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- W4385431657 abstract "Alloying and structural design provides flexibility to modulate performance of biodegradable porous implants manufactured by laser powder bed fusion (L-PBF). Herein, bulk Zn-0.8Li-0.1 Mg was first fabricated to indicate the influence of the ternary alloy system on strengthening effect. Porous scaffolds with different porosities, including 60 % (P60), 70 % (P70) and 80 % (P80), were designed and fabricated to study the influence of porosity on mechanical properties, in vitro degradation behavior, biocompatibility and osteogenic ability. Pure Zn (ZnP70) scaffolds with a porosity of 70 % were utilized for the comparison. The results showed Zn-0.8Li-0.1 Mg bulks had an ultimate tensile strength of 460.78 ± 5.79 MPa, which was >3 times that of pure Zn ones and was the highest value ever reported for Zn alloys fabricated by L-PBF. The compressive strength (CS) and elastic modulus (E) of scaffolds decreased with increasing porosities. The CS of P70 scaffolds was 24.59 MPa, >2 times that of ZnP70. The weight loss of scaffolds during in vitro immersion increased with increasing porosities. Compared with ZnP70, a lower weight loss, better biocompatibility and improved osteogenic ability were observed for P70 scaffolds. P70 scaffolds also exhibited the best biocompatibility and osteogenic ability among all the used porosities. Influence mechanism of alloying elements and structural porosities on mechanical behaviors, in vitro biodegradation behavior, biocompatibility and osteogenic ability of scaffolds were discussed using finite element analysis and the characterization of degradation products. The results indicated that the proper design of alloying and porosity made Zn-0.8Li-0.1 Mg scaffolds promising for biodegradable applications." @default.
- W4385431657 created "2023-08-01" @default.
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- W4385431657 date "2023-10-01" @default.
- W4385431657 modified "2023-10-14" @default.
- W4385431657 title "Mechanical properties, in vitro biodegradable behavior, biocompatibility and osteogenic ability of additively manufactured Zn-0.8Li-0.1Mg alloy scaffolds" @default.
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- W4385431657 doi "https://doi.org/10.1016/j.bioadv.2023.213571" @default.
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