Laser surface textured titanium alloy (Ti–6Al–4V) – Part II – Studies on bio-compatibility

Kumari, Renu; Scharnweber, Tim; Pfleging, Wilhelm; Besser, Heino; Majumdar, Jyotsna Dutta

doi:10.1016/j.apsusc.2015.08.255

Cited by 129 publications

(50 citation statements)

References 29 publications

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“…Therefore, it is believed that the improved corrosion resistance measured in the polarization tests is due to the formation of more protective oxide film on the metal surface after laser ablation. Similar results have been found in Ti-6Al-4V [27] and Ti-35.3Nb-7.3Zr-5.7Ta [24] alloys. The increase in corrosion potential of laser-treated Ti-6Al-4V was possibly due to the presence of oxide as well as formation of refined microstructure and microstructural homogenization [27].…”

Section: Science China Materialssupporting

confidence: 89%

“…Similar results have been found in Ti-6Al-4V [27] and Ti-35.3Nb-7.3Zr-5.7Ta [24] alloys. The increase in corrosion potential of laser-treated Ti-6Al-4V was possibly due to the presence of oxide as well as formation of refined microstructure and microstructural homogenization [27]. The laser-formed TiO 2 / Nb 2 O 5 layer on the surface of Ti-35.3Nb-7.3Zr-5.7Ta was contributed to the improved corrosion resistance of the alloy [24].…”

Section: Science China Materialssupporting

confidence: 89%

“…5c, d show the surface morphology images of the untreated and laser-treated TZNT samples after potentio-dynamic polarization test in Hank's solution at 37°C. Table 3 shows the corrosion potential (E corr ) and corrosion current density (i corr ) of the TZNT in this work and those of laser treated Ti-6Al-4V [27] and Ti-35.3Nb-7.3Zr-5.7Ta [24] alloys. It is seen that the E corr of the laser-treated TZNT samples increases by more than 300 mV.…”

Section: Science China Materialsmentioning

confidence: 99%

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Corrosion resistance and cytocompatibility of Ti-20Zr-10Nb-4Ta alloy surface modified by a focused fiber laser

Xue

et al. 2018

Sci. China Mater.

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The corrosion resistance and cytocompatibility of Ti-20Zr-10Nb-4Ta (TZNT) alloy modified by surface laser treatment were investigated. The scanning electron microscopy (SEM) measurements indicated that laser treatment on TZNT alloy generated groove morphologies with the width of 40 μm and the depth of~10 μm on the surface. The water contact angles along the groove direction decreased by 51% compared with that of the untreated alloy. The laser treatment promoted the oxidation of metallic Ti, Zr and Nb and produced more stable oxides on surface. The corrosion potential increased by 50% and corrosion current density decreased by 72% compared with that of the untreated alloy in the anodic polarization test for the alloy in Hank's solution at 37°C. This indicated the improvement of the corrosion resistance by laser treatment. The cytotoxicity testing results showed that the laser-treated TZNT alloy performed similar MC3T3-E1 cell viability compared with the untreated alloy. The cells displayed oriented growth along the groove direction due to the increased hydrophilicity. This novel material may be a new candidate in orthopedics and dentistry implantations fields.

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Section: Science China Materialssupporting

confidence: 89%

Section: Science China Materialssupporting

confidence: 89%

Section: Science China Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Corrosion resistance and cytocompatibility of Ti-20Zr-10Nb-4Ta alloy surface modified by a focused fiber laser

Xue

et al. 2018

Sci. China Mater.

