internal oxidation

internal oxidation

[in′tərn·əl ‚äk·sə′dā·shən]
(metallurgy)
The subsurface oxidation of components of an alloy due to oxygen diffusion into the metal.
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These CMCs undergo internal oxidation at elevated temperatures, however this internal oxidation is split into two regimes - a lower temperature 'pesting' regime and a high temperature 'self-healing' regime.
Applesthey contain quercetin, which prevents internal oxidation of LDL cholesterol or bad cholesterol
The iron content provides resistance to internal oxidation.
"This is the first study showing that air pollutants promote the development of dysfunctional, pro-oxidative HDL cholesterol and the activation of an internal oxidation pathway, which may be one of the mechanisms in how air pollution can exacerbate clogged arteries that lead to heart disease and stroke," said senior author Dr.
In the meantime, internal oxidation of the BC occurred during oxidation, due to oxygen infiltration through the porosities of the bond coat and microcracks of the TGO layer into the BC [12].
When the oxygen potential increases, this oxide tends to form under the steel surface, i.e., transforms to internal oxidation, because of its strongest affinity for oxygen.
All of the available AFA compositions exhibit a transition from protective alumina layer formation to internal oxidation of aluminum if the oxidation temperature is raised too high.
A possible cause for this behavior is embrittlement due to internal oxidation, arising from the heat treatment.
The study's real benefit, Roberts says, was to establish that isoprostanes are stable, highly quantifiable markers of internal oxidation that can be tested outside the body.
This is important, as the nature of the oxides formed during these treatments can be external oxide scales along with significant internal oxidation. With the electrical steel strip thickness, approximately 0.5mm, compositional changes to the surface impact the underlying microstructure, while the nature of the oxide formed on the surface affects how easily it is removed and the adhesion of the glassy insulation layer.
The standard ductile iron manifold was distorted, which leads to exhaust gas leakage, and displayed heavy internal oxidation scale, which could damage the turbo unit.
Conversely, when the temperature falls below this equilibrium, oxygen is made available in the melt, and internal oxidation of silicon in solution occurs.