Toxic element-free Ti-based metallic glass ribbons with precious metal additions

Yüce, Eray; Spieckermann, Florian; Asci, Atacan; Wurster, Stefan; Ramasamy, Parthiban; Xi, Lixia; Sarac, Baran; Eckert, J.

doi:10.1016/j.mtadv.2023.100392

Cited by 1 publication

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“…[ 1–3 ] In addition, owing to their amorphous nature, Ti‐BMGs have attractive properties such as high corrosion resistance, wear resistance, lower Young's modulus, higher elasticity, and higher specific strength than traditional crystalline Ti‐alloys, making them potential biomaterials for dental and orthopedic applications. [ 2–7 ] The reduced Young's modulus and enhanced elastic behavior are expected to alleviate stress‐shielding effects when contacting bone tissues. [ 8,9 ] Indeed, many efforts have been devoted to the development of β‐type titanium alloys achieving low Young's modulus below 80 GPa for crystalline materials.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Surface Pattern on Ni‐Free Ti‐Based Bulk Metallic Glass to Control Cell Interactions

Cai,

Blanquer,

Costa

et al. 2023

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Ni‐free Ti‐based bulk metallic glasses (BMGs) are exciting materials for biomedical applications because of their outstanding biocompatibility and advantageous mechanical properties. The glassy nature of BMGs allows them to be shaped and patterned via thermoplastic forming (TPF). This work demonstrates the versatility of the TPF technique to create micro‐ and nano‐patterns and hierarchical structures on Ti40Zr10Cu34Pd14Sn2 BMG. Particularly, a hierarchical structure fabricated by a two‐step TPF process integrates 400 nm hexagonal close‐packed protrusions on 2.5 µm square protuberances while preserving the advantageous mechanical properties from the as‐cast material state. The correlations between thermal history, structure, and mechanical properties are explored. Regarding biocompatibility, Ti40Zr10Cu34Pd14Sn2 BMGs with four surface topographies (flat, micro‐patterned, nano‐patterned, and hierarchical‐structured surfaces) are investigated using Saos‐2 cell lines. Alamar Blue assay and live/dead analysis show that all tested surfaces have good cell proliferation and viability. Patterned surfaces are observed to promote the formation of longer filopodia on the edge of the cytoskeleton, leading to star‐shaped and dendritic cell morphologies compared with the flat surface. In addition to potential implant applications, TPF‐patterned Ti‐BMGs enable a high level of order and design flexibility on the surface topography, expanding the available toolbox for studying cell behavior on rigid and ordered surfaces.

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Section: Introductionmentioning

confidence: 99%