Corrosion resistance of modified β-Eucryptite
dc.contributor.author | Battu, Laurent P. | en |
dc.contributor.committeechair | Brown, Jesse J. Jr. | en |
dc.contributor.committeemember | Gordon, Ronald S. | en |
dc.contributor.committeemember | Farkas, Diana | en |
dc.contributor.department | Materials Engineering | en |
dc.date.accessioned | 2014-03-14T21:42:35Z | en |
dc.date.adate | 2009-08-14 | en |
dc.date.available | 2014-03-14T21:42:35Z | en |
dc.date.issued | 1991-04-01 | en |
dc.date.rdate | 2009-08-14 | en |
dc.date.sdate | 2009-08-14 | en |
dc.description.abstract | The corrosion resistance of chemically modified β-eucryptite (Li<sub>0.41</sub>Mg<sub>0.035</sub>AlP<sub>0.52</sub>Si<sub>0.48</sub>0₄) having low expansion anisotropy and a near zero coefficient of thennal expansion was evaluated. Samples were exposed to aqueous hydrochloride acid at temperatures up to 100°C and environments containing sodium sulfate up to l000°C. The corrosion resistance was characterized by dilatometry, scanning electron microscopy, X-ray diffraction, energy dispersive x-ray analysis, weight variations, and mechanical properties variations. The results show that modified β-eucryptite is more severely corroded than commercial lithium-alumina-silicate glass-ceramics when exposed to these environments. Aqueous HCI removes AIP04 from modified β-eucryptite leaving a very porous structure. Molten salt corrodes modified β-eucryptite by penetration of sodium and sulfur which form an alkali melt under the surface. The modulus of rupture and the Young's modulus are reduced by both types of corrosion. | en |
dc.description.degree | Master of Science | en |
dc.format.extent | xi, 69 leaves | en |
dc.format.medium | BTD | en |
dc.format.mimetype | application/pdf | en |
dc.identifier.other | etd-08142009-040239 | en |
dc.identifier.sourceurl | http://scholar.lib.vt.edu/theses/available/etd-08142009-040239/ | en |
dc.identifier.uri | http://hdl.handle.net/10919/44206 | en |
dc.language.iso | en | en |
dc.publisher | Virginia Tech | en |
dc.relation.haspart | LD5655.V855_1991.B388.pdf | en |
dc.relation.isformatof | OCLC# 24344529 | en |
dc.rights | In Copyright | en |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | en |
dc.subject.lcc | LD5655.V855 1991.B388 | en |
dc.subject.lcsh | Ceramic materials | en |
dc.subject.lcsh | Corrosion resistant materials | en |
dc.subject.lcsh | Internal combustion engines -- Research | en |
dc.title | Corrosion resistance of modified β-Eucryptite | en |
dc.type | Thesis | en |
dc.type.dcmitype | Text | en |
thesis.degree.discipline | Materials Engineering | en |
thesis.degree.grantor | Virginia Polytechnic Institute and State University | en |
thesis.degree.level | masters | en |
thesis.degree.name | Master of Science | en |
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