FACTORIAL DESIGN BASED OPTIMISATION OF CREVICE CORROSION FOR TYPE 304 STAINLESS STEEL IN CHLORIDE SOLUTIONS

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dc.contributor.authorOGUNLEYE, O. O.
dc.contributor.authorAdeniyi, A. G.
dc.contributor.authorDurowoju, M. O.
dc.date.accessioned2020-01-15T08:18:13Z
dc.date.available2020-01-15T08:18:13Z
dc.date.issued2016-06-01
dc.description.abstractThe effects of chloride concentration, creviced scaling factor and immersion time on the percentage area and maximum depth of attack for Type 304 stainless steel (SS304) in chloride solutions were investigated. The crevice assembly comprised of coupon (SS-304), polytetrafluoroethylene (crevice former) and fasteners (titanium bolt, nut and washers). The full immersion tests were based on ASTM G-78 using full factorial design to study the effects of chloride concentration (1.5, 3.0 and 4.5 w/w%), crevice scaling factor (8, 16 and 24) and immersion time ( 15, 30 and 45 days) on the percentage area of attack (Y1) and maximum depth of attack (Y2) of SS-304. Data obtained was used to develop and optimize the models of Y1 and Y2 in terms of the three factors using Response Surface Methodology (RSM). The R2 of Y1 and Y2 were 0.98 and 0.91, respectively. The minimum Y1 (5.63%) and Y2 (3.32x10-7 mm) were obtained at 4.5% chloride concentration, 20 scaling factor and 15 days immersion time. The predicted optimal conditions agreed with the experimental results for validation with a maximum absolute relative error of 5.75%.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/3511
dc.language.isoenen_US
dc.publisherADVANCES IN MATERIALS SCIENCE (De Gruyter)en_US
dc.subjectCrevice Corrosionen_US
dc.subjectScaling factoren_US
dc.subjectStainless steelen_US
dc.subjectOptimisationen_US
dc.subjectChloride Solutionen_US
dc.titleFACTORIAL DESIGN BASED OPTIMISATION OF CREVICE CORROSION FOR TYPE 304 STAINLESS STEEL IN CHLORIDE SOLUTIONSen_US
dc.typeArticleen_US

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