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In-Situ Erosion-Corrosion Testing Equipment for Geothermal Environment and Comparative Results for T

Picture for In-Situ Erosion-Corrosion Testing Equipment for Geothermal Environment and Comparative Results for T
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Material used in geothermal power plant components can experience damage during direct contact to geothermal steam. This applies specifically to turbines components as they can be prone to erosion and erosion-corrosion due to droplet formation and corrosive species present in the steam. Development of coating material as protection against such damage is being investigated. To test such effects on coatings a device was developed for in-situ testing in geothermal fluid. This device is capable of creating an erosive environment from geothermal fluid through pressure drop created by an orifice. The corrosive species present in the fluid then subsequently lead to the creation of an erosive-corrosive environment. This paper describes the development of the test setup and its potential for creating an adequate environment to test erosion-corrosion experienced by geothermal turbine components. The final setup allows for simultaneous testing of six samples. The variance between the locations of the sample holders in the device was analysed to determine its effect on results for the tested coated samples. This device was used to test different types of coatings among which electric arc sprayed titanium coatings were tested. They were located in different sample holders and their results compared in light of the differences between the environments present in the holders.

Product Number: 51319-13457-SG
Author: Helen Haraldsdottir
Publication Date: 2019
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$20.00
$20.00
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