Synthesis of biocompatible TiZr-based bulk metallic glass foams for bio-implant application

Nguyen, Van Tai; Li, T.H.; Song, Shuang; Liao, Y.C.; Tsai, P.H.; Wong, Pei‐Chun; Jang, J.S.C.

doi:10.1016/j.matlet.2019.126650

Cited by 10 publications

(12 citation statements)

References 11 publications

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“…BMG scaffolds with porosities of 12.4%, 16.7%, 24.6%, 32.8%, 48.8%, 64.0%, and 72.4% were obtained by hot pressing the mixture of Al spacer particles (size ranging 75–250 μm) and TiZr-based matrix powder with various volume fractions of the spacer (10%, 15%, 20%, 25%, 35%, 45% and 50%). In our previous study [ 16 ], the scaffolds fabricated by using NaCl spacer particles just gained at the porosity of 34.8% with suitable mechanical properties in comparison to the mechanical properties of the human bones. It can be assumed that a low thermal conductivity of the NaCl spacer particles, which is approximately 10 (W/mK) at room temperature, negatively affects the interfacial bonding between amorphous alloy particles during hot pressing.…”

Section: Resultsmentioning

confidence: 99%

“…Bulk scaffolds with various porosities ranging from 2.0% to 72.4% were designed by mixing the Al spacer particles and the TiZr-based matrix powder with different volume fractions. Based on the results obtained using hot pressing in our previous studies [14][15][16], the stress, temperature, and holding time were set to 300 MPa, 520 • C (temperature within the supercooled liquid region), and 300 s, respectively. Then, the Al spacer particles were removed from the prepared scaffolds in a 2 M NaOH warm solution (approximately 70 • C).…”

Section: Alloysmentioning

confidence: 99%

“…In our previous study [16], the scaffolds fabricated by using NaCl spacer particles just gained at the porosity of 34.8% with suitable mechanical properties in comparison to the mechanical properties of the human bones. It can be assumed that a low thermal conductivity of the NaCl spacer particles, which is approximately 10 (W/mK) at room temperature, negatively affects the interfacial bonding between amorphous alloy particles during hot pressing.…”

Section: Real Porosity and Morphology Of Tizr-based Bmg Scaffoldsmentioning

confidence: 99%

“…Based on the density of the foam, the mechanical properties of a porous implant can be controlled by adjusting its relative porosity. In our previous studies [14][15][16], we have successfully estimated the Young's modulus and compressive strength of the Zr-based and TiZr-based open-cell BMG scaffolds by controlling the relative density using the Gibson and Ashby model.…”

Section: Introductionmentioning

confidence: 99%

“…The TiZr-based BMG with the nominal composition of Ti 42 Zr 35 Si 5 Ta 3 Co 12.5 Sn 2.5 (in atomic percentage) was designed in our previous studies as the pre-alloy ingots [ 16 , 17 ]. The TiZr-based BMG showed a high glass-forming ability (GFA) with glass transition (T g ) and crystallization (T x ) temperatures are approximately 758 and 853 K, respectively, together with a large supercooled liquid region

and a considerably low liquidus temperature of 1153 K (or 880 °C).…”

Section: Introductionmentioning

confidence: 99%

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Open-Cell Tizr-Based Bulk Metallic Glass Scaffolds with Excellent Biocompatibility and Suitable Mechanical Properties for Biomedical Application

