Fabrication and characterizations of thin film metallic glasses: Antibacterial property and durability study for medical application

Chu, Jinn P.; Liu, Tz Yah; Li, Chia Lin; Wang, Chenhao; Jang, J.S.C.; Chen, Ming Jen; Chang, Shwu Fen; Huang, Wen Chien

doi:10.1016/j.tsf.2013.08.111

Cited by 75 publications

(40 citation statements)

References 23 publications

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“…Thin films, both amorphous and crystalline films, have been extensively reported to be capable of enhancing the performance of many types of materials through coating, especially the mechanical performance of substrate materials. [41,[45][46][47] Furthermore, scaling down a material structure down to the nanoscale can cause them to exhibit different behaviors, as compared to their bulk counterparts, in which they become stronger as their size is reduced according to the Hall-Petch relationship. [23,48,49] Therefore, it is hypothesized that a thin HEA film at nanoscale may greatly enhance the mechanical performance of the composite micro/nano structure.…”

Section: Hea Filmmentioning

confidence: 99%

High‐Entropy Alloy (HEA)‐Coated Nanolattice Structures and Their Mechanical Properties

et al. 2017

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Nanolattice structure fabricated by two-photon lithography (TPL) is a coupling of size-dependent mechanical properties at micro/nano-scale with structural geometry responses in wide applications of scalable micro/nano-manufacturing. In this work, three-dimensional (3D) polymeric nanolattices are initially fabricated using TPL, then conformably coated with an 80 nm thick high-entropy alloy (HEA) thin film (CoCrFeNiAl 0.3 ) via physical vapor deposition (PVD). 3D atomic-probe tomography (APT) reveals the homogeneous element distribution in the synthesized HEA film deposited on the substrate. Mechanical properties of the obtained composite architectures are investigated via in situ scanning electron microscope (SEM) compression test, as well as finite element method (FEM) at the relevant length scales. The presented HEA-coated nanolattice encouragingly not only exhibits superior compressive specific strength of %0.032 MPa kg À1 m 3 with density well below 1000 kg m À3 , but also shows good compression ductility due to its composite nature. This concept of combining HEA with polymer lattice structures demonstrates the potential of fabricating novel architected metamaterials with tunable mechanical properties.

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Section: Hea Filmmentioning

confidence: 99%

High‐Entropy Alloy (HEA)‐Coated Nanolattice Structures and Their Mechanical Properties

et al. 2017

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“…The angle 101.8 is not far from 106.6 detected in a fully amorphous Cu 48 Zr 42 Ti 4 Al 6 at. % metallic glass thin film [53]. The decrease of the contact angle suggests that the material becomes more hydrophilic with increasing Cu content and therefore this should favour the adhesion of bacteria on the surface.…”

Section: Wettability and Antimicrobial Testsmentioning

confidence: 99%

Antimicrobial and wear performance of Cu-Zr-Al metallic glass composites

et al. 2017

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The antimicrobial and wear behaviour of metallic glass composites corresponding to the Cu 50+x (Zr 44 Al 6 ) 50-x system with x=(0, 3 and 6) has been studied. The three compositions consist of crystalline phases embedded in an amorphous matrix and they exhibit crystallinity increase with increasing Cu content, i.e., decrease of the glass-forming ability. The wear resistance also increases with the addition of Cu as indirectly assessed from H/E r and H

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“…This would be costly, impeding its practicability for real-life applications [2,9,14,15]. Alternatively, it is widely known that thin films can be used as a protective and mechanically enhancing surface coating on the substrate [16][17][18][19][20]. Therefore, incorporating HEA as a thin film material would tremendously extend the scope of its practical application.…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Mechanical and Corrosion Behaviors of CoCrFeNiAl0.3 High Entropy Alloy (HEA) Films

et al. 2017

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Abstract:The HEA-CoCrFeNiAl 0.3 thin film in this study has been successfully developed by radio frequency (RF) magnetron sputtering to meet the increasing demand in engineering applications. Its microstructure and surface profile were investigated accordingly. The as-synthesized HEA film was found to have a homogeneous element distribution and ultra-smooth surface, exhibiting a typical face-centered cubic (FCC) solid solution. The film showed better mechanical properties than its bulk counterpart, with a Young's modulus and hardness of~201.4 GPa and~11.5 GPa, respectively. Furthermore, corrosion tests demonstrated decreased sensitivity to localized corrosion in comparison to the commercial 304 stainless steel in NaCl solution.

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Fabrication and characterizations of thin film metallic glasses: Antibacterial property and durability study for medical application

Cited by 75 publications

References 23 publications

High‐Entropy Alloy (HEA)‐Coated Nanolattice Structures and Their Mechanical Properties

High‐Entropy Alloy (HEA)‐Coated Nanolattice Structures and Their Mechanical Properties

Antimicrobial and wear performance of Cu-Zr-Al metallic glass composites

Microstructure, Mechanical and Corrosion Behaviors of CoCrFeNiAl0.3 High Entropy Alloy (HEA) Films

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