Wear assessment of a Ti–6Al–4V motion-preserving porous artificial-cervical-joint fabricated by SLM after surface carburization

Yang, Wenlong; Diao, Hao; Hua, Xueming; Chen, Wei; Wang, Shaopeng; Li, Xue; Zhang, Jin; Li, Haopeng; He, Xijing

doi:10.1016/j.ceramint.2022.05.296

Cited by 10 publications

(3 citation statements)

References 29 publications

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“…At the same time, we analyzed the elemental distribution of the contact surface between the coating surface and the friction pair, as shown in Figure 11. This indicated the formation of TiO 2 films on the coating surface during the friction process, which could also be found in the research of Yang et al 41 The formation of TiO2 film can be explained by two aspects. On the one hand, the flash heat formed between the friction pairs during wear promotes the formation of Ti and O elements, which are uniformly distributed on the surface of the coating under cyclic loading.…”

Section: Loss L3nsupporting

confidence: 79%

Effect of GO content on microstructure and mechanical properties of Ti6Al4V coating reinforced artificial joint

Gong,

Cui,

et al. 2023

Proc Inst Mech Eng H

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In this study, we have innovatively proposed a method of in-situ synthesized TiC hard phase to improve the surface mechanical properties of artificial joint materials (Ti6Al4V). In order to explore the optimum graphene oxide (GO) addition, GO/Ti6Al4V composite powders with different proportions (0, 0.5, 1.0, and 1.5 wt.%) were prepared. The homogeneously dispersed GO/Ti6Al4V composite powder was prepared on Ti6Al4V substrate by laser cladding technology. The microstructure, phase composition, and mechanical behavior of GO/Ti6Al4V composite coatings were studied by scanning electron microscope (SEM), optical microscope (OM), energy dispersive spectrometer (EDS), tribometer, hardness tester, and surface profiler. The results showed that the addition of GO could significantly improve the mechanical properties of TC4 substrate. During the preparation of the coating, the grain size of in-situ TiC phase was nanoscale and was distributed between acicular martensite, which played a critical role in enhancing the mechanical properties of the coating. The TiC phase distributed between acicular martensite refine the grain size of [Formula: see text] phase and improve the cutting resistance of the coating. Nevertheless, excessive GO decreased the fluidity of the molten pool, and micro holes tended to generate in the coating, which had a negative impact on the mechanical properties of the coating. At the GO content of 0.5 wt.%, the microhardness of the GO/Ti6Al4V coating was 1.325 times that of pure Ti6Al4V. Under the friction environment of simulated body fluid solution, the average friction coefficient was approximately 0.307 and the wear rate decreased to 3.5 × 10−7 mm3/N · m.

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Section: Loss L3nsupporting

confidence: 79%

Effect of GO content on microstructure and mechanical properties of Ti6Al4V coating reinforced artificial joint

Gong,

Cui,

et al. 2023

Proc Inst Mech Eng H

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“…TC4 alloy is one of the most researched and widely used materials for SLM molding because of its high specific strength, good corrosion resistance and biocompatibility properties. SLM TC4 alloy formed components had been used in areas such as space engines and biological implant materials [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Effect of building direction on microstructure and mechanical properties of SLM TC4 alloy

Li,

Liu

et al. 2024

J. Phys.: Conf. Ser.

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In the selective laser melting (SLM) technology, the microstructure and mechanical properties of the sample were affected by the building direction. In this paper, the effects of building direction on the microstructure and mechanical properties of SLM TC4 alloy were investigated of using optical microscope, scanning electron microscope, microhardness tester and MTS-Landmar material testing machine. The results show that the microstructure of SLM TC4 alloy consists of acicular martensitic α′ phase. The microstructure of SLM TC4 alloy in the horizontal build direction (H) was observed to have “checkerboard” shape, while the microstructure of SLM TC4 alloy in the vertical build direction (V) was observed to have column shape. The microhardness of SLM TC4 alloy with different building directions are almost the same and the tensile properties are different. The yield and tensile strengths of sample H are higher at 995.5 MPa and 1139.3 MPa, but the fracture elongation of sample V is better at 10.3%. The fracture mechanism of SLM TC4 alloy is ductile fracture and the V sample has large and deep dimples.

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“…Various types of Ti implants are widely used in clinical medical restoration. Figure A-G illustrates the application of Ti implants in various human tissues, including skull, , dental implant, − joint replacement, , bone scaffold, knee, and stent . Scientific research on Ti implants has been a hot topic and continues to grow in popularity.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification and Functionalities for Titanium Dental Implants

Sun,

Liu,

Wang

et al. 2023

ACS Biomater. Sci. Eng.

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Dental implants have become the mainstream strategy for oral restoration, and implant materials are the most important research hot spot in this field. So far, Ti implants dominate all kinds of implants. The surface properties of the Ti implant play decisive roles in osseointegration and antibacterial performance. Surface modifications can significantly change the surface micro/nanotopography and composition of Ti implants, which will effectively improve their hydrophilicity, mechanical properties, osseointegration performance, antibacterial performance, etc. These optimizations will thus improve implant success and service life. In this paper, the latest surface modification techniques of Ti dental implants are systematically and comprehensively reviewed. The various biomedical functionalities of surface modifications are discussed in-depth. Finally, a profound comment on the challenges and opportunities of this frontier is proposed, and the most promising directions for the future were explored.

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Wear assessment of a Ti–6Al–4V motion-preserving porous artificial-cervical-joint fabricated by SLM after surface carburization

Cited by 10 publications

References 29 publications

Effect of GO content on microstructure and mechanical properties of Ti6Al4V coating reinforced artificial joint

Effect of GO content on microstructure and mechanical properties of Ti6Al4V coating reinforced artificial joint

Effect of building direction on microstructure and mechanical properties of SLM TC4 alloy

Surface Modification and Functionalities for Titanium Dental Implants

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