In general a distinction is drawn between general or uniform corrosion
and localized corrosion like pitting and crevice corrosion.
A possible explanation for this could be the higher amount of pitting in the UC-Mg couple compared to more uniform corrosion
in the IA-Mg couple.
Keywords: acoustic emission, uniform corrosion
, localized corrosion, stress corrosion cracking, principal component analysis
Low concentration of zirconyl nitrate leads to improve barrier properties and uniform corrosion
As for prediction models, in the following study only models for uniform corrosion
, that is a kind of general corrosion that proceeds at the same rate onto the metal surface, will be considered.
The uniform corrosion
rate is determined as follows:
IN corrosive environments such those typical for oil and gas applications, a specific level of corrosion resistance against both highly localised and uniform corrosion
A practical engineering way to account for a uniform corrosion
process is to use a power law to model the loss of wall thickness with the time of exposure.
Metals susceptible to uniform corrosion
tend to not have pitting.
The SMAT sample exhibits a uniform corrosion
with a larger corrosion rate compared with the coarse-grained sample, which is due to the high activity of surface atoms in the SMAT layer.
for titanium implants can be determined from weight loss data (increase or decrease in weight depending upon the environment and by products in accordance to ASTM G1 & G31), dimensional changes (shape, size, appearance and texture) and electrochemical methods (anodic and cathodic polarization, cyclic voltammetry and electrochemical impedance measurements).
is evenly distributed across the surface with the rate of corrosion being the same over the entire surface (FIGURE 2).