publication . Article . 2003

BEHAVIOR OF THERMAL SPRAY COATINGS AGAINST HYDROGEN ATTACK

Vargas, Fabio; Latorre, Guillermo; Uribe, Iván;
Open Access English
  • Published: 01 Dec 2003
  • Publisher: Instituto Colombiano del Petróleo (ICP) - ECOPETROL S.A.
Abstract
The behavior of nickel and chrome alloys applied as thermal spray coatings to be used as protection against embrittlement by hydrogen is studied. Coatings were applied on a carbon steel substrate, under conditions that allow obtain different crystalline structures and porosity levels, in order to determine the effect of these variables on the hydrogen permeation kinetics and as a protection means against embrittlement caused this element. In order to establish behaviors as barriers and protection, hydrogen permeation and corrosion tests under stress were carried out, supported by measurements of the potential’s drop in the substrate-coating system under simultan...
Subjects
free text keywords: hydrogen embrittlement, thermal spry coatings, hydrogen permeation, corrosion under stress, fragilización por hidrógeno, recubrimientos termo-rociados, permeación de hidrógeno, corrosión bajo esfuerzos
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