxidised alloy is 100.01%, in the nonoxidised alloy, it is 68.50%. According to their tribological properties, the oxidised alloy provided the least weight loss after 10,000 m and had the best wear resistance. This material’s weight loss and wear coefficient at the end of 10,000 m are 0.127 ± 0.0002 g and (63.45 ± 0.15) × 10−8 g/Nm, respectively. The highest weight loss and worst wear resistance have been observed in the nonoxidised alloy. The weight loss and wear coefficients at the end of 10,000 m are 0.140 ± 0.0003 g and (69.75 ± 0.09) × 10−8 g/Nm, respectively. The oxidation process has been shown to improve the tribological properties of Titanium Grade 5 alloy.

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Section: Hardness Test Resultsmentioning

confidence: 87%

Effect of Oxidation Process on Mechanical and Tribological Behaviour of Titanium Grade 5 Alloy

Saier,

Esen,

Ahlatci

et al. 2024

Materials

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“…The irradiation of Ultra-High Molecular Weight Polyethylene (UHMWPE) to create crosslinked polymers, as well as the diffusion of antioxidant vitamin E into the irradiated UHMWPE, has shown promising results in improving wear properties of polymers [6,7]. At the same time, advancements in Additive Manufacturing (AM) and subsequent postmanufacturing processes, including heat treatments, surface texturing, surface grafting and coatings, have enhanced the mechanical and wear properties of both wrought and metal AM components [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

A method for determining machine configurations for multidirectional pin-on-plate wear testing

Cremer,

Merwe,

Becker

2024

Preprint

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Pin-on-plate wear testing is a commonly employed technique for preclinical evaluation of the wear performance of articulating joint implant materials, as specified by ASTM F732. The latest revision of ASTM F732, introduced multidirectional wear assessment for 'hip-type' wear applications. While multidirectional pin-on-plate wear testing has been adopted to better account for cross-shear and mimic in vivo joint kinematics, selecting appropriate machine configuration for a particular case can be challenging due to the complex nature of the involved machine mechanisms. This study presents a method for formulating and verifying a data set that can be utilised to solve machine parameters for a specific load case. The proposed method employs standard gear radii and is demonstrated with an illustrative example case to showcase the method with a practical application. A holistic view of the parameter design space is formed in this paper, thus simplifying the overall machine parameter selection processes for multidirectional pin-on-plate wear testing.

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“…Also, sputtered Ti1.5ZrNb0.5Hf0.5Ta0.5 amorphous films on Ti6Al4V could improve the surface mechanical properties [8]. Oxidation has been successfully used to improve the wear properties of Ti6Al4V [9] and Zr alloys [10][11][12][13], raising the question if this method is also suitable for TiZrNbHfTa.…”

Section: Introductionmentioning

confidence: 99%

Surface hardening of TiZrNbHfTa high entropy alloy via oxidation

et al. 2023

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Improving the Adhesion of a Hard Oxide Layer on Ti6Al4V by a Three‐Step Thermal Oxidation Process

Cited by 9 publications

References 50 publications

Effect of Oxidation Process on Mechanical and Tribological Behaviour of Titanium Grade 5 Alloy

Effect of Oxidation Process on Mechanical and Tribological Behaviour of Titanium Grade 5 Alloy

A method for determining machine configurations for multidirectional pin-on-plate wear testing

Surface hardening of TiZrNbHfTa high entropy alloy via oxidation

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