Preparation of Nanostructured Microporous Metal Foams through Flow Induced Electroless Deposition

Table 1

The properties of three samples prepared by using [Ni] = 0.13 M and sodium hypophosphite as reducing agent at concentrations [P] = 0.63 M, 1.26 M, and 2.52 M. Heat treatment was conducted with gradual heating from room temperature to 600°C at a rate of 10°C/min followed by annealing at 600°C for 60 minutes and cooling in air.

Sodium hypophosphite concentration (M)	0.63	1.26	2.52
Grain size (μm); Before heat treatment	5–10	2–11	0.5–2
Grain size (μm); After heat treatment	6–12	3–12	0.5–4
Grain surface pores (nm); After heat treatment	100–400	100–400	20–200