The anodic surface film and hydrogen evolution on Mg
GL Song, KA Unocic - Corrosion science, 2015 - Elsevier
GL Song, KA Unocic
Corrosion science, 2015•ElsevierThis study clarifies that the inner and outer layers of the anodic film consist of a nano/micro-
porous MgO+ Mg (OH) 2 mixture. The film becomes thicker and more porous with increasing
potential. It can rupture when potential is too positive in a non-corrosive Mg (OH) 2 solution.
Hydrogen evolution becomes more intensive as polarization potential increases, particularly
when the potential at the film-covered Mg surface is close to or more positive than the
hydrogen equilibrium potential, suggesting that an “anodic hydrogen evolution”(AHE) …
porous MgO+ Mg (OH) 2 mixture. The film becomes thicker and more porous with increasing
potential. It can rupture when potential is too positive in a non-corrosive Mg (OH) 2 solution.
Hydrogen evolution becomes more intensive as polarization potential increases, particularly
when the potential at the film-covered Mg surface is close to or more positive than the
hydrogen equilibrium potential, suggesting that an “anodic hydrogen evolution”(AHE) …
Abstract
This study clarifies that the inner and outer layers of the anodic film consist of a nano/micro-porous MgO + Mg(OH)2 mixture. The film becomes thicker and more porous with increasing potential. It can rupture when potential is too positive in a non-corrosive Mg(OH)2 solution. Hydrogen evolution becomes more intensive as polarization potential increases, particularly when the potential at the film-covered Mg surface is close to or more positive than the hydrogen equilibrium potential, suggesting that an “anodic hydrogen evolution” (AHE) reaction occurs on the substrate Mg in film pores, and the significantly intensified AHE causes film rupture at high potential.
Elsevier
以上显示的是最相近的搜索结果。 查看全部搜索结果