Recent Progress on Mg- and Zn-Based Alloys for Biodegradable Vascular Stent Applications

Figure 6

Microtube of Zn-0.05Mg-0.01Fe alloy fabricated by drilling, rolling, and drawing [44]: (a) microtube; (b) cross-section of microtube. Microstructure of Zn microtubes: drilling, (c) cross-section and (d) longitudinal section; rolling, (e) cross-section and (f) longitudinal section; drawing, (g) cross-section and (h) longitudinal section; annealing, (i) cross-section and (j) longitudinal section. Zn-based vascular stents fabricated by laser etching and electrochemical polishing: (k) Zn-based stent with diameter of 2.5 mm; (l) first crimp to diameter of 1.3 mm; (m) balloon expansion to diameter of 3.5 mm.

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