HVOF coating case study for power plant process control ball valve application

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EditorSearch for: Lima, R. S.; Search for: Agarwal, A.; Search for: Hyland, M. M.; Search for: Lau, Y.-C.; Search for: Li, C.-J.; Search for: McDonald, A.; Search for: Toma, F.-L.
Proceedings titleThermal Spray 2012 : Proceedings from the International Spray Conference
ConferenceInternational Thermal Spray 2012 Conference and Exposition (ITSC 2012), 21-24 May 2012, Houston, Texas, USA
Pages172177; # of pages: 6
AbstractThis case study is the result of an investigation on HVOF Cr3C2-NiCr coating failure of on-off metal seated ball valve (MSBV) used in supercritical steam lines in a power plant and solution. HVOF Cr3C2-NiCr coating is used to protect thousands of MSBVs without incident. However, in this case the valves are challenged with exposure to rapid high pressure and temperature variation resulting in a unique situation where the coating experiences cracking and cohesive failure. A detailed investigation was undertaken by Velan, Kennametal Stellite, the National Research Council of Canada and the Ecole Polytechnique to determine possible failure cause and develop solutions in which highlights are presented.
Publication date
AffiliationNational Research Council Canada; Automotive
Peer reviewedYes
NRC number139273
NPARC number21047058
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Record identifier70b6125e-0493-4d00-a14d-800e068ca8df
Record created2012-11-28
Record modified2016-05-09
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