Adhesion Strength of Cordierite Bulk Coatings on Molybdenum Substrates

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dc.contributor.authorKuhr, Thomas A.en
dc.contributor.committeechairLu, Guo-Quanen
dc.contributor.committeememberAning, Alexander O.en
dc.contributor.committeememberHendricks, Robert W.en
dc.contributor.departmentMaterials Science and Engineeringen
dc.date.accessioned2014-03-14T20:52:23Zen
dc.date.adate1997-09-15en
dc.date.available2014-03-14T20:52:23Zen
dc.date.issued1997-07-23en
dc.date.rdate1997-09-15en
dc.date.sdate1997-07-23en
dc.description.abstractCordierite was adhered to molybdenum using various metallic interlayers of copper, nickel, and chromium. The development of a coating adhesion test methodology was required to choose between interface designs. An indentation method was chosen because of ease in testing and availability of fracture mechanics interpretations of test data. The interfacial fracture toughness was determined from indentation load vs. crack length data by examining the residual stress and critical buckling load of the ceramic coatings. The interfacial fracture toughness values obtained using a slightly different indentation analysis agree with those in the literature. Quantitative chemical analysis of the interface microstructure was used to explain differences in interfacial fracture toughness values for samples with different metallic interlayer designs. The best interface design for adhering cordierite glass-ceramic coatings to molybdenum was found to be molybdenum / 2 μm copper / 4 μm chromium / cordierite.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-81297-151452en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-81297-151452/en
dc.identifier.urihttp://hdl.handle.net/10919/36979en
dc.publisherVirginia Techen
dc.relation.haspartthesis.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectinterfacial fracture toughnessen
dc.subjectadhesionen
dc.subjectceramic-metal bondsen
dc.titleAdhesion Strength of Cordierite Bulk Coatings on Molybdenum Substratesen
dc.typeThesisen
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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