Effect of hydroxyapatite content on the microstructure, thermal and mechanical properties of Ti-based glassy alloy/hydroxyapatite composite prepared by spark plasma sintering

Zhu, Shengli; Yang, Xianjin; Cui, Zhenduo

doi:10.1016/j.intermet.2010.12.005

Cited by 13 publications

(13 citation statements)

References 18 publications

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“…The amorphous state of the alloy is confirmed in Figure 1 as only one broad diffraction peak is observed in the as-cast state. The density was measured to be 7.08 g/cm 3 (

\pm 0.02

), which is consistent with the literature [25], and the fully-dense structure of the samples was confirmed by X-ray tomography.…”

Section: Resultssupporting

confidence: 89%

“…The crystallization temperatures measured by both XRD (450 °C) and DSC (432 °C) technics are consistent, the slight difference being explained by the different heating rates [27]. It may be proposed that the first crystalline phases are PdTi 2 , CuTi and Cu 8 Zr 3 , as shown in Table 1, which is again in agreement with expected phases found in the literature [15,16,21,25,28]. …”

Section: Resultssupporting

confidence: 83%

“…They were also identified after the full crystallization of the alloy after in situ XRD as shown previously in this study. As shown by other authors [15,16,21,25,28], these peaks can correspond to a mixture of intermetallic compounds such as CuTi, PdTi 2 and Cu 8 Zr 3 . The presence of these intermetallic compounds confirms that the final mechanical treatments of the alloys lead to a thin crystallized layer at the surface and that the observed peaks are not linked to a possible oxidation of the surface.…”

Section: Resultsmentioning

confidence: 56%

See 2 more Smart Citations

On the Potential of Bulk Metallic Glasses for Dental Implantology: Case Study on Ti40Zr10Cu36Pd14

et al. 2018

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Ti40Zr10Cu36Pd14 Bulk Metallic Glass (BMG) appears very attractive for future biomedical applications thanks to its high glass forming ability, the absence of toxic elements such as Ni, Al or Be and its good mechanical properties. For the first time, a complete and exhaustive characterization of a unique batch of this glassy alloy was performed, together with ISO standard mechanical tests on machined implant-abutment assemblies. The results were compared to the benchmark Ti-6Al-4V ELI (Extra-Low-Interstitial) to assess its potential in dental implantology. The thermal stability, corrosion and sterilization resistance, cytocompatibility and mechanical properties were measured on samples with a simple geometry, but also on implant-abutment assemblies’ prototypes. Results show that the glassy alloy exhibits a quite high thermal stability, with a temperature range of 38 °C between the glass transition and crystallization, a compressive strength of 2 GPa, a certain plastic deformation (0.7%), a hardness of 5.5 GPa and a toughness of 56 MPa.√m. Moreover, the alloy shows a relatively lower Young’s modulus (96 GPa) than the Ti-6Al-4V alloy (110–115 GPa), which is beneficial to limit bone stress shielding. The BMG shows a satisfactory cytocompatibility, a high resistance to sterilization and a good corrosion resistance (corrosion potential of −0.07 V/SCE and corrosion current density of 6.0 nA/cm2), which may ensure its use as a biomaterial. Tests on dental implants reveal a load to failure 1.5-times higher than that of Ti-6Al-4V and a comparable fatigue limit. Moreover, implants could be machined and sandblasted by methods usually conducted for titanium implants, without significant degradation of their amorphous nature. All these properties place this metallic glass among a promising class of materials for mechanically-challenging applications such as dental implants.

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“…The amorphous state of the alloy is confirmed in Figure 1 as only one broad diffraction peak is observed in the as-cast state. The density was measured to be 7.08 g/cm 3 (

\pm 0.02

), which is consistent with the literature [25], and the fully-dense structure of the samples was confirmed by X-ray tomography.…”

Section: Resultssupporting

confidence: 89%

Section: Resultssupporting

confidence: 83%

Section: Resultsmentioning

confidence: 56%

See 1 more Smart Citation

On the Potential of Bulk Metallic Glasses for Dental Implantology: Case Study on Ti40Zr10Cu36Pd14

et al. 2018

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“…The compressive strength of Ti-40Zr-10Cu-36Pd-14HA composites gradually was found to decrease because of the following facts [87]: (1) Low density formed during sintering; (2) reduction of contact areas of vitreous alloy powder during sintering, decreasing the number of sintered necks formed between the powder particles; (3) partial segregation of glass-phase alloy powders. In HA/(Ti-33 wt.…”

Section: Strengthening and Toughening Mechanisms Of Titanium Alloymentioning

confidence: 99%

Research Progress Regarding Interfacial Characteristics and the Strengthening Mechanisms of Titanium Alloy/Hydroxyapatite Composites

Jiang

Shao

et al. 2018

Materials

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Titanium alloy/Hydroxyapatite (HA) composites have become a hot research topic in biomedical materials, while there are some challenges concerning bioactivity and mechanical properties such as low interface adhesion at the interface between metal and ceramic, complex interfacial reactions, and so on. Nevertheless, composites with reinforced phases can reach special properties that meet the requirements of biomedical materials due to the strong interfacial interactions between reinforcing phases (nano-carbon, partial oxides, and so on) and Titanium alloys or HA. This review summarizes the interface properties and mechanisms of Titanium alloy/HA composites, including interfacial bonding methods, strengthening and toughening mechanisms, and performance evaluation. On this basis, the interface characteristics and mechanisms of the Titaniumalloy/HA composites with enhanced phase are prospected. The results show that the interfacial bonding methods in the Titanium alloy/HA composites include chemical reactions and mechanical effects. The strengthening and toughening mechanisms contain grain refinement strengthening, second phase strengthening, solution strengthening, cracks and pulling out mechanisms, etc. This review provides a guidline for the fabrication of biocomposites with both mechanical properties and bioactivity.

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“…The strength decreased with increase of the HA content. 86) On the other hand, the Ti-based glassy alloy/HA composites usually showed poor fracture toughness; it was difficult to perform tensile test of the composites.…”

Section: )mentioning

confidence: 99%

Recent Progress in Ti-Based Metallic Glasses for Application as Biomaterials

2013

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Ti-based bulk metallic glasses are of great interest in biomedical applications due to their high corrosion resistance, excellent mechanical properties and good biocompatibility. This article reviews recent progress in the development of Ti-based metallic glasses for the application as biomaterials. Ti-based (TiZrCuPd, TiZrCuPdSn, and TiZrCuPdNb) bulk metallic glasses without toxic and allergic elements have been developed. These glassy alloys exhibited high glass-forming ability, high strength, large plasticity, good corrosion resistance and excellent biocompatibility, which open possibilities to create Ti-based metallic glass implants. Using a spark plasma sintering process, large-size Ti-based bulk metallic glasses and the composites with hydroxyapatite, as well as porous glassy alloys having approximate Young's modulus with that of bone were developed.

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Effect of hydroxyapatite content on the microstructure, thermal and mechanical properties of Ti-based glassy alloy/hydroxyapatite composite prepared by spark plasma sintering

Cited by 13 publications

References 18 publications

On the Potential of Bulk Metallic Glasses for Dental Implantology: Case Study on Ti40Zr10Cu36Pd14

On the Potential of Bulk Metallic Glasses for Dental Implantology: Case Study on Ti40Zr10Cu36Pd14

Research Progress Regarding Interfacial Characteristics and the Strengthening Mechanisms of Titanium Alloy/Hydroxyapatite Composites

Recent Progress in Ti-Based Metallic Glasses for Application as Biomaterials

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