607429.fig.001a
(a)
607429.fig.001b
(b)
607429.fig.001c
(c)
607429.fig.001d
(d)
Figure 1: SEM micrographs of cell wall materials for Al-foams processed either with (a) CaCO3 or with (b)–(d) TiH2 and performed (a)–(c) with and (d) without Ca additive and performed with different parent alloys: (a) Al-7Si (F5), (b) Al-1Mg-0.6Si (F7), (c) Al-5Mg (F9), and (d) Al-Zn-Mg (F12).