Materials Selection & Design

Testing Corrosion-Resistant Alloys for Use in Geothermal Power Plants

Utilizing the energy potential in high-power geothermal wells can be expanded with materials that withstand the extreme environmental conditions.

The Humble Building Material that Shelters Millions Across the Globe

Corrugated iron has been and continues to be an invaluable building material that deserves to be taken seriously. It shows that steel can be simply and cheaply formed to a useful shape, protected from corrosion by a range of coatings, and made accessible to citizens in all corners of the globe.

Diagnostic Study of 10-inch Duplex Stainless Steel Flowline Weld Failure

This article discusses the failure investigation performed for a major operator in the Middle East on duplex stainless steel (DSS) flowline welds. The subject flowline was used intermittently since 1984 in an extreme sour service chloride-containing corrosive environment.

Water Repellency Technology Mitigates Corrosion Under Insulation Risk

The hydrophobic WR-Tech additive leads to stone wool, mandrel-wound pipe sections with significantly less water absorption relative to industry standards; faster drying rates; and durability over a wide range of potential CUI temperatures.

Neighborhood—An Influential Factor for Material Damages

This article highlights the impact of routine surrounding conditions as well as unusual neighborhood events on the integrity of process equipment and piping.

Study: Microbial Corrosion Led to California Gas Leak

An investigative report into the 2015 blowout of a natural gas well near Los Angeles, California, USA, cited corroded pipe casings, safety failures by a utility, and inadequate regulations as incident causes.

Chemistry to Tame the Power of Steam

As steam is produced in a boiler, the impurities left in the feedwater concentrate and precipitate out of the solution and onto the internal surfaces of the boiler, causing fouling. This reduces both the water flow and the heat transfer, decreasing the efficiency and power of the boiler. Such fouling can accelerate corrosion of the boiler, decreasing its life.

New Method for Repairing Damaged Concrete Bridge Girders

Researchers with the Minnesota Department of Transportation and the University of Minnesota have successfully tested a new, cost-effective method for repairing damaged bridge girders that they believe can restore them to their original shear strength or even make them stronger.

Equipment, Materials, and Corrosion in the Biodiesel Industry

The biodiesel industry requires utilizing corrosion- and degradation-resistant materials due to characteristics related to the chemical reagents and catalysts used in the production process and to those of the fuel itself.

Pitting Test in Ammonia Flue Gas Desulfurization Slurry

Ammonia flue gas desulfurization (AFGD) has many advantages, but often it cannot work to its full capacity due to corrosion. In this study, seven widely used metal materials were placed in a custom-made device containing AFGD slurry to test for pitting corrosion.

New Metal Corrosion Sensor Designed for Printed Circuit Boards

Mitsubishi Electric has developed what it believes to be the world’s first compact metal corrosion sensor small enough to be mounted on printed circuit boards. The new sensor utilizes corrosion monitoring technology to detect the degree of corrosion of metal components caused by corrosive gases in the atmosphere.

Novel Phosphonate Proves Useful in Geothermal Environments

The researchers conclude that the novel phosphonate chemistry is useful in ultrahigh geothermal applications. Its high tolerance to calcium, biodegradability, thermal stability, and good performance against calcium carbonate scaling prove valuable in many environments.

Chemical Safety Board: Thermal Fatigue Led to Gas Plant Blast

In their final report, U.S. investigators say thermal fatigue in a heat exchanger likely caused a major hydrocarbons release in June 2016. This resulted in a series of fires and explosions at the Enterprise Products gas plant in Pascagoula, Mississippi.

Internal Corrosion Protection Strategies for Aboveground Storage Tanks

In a CORROSION 2019 conference paper, the authors analyzed two case studies of corrosion-prone tanks using dissimilar metals and the challenges that arose in providing them with adequate cathodic protection (CP).

U.S. Navy Develops ‘Topside Drone’ System for Vessel Inspections

The U.S. Navy has developed a new corrosion/anomaly detection sensor payload and processing scheme, outfitted to a commercial unmanned aerial vehicle, to help inspect for material defects, corrosion, warping, and more.