Comparative Study on the Corro-Erosive Properties of Base Cemented Transition Metals TaC and HfC and TaX-HfX-C Coatings.

Authors :: Ortiz, C. H.
Sanchez, S. S.
Caicedo, J. C.
Aperador, W.
Sánchez-Molina, Jorge
Ruiz, J. Bautista
Source :: Metals (2075-4701); Sep2022, Vol. 12 Issue 9, p1516-N.PAG, 18p
Publication Year :: 2022
Abstract: In this research, we report on a comparative study of the corro-erosive properties of TaC and HfC individual coatings and (Ta<subscript>70</subscript>-Hf<subscript>30</subscript>-C) and (Ta<subscript>30</subscript>-Hf<subscript>70</subscript>-C) coatings. These were subjected to different impact angles of abrasive particles, corresponding with angles of 30°, 60° and 90°. It was determined that at 90°, a higher structural damage of the coatings obtained was presented. In addition, for all the systems, it was possible to conclude that the coating formed by (Ta<subscript>30</subscript>-Hf<subscript>70</subscript>-C) presented a roughness of approximately 7.11 nm, which influenced corrosive properties such as the corrosion potential and corrosion rate. Finally, it was possible to conclude that the (Ta<subscript>30</subscript>-Hf<subscript>70</subscript>-C) coating presented a higher resistance against corro-erosive environments. This was attributed to structural and mainly superficial factors, making this coating the best option to be implemented as a protective coating against highly aggressive environments in industry. [ABSTRACT FROM AUTHOR]

Subjects :: TRANSITION metals
PROTECTIVE coatings
SURFACE coatings
CORROSION potential
COMPARATIVE studies
TANTALUM

Full Text Access

Tools