Sliding Wear Behavior of UNS R56400 Titanium Alloy Samples Thermally Oxidized by Laser

Salguero, Jorge; Pedemonte, Francisco Javier Botana; Galvin, Marta Botana; Salguero, Jorge; Bárcena, Mariano Marcos

doi:10.3390/ma10070830

Cited by 15 publications

(12 citation statements)

References 30 publications

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“…The oxide films on titanium have been confirmed to offer enhanced tribological protection in both dry and lubricated conditions. They also provide additional corrosion protection as a physical or chemical barrier layer [23][24][25][26][27][28][29][30][31]. The tribocorrosion behavior of the thermally oxidized commercially pure titanium have been studied before [32,33].…”

Section: Introductionmentioning

confidence: 99%

The Tribocorrosion and Corrosion Properties of Thermally Oxidized Ti6Al4V Alloy in 0.9 wt.% NaCl Physiological Saline

et al. 2018

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Thermal oxidation of Ti6Al4V was carried out at 700 °C for 5 h in air atmosphere. The characteristics of morphology and structure, micro-hardness, and tribocorrosion behavior in 0.9 wt.% NaCl solution of thermally oxidized Ti6Al4V alloys were investigated and compared with those of the untreated one. The scanning electron microscope (SEM) and glow discharge spectrometer (GDS) results reveal that the oxide layer is completely coated on the substrate, which is a bilayer structure consisted of oxide film and oxygen diffusion zone (ODZ). X-ray diffraction (XRD) and Raman measurements reveal the rutile phase as the dominant phase. The micro-hardness and surface roughness (Ra) increase about 1.63 and 4 times than those of the untreated one. Thermally oxidized sample obtains corrosion and tribocorrosion resistance property in 0.9 wt.% NaCl solution. The corrosion potential has a more than 500 mV anodic shift, the corrosion current density decreases about 80%. The total material loss volume is reduced by almost an order of magnitude under tribocorrosion behavior, which is due to the improvement of the micro-hardness of the oxide layer and ODZ that reduce the corrosion and the synergistic effect of corrosion and wear.

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Section: Introductionmentioning

confidence: 99%

The Tribocorrosion and Corrosion Properties of Thermally Oxidized Ti6Al4V Alloy in 0.9 wt.% NaCl Physiological Saline

et al. 2018

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“…Although there are a wide range of modification treatments by chemical and mechanical procedures to adapt the surface to specific conditions, some treatments such as knurling can generate mechanical stress, and in other cases surface contamination, or result in variations of the properties in the inner layers of the alloy. In this aspect, surface texturing treatments using laser techniques allow the generation of topographies with microgeometry, and properties that are adapted to specific working conditions, without affecting the deeper layers of the material [14,[16][17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Effects of Laser Microtexturing on the Wetting Behavior of Ti6Al4V Alloy

Salguero

Mayuet³

et al. 2018

Coatings

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Surface modification procedures by laser techniques allow the generation of specific topographies and microstructures that enable the adaptation of the external layers of materials for specific applications. In laser texturing processes, it is possible to maintain control over the microgeometry and dimensions of the surface pattern through varying the processing parameters. One of the main areas of interest in the field of surface modification treatments is the ability to generate topographies that are associated with specific surface finishes, in terms of roughness, that can improve the manufactured part's functional capabilities. In this aspect, several types of phenomena have been detected, such as the friction and sliding wear behavior or wetting capacity, which maintain a high dependence on surface roughness. In this research, surface texturing treatments have been developed by laser techniques through using the scanning speed of the beam (V s) as a control parameter in order to generate samples that have topographies with different natures. Through assessments of surface finish using specialized techniques, the dimensional and geometrical features of the texturized tracks have been characterized, analyzing their influence on the wetting behavior of the irradiated layer. In this way, more defined texturing grooves has been developed by increasing the V s , which also improves the hydrophobic characteristics of the treated surface. However, due to the lack of uniformity in the solidification process of the irradiated area, some deviations from the expected trends and singular points can be observed. Using the contact angle method to evaluate the wetting behavior of the applied treatments found increases in the contact angle values for high texturing speeds, finding a maximum value of 65.59 • for V s = 200 mm/s.

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“…Methods for improving the surface properties of titanium alloys include electroless plating [4,5], electrodeposition [6], laser cladding [7,8], spray coating [9], air atmosphere treatment [10], laser assisted machining [11,12] and laser heat treatment [13][14][15]. Electrodeposition with a simple process and low cost is commonly used in the preparation of nan materials, composite plating, and special function plating [15,16].…”

Section: Introductionmentioning

confidence: 99%

Properties of Jet-Plated Ni Coating on Ti Alloy (Ti6Al4V) with Laser Cleaning Pretreatment

Wang

et al. 2019

Metals

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The surface mechanical properties of the Selective Laser Melting (SLM) formed Ti6Al4V samples were improved by adopting a novel laser cleaning pretreatment process combined with a jet electrodeposition process. This paper aimed to investigate the effects of different laser powers on the morphologies and adhesions of the nickel coatings. The advantages of the laser cleaning process are no grinding, no contact, high efficiency and environmental protection. The morphologies, adhesion, wear resistance, and hardness of the coatings were characterized. The results indicate that when the laser energy density reached 20% (4 J/cm2), the contaminations on the substrate and the oxide layer were removed and the crystalline grain of the coating was 15.3 nm. The shallow pits generated by laser burning increased the adhesion of the coatings. In addition, when the laser energy density increased to 6 J/cm2, a yellow oxide layer was produced on the surface of the cleaned titanium alloy. Moreover, the wear resistance of the titanium alloy after the nickel plating was improved. The wear volume was only 0.046 mm3, and the hardness increased to 1967.6 N/mm2.

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Sliding Wear Behavior of UNS R56400 Titanium Alloy Samples Thermally Oxidized by Laser

Cited by 15 publications

References 30 publications

The Tribocorrosion and Corrosion Properties of Thermally Oxidized Ti6Al4V Alloy in 0.9 wt.% NaCl Physiological Saline

The Tribocorrosion and Corrosion Properties of Thermally Oxidized Ti6Al4V Alloy in 0.9 wt.% NaCl Physiological Saline

Effects of Laser Microtexturing on the Wetting Behavior of Ti6Al4V Alloy

Properties of Jet-Plated Ni Coating on Ti Alloy (Ti6Al4V) with Laser Cleaning Pretreatment

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