Nguyen

Wong

Song

et al. 2020

JFB

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A series of biocompatible high-porosity (up to 72.4%) TiZr-based porous bulk metallic glass (BMG) scaffolds were successfully fabricated by hot pressing a mixture of toxic element-free TiZr-based BMG powder and an Al particle space holder. The morphology of the fabricated scaffolds was similar to that of human bones, with pore sizes ranging from 75 to 250 μm. X-ray diffraction patterns and transmission electron microscopy images indicated that the amorphous structure of the TiZr-based BMG scaffolds remained in the amorphous state after hot pressing. Noncytotoxicity and extracellular calcium deposition of the TiZr-based BMG scaffolds at porosities of 32.8%, 48.8%, and 64.0% were examined by using the direct contact method. The results showed that the BMG scaffolds possess high cell viability and extracellular calcium deposition with average cell survival and deposition rates of approximately 170.1% and 130.9%, respectively. In addition, the resulting TiZr-based BMG scaffolds exhibited a considerable reduction in Young’s moduli from 56.4 to 2.3 GPa, compressive strength from 979 to 19 MPa, and bending strength from 157 MPa to 49 MPa when the porosity was gradually increased from 2.0% to 72.4%. Based on the aforementioned specific characteristics, TiZr-based BMG scaffolds can be considered as potential candidates for biomedical applications in the human body.

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Section: Resultsmentioning

confidence: 99%

Section: Alloysmentioning

confidence: 99%

Section: Real Porosity and Morphology Of Tizr-based Bmg Scaffoldsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

and a considerably low liquidus temperature of 1153 K (or 880 °C).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Open-Cell Tizr-Based Bulk Metallic Glass Scaffolds with Excellent Biocompatibility and Suitable Mechanical Properties for Biomedical Application

Nguyen

Wong

Song

et al. 2020

JFB

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RETRACTED ARTICLE: Effects of Cr Microalloying on Structural Evolution, Crystallization Behavior and Micromechanical Properties of ZrCoAlCr Bulk Metallic Glass

Supriyono

Aravindhan

Thangavelu

et al. 2021

Trans Indian Inst Met

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This paper deals with the role of minor addition of Cr on the atomic rearrangement and crystallization evolution in a Zr-based bulk metallic glass. For this purpose, Cr elements with 1-4% atomic percentage were added into the alloying composition. The X-ray diffraction results indicated that the trace element led to the increase in disordered structures in the glassy alloy and the decline in population of short and medium scale orders. This event was due to the intensification of structural heterogeneity which was manifested in the change of enthalpy relaxation. The differential scanning calorimetry analysis also showed that all ZrCoAlCr BMG samples included two distinct crystallization peaks during the heating process. However, the increase in Cr content led to the intensification of low temperature peak. This result was consistent with viscosity analysis, in which the viscosity decrement was intensified at the range of low temperature crystallization peak with the rise in Cr content. Moreover, it was found that although the plasticity improved in samples with Cr-content, the strength showed a slight decrease.

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Mechanical response of mesoporous amorphous NiTi alloy to external deformations

Galimzyanov

Мокшин

2021

International Journal of Solids and Structures

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The porous titanium nickelide is very popular in various industries due to unique combination of physical and mechanical properties such as shape memory effect, high corrosion resistance, and biocompatibility. The non-equilibrium molecular dynamics simulation was applied to study the influence of porosity degree on mechanical properties of porous amorphous titanium nickelide at uniaxial tension, uniaxial compression, and uniform shear. We have found that the porous amorphous alloy is characterized by a relatively large value of Young's modulus in comparison to its crystalline analogue. It has been found that the system with a percolated network of pores exhibits improved elastic characteristics associated with resistance to tensile and shear. The system contained isolated spherical pores is more resistant to compression and less resistant to tensile and shear. These results can be applied to develop and improve the methods for making amorphous metal foams.

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Synthesis of biocompatible TiZr-based bulk metallic glass foams for bio-implant application

Cited by 10 publications

References 11 publications

Open-Cell Tizr-Based Bulk Metallic Glass Scaffolds with Excellent Biocompatibility and Suitable Mechanical Properties for Biomedical Application

Open-Cell Tizr-Based Bulk Metallic Glass Scaffolds with Excellent Biocompatibility and Suitable Mechanical Properties for Biomedical Application

RETRACTED ARTICLE: Effects of Cr Microalloying on Structural Evolution, Crystallization Behavior and Micromechanical Properties of ZrCoAlCr Bulk Metallic Glass

Mechanical response of mesoporous amorphous NiTi alloy to external deformations

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