As published in the January 2021 issue of Materials Performance (MP), this article explores the required elements for stress corrosion cracking to occur. Typically, these involve a susceptible alloy, the proper chemical environment, and an enduring tensile stress.
Diligent boiler feedwater treatment, involving mechanical deaeration and chemical treatment, is the primary defense against steam condensate corrosion. This article reviews further methods, including equipment design, materials selection, venting, reducing air ingress, and selecting steam traps.
The authors studied open-cell aluminum foams with different pore densities under marine conditions, with the objective of learning more about the corrosion behavior of these materials. The resulting deeper understanding is expected to lead to expanded utilization in advanced engineering applications.
A new study by engineers at Monash University has demonstrated improvements in the fatigue life of high strength aluminum alloys by 25 times, which the researchers believe could be significant for the transport manufacturing industry.
Many bridges in coastal areas are supported by precast pilings that are either continuously or periodically exposed to harsh saltwater conditions, requiring cathodic protection. These researchers studied two decommissioned pilings from the Veterans Memorial Bridge in Florida.
Concrete beams should be resistant against the influence of corrosive agents, environmental degradation, and mechanical forces. In this article, the effect of two different concrete mixing designs is investigated against the pole’s bend strength behavior.
A team of researchers at the Massachusetts Institute of Technology and the Lawrence Berkeley National Laboratory have found that exposure to radiation can improve the resistance of certain alloys that could be used in fission or fusion reactors.
After finding high efficiency in laboratory tests, scientists are intending to apply new bio-based corrosion inhibitors—developed on the basis of sunflower oil—in harsh Arctic conditions.
Patterns of moisture trapping underneath insulation were visualized using moisture detection imaging, and a contact-free insulation system with low-point drains achieved maximum drainage efficiency (97%) and the least trapping.
The new technique developed by University of Illinois researchers can potentially be used to make microcapsules that respond to changes in pH, which are useful for applications such as anticorrosion coatings.
PHMSA is proposing to clarify that cathodic protection rectifiers can be monitored remotely and to revise the requirements for assessing atmospheric corrosion on distribution service pipelines.
To keep you updated on the coronavirus pandemic, MP is compiling this regular guide of news and interviews as it pertains to the corrosion industry and its path forward in the era of COVID-19.
The ROVs measure metal thickness, paint thickness, and cathodic protection (CP) voltage—a corrosion prevention technique the Navy uses that charges the hull at a certain voltage to slow down corrosion.
The nominating period is now open for next year’s Corrosion Innovation of the Year Awards, with winners recognized in a wide range of categories related to corrosion prevention and mitigation.
The electrochemical corrosion behavior at different current densities was studied by using the potentiodynamic polarization and electrochemical impedance spectroscopy tests in combination with scanning electron microscopy.