XPS and GDOES Characterization of Porous Coating Enriched with Copper and Calcium Obtained on Tantalum via Plasma Electrolytic Oxidation

Figure 5

GDOES signals (S) of (a) phosphorus, (b) copper, (b) oxygen, (d) nitrogen, (e) tantalum, (f) calcium, and (g) hydrogen (blue lines) and their derivatives (D) (red lines) as well as (h) a GDOES crater’s portion of coating formed on tantalum. (Cf. comment of Figure 3, smoothing with equaling spacing will allow “removing” the noise at the beginning.)

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)