Figure 11

EDX elemental imaging at the ball scar of UNCD(0%H2) in vacuum: (a), (b) C-K edge, (c) O-K edge, (d) Al-K edge, (e) superimposed imag of all the elements, (f) backscattered image of ball scar where selected square area shows imaging region and (g, h and i) EDX spectra from red, blue and gray region, respectively, located in an inset as pie chart of figure (a).