SECTION TITLE
COATING TECHNOLOGY
Hardide Coatings’ CVD coating reactor
CONTROLLING CORROSION E
ngineers and designers are increasingly challenged with the need to provide components and equipment operating in punishing conditions to last longer. Tese components cover a wide range of applications found in oil and gas, aerospace, flow control and renewables. Metals and alloys can be exposed to high corrosion, erosion and fatigue conditions and need to be carefully considered. According to the World Corrosion Organisation, the annual cost of corrosion is $2.2 trillion, equivalent to over 3% of the global GDP. Tis staggering figure is a global challenge affecting many industries,
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How can engineers overcome the unique set of challenges posed by various forms of corrosion?
not only from a monetary perspective, but also in asset and infrastructure protection and, most importantly, life safety. All forms of corrosion bring a unique set of challenges. In mild environments, metals may suffer from general corrosion (uniform surface attack) and still last for decades. While in severe service conditions, like sour oil and gas containing hydrogen sulphide (H2S),
the lifespan of metal components in valves, pumps and seals can be greatly reduced due to hydrogen sulphide corrosion (HSC) and other hydrogen- induced failures. MR0175 is a federally mandated standard in the United States and is globally recognised as ISO 15156. Te standard addresses the requirements and recommendations for selection and qualification of materials for H2S service in oil and gas production. Components exposed to salts, acids and carbon dioxide (CO2) can also result in aggressive corrosive attack, including metal loss and pitting. Additional factors like bacteria, temperature, humidity and so on can
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