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“…Hsiao et al [82] developed an efficient method to increase surface roughness in titanium alloy (Ti-6Al-4V) with a low energy pulsed ultraviolet (UV) laser, which was similar to laser modified surfaces. Renu et al [83] presented laser surface texturing [78,79]. Reprinted with permission from reference [78] 2015 Elsevier.…”

Section: Laser Surface Modificationmentioning

confidence: 99%

Surface Modification of Biomedical Titanium Alloy: Micromorphology, Microstructure Evolution and Biomedical Applications

2019

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With the increasing demand for bone implant therapy, titanium alloy has been widely used in the biomedical field. However, various potential applications of titanium alloy implants are easily hampered by their biological inertia. In fact, the interaction of the implant with tissue is critical to the success of the implant. Thus, the implant surface is modified before implantation frequently, which can not only improve the mechanical properties of the implant, but also polish up bioactivity and osseoconductivity on a cellular level. This paper aims at reviewing titanium surface modification techniques for biomedical applications. Additionally, several other significant aspects are described in detail in this article, for example, micromorphology, microstructure evolution that determines mechanical properties, as well as a number of issues concerning about practical application of biomedical implants.

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“…Over the decades, many researchers (Kurella et al, 2005;Kumari et al, 2015) studied LST. In 1997, a research group was applying Neodymium-Yttrium Aluminum Garnet (Nd-YAG) pulsed solid-state laser to modify the surface of aluminum alloys (Wong, et al, 1997).…”

Section: Laser Surface Texturingmentioning

confidence: 99%

Texture design for skin friction and touch perception of stainless steel surfaces

Zhang¹

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SummaryTactile perception a concept with mechanical, physiological and psychological perspective, is of particular concern to the industrial companies and research area. The hedonic attributes of tactile perception are influential to our daily life like wearing clothes, using personal care products, holding tool handles or in domestic appliances. In a more general case, the tactile perception of surfaces of domestic appliances greatly affects the quality of our daily life.Stainless steel is one of the most common materials used in automobile, architecture, kitchenware and medical applications. In order to fabricate the pre-defined deterministic surface texture on the stainless steel material, the micro-fabrication techniques are investigated and discussed. Micro-casting, Chemical Wet Etching, Plasma Etching, Laser Surface Texturing LST and 3D Printing are the major fabrication methods to produce deterministic micro-structure in micro scale detail. In this thesis, LST is chosen to be the main fabrication method for producing the surface texture due to its accuracy and ability to fabricate on stainless steel sheet material.A skin contact model was modified based on Hertzian and Westergaard model to take into account the influence of surface texture and orientation effect. This two-term friction model enables the prediction of the contact area, sliding friction between the skin and counter-surface.Furthermore, the tactile perception involved textures were designed and investigated in both perception experiments and skin friction measurements. The thesis focusses on the relationships among tactile perception, sub-micron surface roughness features and friction at light touch conditions, with the general aim to discover design principles that enhance tactile perception.For the perception experiments, a panel test was conducted and the subjective ratings from 0 to 10 were graded by each participant to describe the level of perceived roughness, perceived stickiness and perceived comfort. For the skin friction measurements, a multi-axis force/torque transducer was used to measure the dynamic friction between skin and counter-surface in vivo.The correlation of the perception experiment and friction measurement provides design tools for texture design of future product surfaces. With the presented tactile friction model, a strategy was extracted for optimizing surfaces with respect to tactility. The pivotal element is minimizing the adhesion term of friction by minimizing the contact area by designing a surface texture with minimal contact area in sliding motion. In addition, the orientation effect is another key factor for the texture design. The results of the study can be beneficial to understand the tactility related research and product developments in the future.

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Laser surface textured titanium alloy (Ti–6Al–4V) – Part II – Studies on bio-compatibility

Cited by 129 publications

References 29 publications

Corrosion resistance and cytocompatibility of Ti-20Zr-10Nb-4Ta alloy surface modified by a focused fiber laser

Corrosion resistance and cytocompatibility of Ti-20Zr-10Nb-4Ta alloy surface modified by a focused fiber laser

Surface Modification of Biomedical Titanium Alloy: Micromorphology, Microstructure Evolution and Biomedical Applications

Texture design for skin friction and touch perception of stainless steel surfaces

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