Corrosion resistance ranking

  • 11-May-2017 10:19 EDT
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Federal-Mogul Powertrain’s (Southfield, MI) new process for ranking the corrosion resistance of diesel cylinder liner materials will enable the company to supply even more durable components for the most challenging applications. By enabling direct comparison of different materials and coating processes, the new test methodology allows material development to be specifically targeted at circumstances involving poor-quality fuel and high levels of exhaust gas recirculation. According to the company, prior to this work there was no recognized procedure for comparing the likely corrosion resistance of different materials during engine operation; the complex relationship between mechanical wear and corrosion means that each must be evaluated independently to identify the most resistant materials. Federal-Mogul Powertrain has accurately reproduced the corrosive solutions of combustion products formed inside an engine—including sulphuric, nitric and acetic acids—and used them to carry out a range of tests. Results of this program will guide future material selections for diesel engine manufacturers.

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