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8 Methods of Coating Thickness Measurement
By: David Beamish | President, DeFelsko Corporation
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Tensile Strength
Tensile strength is the ability of a material to withstand a pulling (tensile) force and refers to the breaking strength of a material when applying a force capable of breaking many strands of the material simultaneously, at a constant rate of extension/load. It is customarily measured in units of...
Ferrous Metal
A ferrous metal is any metal that is primarily composed of iron and has magnetic properties. A ferrous metal is known for its hardness, durability and tensile strength. Some common ferrous metals include:Alloy steelCarbon steelCast ironWrought ironFerrous metals are known and used for their...
Impressed Current Cathodic Protection
Impressed current cathodic protection (ICCP) is a corrosion protection system consisting of sacrificial anodes connected to an external power source. The external power source, often a DC power supply, provides the current necessary to drive the electrochemical reaction required for cathodic...
21 Types of Pipe Corrosion & Failure
Most high-corrosion scenarios result from years of problem conditions that have gone unrecognized, unaddressed, or ignored.
An In-Depth Look at Materials Selection
Materials selection involves complex procedures that an require understanding of failure susceptibilities and corrosion control methods, as well as cooperation among the different engineering disciplines.
By: Andry Soetiawan | Material and Corrosion Consultant
5 Ways to Measure the Hardness of Materials
Hardness is not defined by any one universal scale or unit of measure. Several tests are available to assess this property, with each having its own unique set of advantages and disadvantages.
By: Krystal Nanan | Civil Engineer
Does zinc rust?
The short to the question is, yes. Zinc does rust. Like all metals, zinc corrodes when exposed to air and moisture. However, this element does not rust like most other metals.Iron, for example, reacts with water and oxygen in the atmosphere to form hydrated iron (III) oxide on the surface of the...
By: Krystal Nanan | Civil Engineer
Why should cathodic protection and a coating be used together to protect against corrosion?
Applying a protective coating to metallic surfaces is the most effective method to mitigate corrosion damage. According to a National Association of Corrosion Engineers (NACE) report, more than $100 billion dollars is spent in the U.S. to control corrosion by the application of either organic or...
By: Mehdi Yari | Electrochemistry and Corrosion Laboratory at the University of Western Ontario
How can I convert the corrosion rate between the mils per year and the metric equivalent millimeter per year (mm/y), and why does this matter?
A corrosion rate conversion is a technique to change the measurement units of a given corrosion rate to another unit for comparison purposes or a specific engineering application. When converting a corrosion rate between these units you must keep in mind that a mil is a thousandth of an inch (i.e.,...
By: Osvaldo Mejia | Sr. Pipeline Integrity Engineer at Petroleum Development Oman
