TiAl–nHA composite coatings for sintering protection of carbon fiber and improvement of carbon fiber–hydroxyapatite composites interface

Zhao, Xueni; Shi, Xiaohong; Zhang, Weigang; Wang, Xudong; Zhang, Leilei

doi:10.1016/j.jallcom.2020.157027

Cited by 7 publications

(4 citation statements)

References 36 publications

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“…The most frequently used titanium alloy for medical applications today is Ti6Al4V [9]. Nevertheless, Ti6Al4V alloys are normally restricted to non-friction occasions due to the low hardness and poor wear resistance properties and they also present poor corrosion resistance properties in aggressive environments [10,11]. Cruz, Souza [12] stated that the degradation of titanium implants is as a result of a combination of micro-motions, the working environment and poor wear resistance.…”

Section: Introductionmentioning

confidence: 99%

“…In recent research, hydroxyapatite (HAp) is considered the most biocompatible material for use in the replacement and regeneration of bone material [13]. The main component that is present in the hard-body tissues is a hydroxyapatite nanostructure [11]. HAp is widely utilized as a bioactive coating material in metallic implants in biomedical applications due to their outstanding biocompatibility, osteo-conductivity and its chemical and structural similarity to natural bone.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Ti-Al-xNb Ternary Alloys via Laser-Engineered Net Shaping for Biomedical Application: Densification, Electrochemical and Mechanical Properties Studies

Kanyane

Popoola

Pityana³

et al. 2022

Materials

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The lives of many people around the world are impaired and shortened mostly by cardiovascular diseases (CVD). Despite the fact that medical interventions and surgical heart transplants may improve the lives of patients suffering from cardiovascular disease, the cost of treatments and securing a perfect donor are aspects that compel patients to consider cheaper and less invasive therapies. The use of synthetic biomaterials such as titanium-based implants are an alternative for cardiac repair and regeneration. In this work, an in situ development of Ti-Al-xNb alloys were synthesized via laser additive manufacturing for biomedical application. The effect of Nb composition on Ti-Al was investigated. The microstructural evolution was characterized using a scanning electron microscope (SEM) equipped with energy dispersive spectroscopy (EDS). A potentiodynamic polarization technique was utilized to investigate the corrosion behavior of TiAl-Nb in 3.5% NaCl. The microhardness and corrosion behaviour of the synthesized Ti-Al-Nb alloys were found to be dependent on laser-processing parameters. The microhardness performance of the samples increased with an increase in the Nb feed rate to the Ti-Al alloy system. Maximum microhardness of 699.8 HVN was evident at 0.061 g/min while at 0.041 g/min the microhardness was 515.8 HVN at Nb gas carrier of 1L/min, respectively.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of Ti-Al-xNb Ternary Alloys via Laser-Engineered Net Shaping for Biomedical Application: Densification, Electrochemical and Mechanical Properties Studies

Kanyane

Popoola

Pityana³

et al. 2022

Materials

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“…The new class of functionally graded HAp-based coatings, consisting of two or more than two continuous or discontinuous layers or graded composition and microstructure, can solve the problems of the sharp interface between two dissimilar materials. , FGMs (functionally graded materials) can significantly enhance the interfacial adhesion strength (>40 MPa) and thereby facilitate the smooth transition of heat through the thickness with decreased thermal and residual stresses . Similarly, the addition of carbon fibers and graphene , in HAp is beneficial in terms of enhancing the strength of the coating.…”

Section: Introductionmentioning

confidence: 99%

“…42,43 FGMs (functionally graded materials) can significantly enhance the interfacial adhesion strength (>40 MPa) and thereby facilitate the smooth transition of heat through the thickness with decreased thermal and residual stresses. 44 Similarly, the addition of carbon fibers 45 and graphene 35,46 in HAp is beneficial in terms of enhancing the strength of the coating.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Hydroxyapatite Composites for Orthopedic Applications: A Review

George

Nayak

Singh

et al. 2022

ACS Biomater. Sci. Eng.

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Being a bioactive material, hydroxyapatite (HAp) is regarded as one of the most attractive ceramic biomaterials for bone and hard-tissue replacement and regeneration. Despite its substantial biocompatibility, osteoconductivity, and compositional similarity to that of bone, the employment of HAp is still limited in orthopedic applications due to its poor mechanical (low fracture toughness and bending strength) and antibacterial properties. These significant challenges lead to the notion of developing novel HAp-based composites via different fabrication routes. HAp, when efficaciously combined with functionally graded materials and antibacterial agents, like Ag, ZnO, Co, etc., form composites that render remarkable crack resistance and toughening, as well as enhance its bactericidal efficacy. The addition of different materials and a fabrication method, like 3D printing, greatly influence the porosity of the structure and, in turn, control cell adhesion, thereby enabling biological fixation of the material. This article encompasses an elaborate discussion on different multifunctional HAp composites developed for orthopedic applications with particular emphasis on the incorporation of functionally graded materials and antibacterial agents. The influence of 3D printing on the fabrication of HAp-based scaffolds, and the different in vitro and in vivo studies conducted on these, have all been included here. Furthermore, the present review not only provides insights and broad understanding by elucidating recent advancements toward 4D printing but also directs the reader to future research directions in design and application of HAp-based composite coatings and scaffolds.

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Influence of Natural Serpentine on Tribological Performance of Phosphate Bonded Solid Coatings

Sun

Chen

et al. 2022

Tribol Lett

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Natural serpentine powders were incorporated into phosphate bonded solid coatings to promote the antiwear performance of the phosphate coatings. Optimal mass percent of natural serpentine in phosphate coatings was rstly explored. Thereafter, in order to stimulate layer slip of natural serpentine and strengthen interfacial interaction between natural serpentine and counterface during the friction process, tribological performance of the composite coatings under different friction condition was properly investigated. The experimental result indicated that the optimal incorporation of natural serpentine in phosphate coatings was 10 wt.%, through which anti-wear performance of phosphate coatings was signi cantly elevated. Additionally, accompanied by the increase of applied load and sliding speed, natural serpentine was activated by friction force and local friction heat, and simultaneously interfacial interactions between naturals serpentine and counterface were intensi ed. As a result, a continuous protective tribo-lm was in-situ formed on the counterface, through which anti-wear performance of phosphate coatings were signi cantly promoted. At the same time, serious furrows generated on the counterface were also effectively self-repaired during the friction process, and further abrasion on the counterface was greatly restrained.

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TiAl–nHA composite coatings for sintering protection of carbon fiber and improvement of carbon fiber–hydroxyapatite composites interface

Cited by 7 publications

References 36 publications

Synthesis of Ti-Al-xNb Ternary Alloys via Laser-Engineered Net Shaping for Biomedical Application: Densification, Electrochemical and Mechanical Properties Studies

Synthesis of Ti-Al-xNb Ternary Alloys via Laser-Engineered Net Shaping for Biomedical Application: Densification, Electrochemical and Mechanical Properties Studies

Multifunctional Hydroxyapatite Composites for Orthopedic Applications: A Review

Influence of Natural Serpentine on Tribological Performance of Phosphate Bonded Solid Coatings

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