February/March_AMP_Digital

47 / 82

CASE STUDY iTSSe TSS
A D V A N C E D
M A T E R I A L S
&
P R O C E S S E S | F E B R U A R Y / M A R C H
2 0 1 7
4 7
15
iTSSe
TSS
mitigate corrosion of carbon steel in seawater, but there are
concerns regarding its suitability in CO2-containing solutions.
A 30-day test was carried out during which carbon steel speci-
mens arc-sprayedwith aluminumwere immersed in deionized
water at ambient temperature bubbled with 0.1 MPa CO2. The
acidity (pH) and potential were continuously monitored, and
the amount of dissolved Al3+ ions was measured after com-
pletion of the test. Some dissolution of TSA occurred in the
test solution leading to a nominal loss in coating thickness.
Potential measurements revealed that polarity reversal oc-
curs during the initial stages of exposure, which could lead to
preferential dissolution of carbon steel in the case of coating
damage. Thus, one needs to be careful while using TSA in CCS
environments (Fig. 5).
Fig. 5 — Experimental setup showing the arrangement of reactors.
JTST HIGHLIGHTS
Organized by:
THERMAL SPRAY CHARACTERIZATION:
MATERIALS, COATINGS AND PROCESSES
A 2 0 1 7 A
A P R I L 1 1 - 1 2 , 2 0 1 7 • C h a r l e s t o n , S o u t h C a r o l i n a
CO-LOCATED WITH AEROMAT
THE TOP AEROSPACE MATERIALS
CONFERENCE IN THE INDUSTRY
THE FUTURE OF THERMAL SPRAY CHARACTERIZATION!