In general, the coatings used in th

In general, the coatings used in this work can
improve resistance to corrosion and abrasive wear
of carbon steel substrates; however, the e%ciency
of such protection depends largely on the defects
of the microstructure of the coating, as well as
the corrosive and wear environment. Moreover,
the coatings studied are a viable alternative for
applications in the ship building industry, and
the coating should be chosen given the stress and
conditions to which the piece will be subjected.
"e conclusions drawn from the microstructural
characterization, the thermal evaluation, and
resistance to corrosion and wear of the coatings
produced are presented as follows.
With regards to the tests performed on trademark
140 MXC, 530 AS, and 560 AS coatings applied
via electric arc thermal spraying technique on
substrates used in the ship building industry; it
was found that the coating with best performance,
that is, the coating with the best combination
of properties in terms of corrosion resistance,
microhardness, abrasive wear resistance, and
thermal barrier properties was 140 MXC, followed
by 560 AS and, #nally, 530 AS. "e importance of
the substrate for corrosion testing was determined,
for it is important to use stainless steel materials
which have a passivation layer that improves the
electrochemical behavior of the system as a whole.
Regarding the properties of the coatings as thermal
insulators, more tests are required to determine the
feasibility of nanocomposite 140 MXC coatings at
temperatures below 800ºC. "e 530 and 560 AS
coatings were discarded for thermal applications.