Thermal spray

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Crevice Corrosion in a Subsea System — Aspect Before Analysis

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Micrography, as polished, of the transverse section of the forged pin with the layer applied by a (thermal) spray and fuse process. The structure of the layer that is 0.7 mm thick, presented entrapped pores and globular oxides. The layer was melted after application by thermal spray (in this case using a flame) and the pin was quenched and tempered after the full application and melting of the layer.
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ML00109 / Jan.2018
Thermal Spray and Fuse Layer in Forged Pin
M - Low Alloy Medium Carbon QTP - Tubular ForgingAp - O&G Well DrillingCd - Thermal spray
Cm - As polished micrographyDf - Transverse Section