Alkali/steam corrosion resistance of commercial SiC products coated with sol-gel deposited Mg-doped Al₂TiO₅ and CMZP

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dc.contributor.authorKang, Minen
dc.contributor.committeechairBrown, Jesse J. Jr.en
dc.contributor.committeememberHirschfeld, Deidre A.en
dc.contributor.committeememberReynolds, William T. Jr.en
dc.contributor.departmentMaterials Science and Engineeringen
dc.date.accessioned2014-03-14T21:33:29Zen
dc.date.adate2009-04-08en
dc.date.available2014-03-14T21:33:29Zen
dc.date.issued1994-05-05en
dc.date.rdate2009-04-08en
dc.date.sdate2009-04-08en
dc.description.abstractThe corrosion resistance of two commercially available SiC filter materials coated with Mg-doped Al₂ TiO₅ and (Ca <sub>0.6</sub>.6' Mg<sub>0.52</sub>) Zr₄P₆O₂₄ (CMZP) was investigated in high-temperature high pressure (HTHP) alkali-steam environments. Coated specimen properties, including cold and hot compressive strengths, bulk density, apparent porosity, permeability, and weight change, detected after exposure to 92% air-S% steam 10 ppm Na at 8OO°C and 1.8 MPs for 500 h were compared with those of uncoated specimens. Procedures for applying homogeneous coatings of Mg-doped Al₂ TiO₅ and CMZP to porous SiC filters were established and coating of the materials was successfully accomplished. Efforts to stabilize the Al₂ TiO₅ coating composition at elevated temperature were successful. Coatings show promise for providing improved corrosion resistance of the materials in pressurized fluidized bed combustion (PFBC) environments as evidenced by higher compressive strengths exhibited by coated SiC specimens than by uncoated SiC specimens following HTHP alkali-steam exposure.en
dc.description.degreeMaster of Scienceen
dc.format.extentvi, 55 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-04082009-041438en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-04082009-041438/en
dc.identifier.urihttp://hdl.handle.net/10919/42006en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1994.K364.pdfen
dc.relation.isformatofOCLC# 31049802en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1994.K364en
dc.subject.lcshAluminum titanateen
dc.subject.lcshCeramic materialsen
dc.subject.lcshColloidsen
dc.subject.lcshCorrosion resistant materialsen
dc.subject.lcshSilicon carbide -- Corrosionen
dc.titleAlkali/steam corrosion resistance of commercial SiC products coated with sol-gel deposited Mg-doped Al₂TiO₅ and CMZPen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineMaterials Science and Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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