High hardness in the biocompatible intermetallic compound β-Ti
            <sub>3</sub>
            Au

Svanidze, Eteri; Besara, Tiglet; Ozaydin, M. Fevzi; Tiwary, Chandra Sekhar; Wang, Jiakui K.; Radhakrishnan, Shankar; Mani, Sendurai A.; Xin, Yan; Han, Ke; Liang, Hong; Siegrist, T.; Ajayan, Pulickel M.; Morosan, Emilia

doi:10.1126/sciadv.1600319

Cited by 54 publications

(39 citation statements)

References 58 publications

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“…[2] The current uses of hard borides have been largely limited to machining, [332] but the high wear resistance afforded by borides may lead to other applications, such as prosthetics. [333] Applying a hard coating to mating surfaces will extend the lifetime of a prosthetic joint, reducing the need for further surgery, thus avoiding additional complications. Fortunately, the majority of borides are known to be hard ( Table 4) and protective films of borides can be prepared via straightforward methods.…”

Section: Hard and Superhard Materialsmentioning

confidence: 99%

Rediscovering the Crystal Chemistry of Borides

2017

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For decades, borides have been primarily studied as crystallographic oddities. With such a wide variety of structures (a quick survey of the Inorganic Crystal Structure Database counts 1253 entries for binary boron compounds!), it is surprising that the applications of borides have been quite limited despite a great deal of fundamental research. If anything, the rich crystal chemistry found in borides could well provide the right tool for almost any application. The interplay between metals and the boron results in even more varied material's properties, many of which can be tuned via chemistry. Thus, the aim of this review is to reintroduce to the scientific community the developments in boride crystal chemistry over the past 60 years. We tie structures to material properties, and furthermore, elaborate on convenient synthetic routes toward preparing borides.

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Section: Hard and Superhard Materialsmentioning

confidence: 99%

Rediscovering the Crystal Chemistry of Borides

2017

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“…Obviously, a physical understanding of the hardening mechanisms of solid solutions is critical for the development of novel wear-resistant materials. Although solid-solution hardening in metals has been extensively studied1234, we are currently far from achieving a quantitative understanding of the hardening behavior of solid solutions.…”

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confidence: 99%

Hardness of cubic solid solutions

Gao

2017

Sci Rep

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We demonstrate that a hardening rule exists in cubic solid solutions with various combinations of ionic, covalent and metallic bonding. It is revealed that the hardening stress ∆τFcg is determined by three factors: shear modulus G, the volume fraction of solute atoms fv, and the size misfit degree δb. A simple hardening correlation in KCl-KBr solid-solution is proposed as ∆τFcg = 0.27 G. It is applied to calculate the hardening behavior of the Ag-Au, KCl-KBr, InP-GaP, TiN-TiC, HfN-HfC, TiC-NbC and ZrC-NbC solid-solution systems. The composition dependence of hardness is elucidated quantitatively. The BN-BP solid-solution system is quantitatively predicted. We find a hardening plateau region around the x = 0.55–0.85 in BNxP1−x, where BNxP1−x solid solutions are far harder than cubic BN. Because the prediction is quantitative, it sets the stage for a broad range of applications.

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“…For example, AuNPs have been chemically attached to dental implants made of titanium . Similarly, biocompatible titanium‐gold alloy with improved hardness has been recently proposed as a substitute material for implants . It is thus foreseeable for implanted medical devices to be coated with a thin layer of gold film and then afterwards laser treated at the onset of biofilm formation.…”

Section: Discussionmentioning

confidence: 99%

Structural damage of Bacillus subtilis biofilms using pulsed laser interaction with gold thin films

et al. 2016

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There is a huge interest in developing strategies to effectively eliminate biofilms due to their negative impact in both industrial and clinical settings. In this study, structural damage was induced on two day-old B. subtilis biofilms using the interaction of 532 nm pulsed laser with gold thin films. Radiant exposure of 225 mJ/cm induced distinct changes on the surface structure and overall morphology of the matured biofilms after laser irradiation. Moreover, at the radiant exposure used, changes in the colour and viscosity of the biofilm were observed which may indicate a compromised extracellular matrix. Irradiated biofilms in the presence of gold film also showed strong propidium iodide signal which implies an increase in the number of dead bacterial cells after laser treatment. Thus, this laser-based technique is a promising approach in targeting and eradicating matured biofilms attached on surfaces such as medical implants.

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High hardness in the biocompatible intermetallic compound β-Ti ₃ Au

Abstract: A remarkable fourfold increase in hardness of titanium is achieved by the addition of gold, yielding a novel biocompatible material.

Cited by 54 publications

References 58 publications

Rediscovering the Crystal Chemistry of Borides

Rediscovering the Crystal Chemistry of Borides

Hardness of cubic solid solutions

Structural damage of Bacillus subtilis biofilms using pulsed laser interaction with gold thin films

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High hardness in the biocompatible intermetallic compound β-Ti 3 Au

Abstract: A remarkable fourfold increase in hardness of titanium is achieved by the addition of gold, yielding a novel biocompatible material.

Cited by 54 publications

References 58 publications

Rediscovering the Crystal Chemistry of Borides

Rediscovering the Crystal Chemistry of Borides

Hardness of cubic solid solutions

Structural damage of Bacillus subtilis biofilms using pulsed laser interaction with gold thin films

Contact Info

Product

Resources

About

High hardness in the biocompatible intermetallic compound β-Ti ₃ Au