Figure 5.

Microstructural features. (a) Micropores smaller than 10 μm observed on the electrosprayed surface (45 ppi template, electrosprayed for 5 min and sintered at 1400°C). (b) Interconnected pore network on the innermost surface with pores greater than 100 μm (60 ppi template, electrosprayed for 3 min and sintered at 1400°C). (c) Lengthwise cross section showing the variation of pores from the sprayed to the inner surface. Interconnected porosity is present throughout the structure (45 ppi template, electrosprayed for 3 min and sintered at 1400°C). ESED, environmental secondary electron detector.