658085.fig.0011a
(a)
658085.fig.0011b
(b)
Figure 11: (a) MML on the worn surface of the Al-20 wt.% fly ash composite when tested at 15 N, 1 m/s. (b) EDS spectrum of MML for the Al-20 wt.% fly ash composite when tested at 15 N, 1 m/s in region “B.”