Spontaneous ignition of low-concentration nano-sized Al-water slurry

► Spontaneous ignition of a nano-sized aluminum (Al) particles-water slurry was investigated. ► Oxidation started at a temperature as low as 303 K and ignition occurred at about 321 K. ► Ignition kinetic data E/R = 28619.66 (K) and independent of aluminum weight fractions. ► The preexponential factor k = 1.2644 × 1037 K/s and 2.398 × 10m37 K/s for 17% and 27% aluminum by weight, respectively.