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Crystallization kinetics of machinable glass ceramics produced from volcanic basalt rock

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dc.contributor.authors Ercenk, E; Guven, B; Yilmaz, S;
dc.date.accessioned 2020-10-16T11:05:41Z
dc.date.available 2020-10-16T11:05:41Z
dc.date.issued 2018
dc.identifier.citation Ercenk, E; Guven, B; Yilmaz, S; (2018). Crystallization kinetics of machinable glass ceramics produced from volcanic basalt rock. JOURNAL OF NON-CRYSTALLINE SOLIDS, 498, 271-262
dc.identifier.issn 0022-3093
dc.identifier.uri https://doi.org/10.1016/j.jnoncrysol.2018.06.041
dc.identifier.uri https://hdl.handle.net/20.500.12619/69722
dc.description.abstract This study investigates the utilization of basalt in manufacturing machinable glass ceramics. As the fluorine and potassium phases, MgF2 and K2O added into basalt are responsible for the machinability of glass ceramics. Three different compositions containing 80%, 85%, and 90% basalt, with K2O and MgF2 as the remainder, were mixed and melted in an alumina crucible at 1500 degrees C. Glass samples were obtained by casting the melt into a graphite mould. Glass ceramics were prepared through subsequent crystallization heat treatment of the obtained glass. Compositional and mechanical characterizations were carried out via XRD-SEM and hardness/fracture toughness and machinability tests respectively. The effect of change in the obtained phases with basalt composition on the machinability of glass ceramics was investigated. Furthermore, crystallization kinetics of the glasses were investigated by differential thermal analysis (DTA) using the Kissinger kinetic model with several different heating rates. This study reports that basalt can be utilized in the production of machinable glass ceramics only if the basalt ratio is justified. The results showed that good machining performance was observed in low-basalt content conditions (B80), When the basalt content increased (B85 and B90), the machining capability decreased markedly. Furthermore, the crystallization activation energies decreased with increase in basalt content.
dc.language English
dc.publisher ELSEVIER SCIENCE BV
dc.subject Materials Science
dc.title Crystallization kinetics of machinable glass ceramics produced from volcanic basalt rock
dc.type Article
dc.identifier.volume 498
dc.identifier.startpage 262
dc.identifier.endpage 271
dc.contributor.department Sakarya Üniversitesi/Mühendislik Fakültesi/Metalurji Ve Malzeme Mühendisliği Bölümü
dc.contributor.saüauthor Ercenk, Ediz
dc.contributor.saüauthor Ercenk, Ediz
dc.contributor.saüauthor Yılmaz, Şenol
dc.relation.journal JOURNAL OF NON-CRYSTALLINE SOLIDS
dc.identifier.wos WOS:000440389500036
dc.identifier.doi 10.1016/j.jnoncrysol.2018.06.041
dc.identifier.eissn 1873-4812
dc.contributor.author Ercenk, Ediz
dc.contributor.author Ercenk, Ediz
dc.contributor.author Bilgehan Guven
dc.contributor.author Yılmaz, Şenol


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