Biomedical Applications of Shape Memory Alloys

Figure 14

Scanning electron microscope images of porous NiTi produced using three different methods: (a) self-propagating high-temperature synthesis process (porosity 65±10%, 100–360 μm) (b) capsule-free hot isostatic pressing with argon expansion (porosity 42%, 50–400 μm) (c) metal injection molding (porosity 70%, 355–500 μm). (d) Commercial porous NiTi implant (Actipore, Biorthex, Canada) for spinal fusion produced by SHS process [38].

(a)

(b)

(c)

(d)