Silica–calcium zirconate nanocomposite, studying its thermal and electrical properties

Autor:	Maryam Kargar Razi, Neda Kermani, Seyed Saeed Mirzaee, Reza Tayebee
Rok vydání:	2015
Předmět:	Materials science Nanocomposite chemistry.chemical_element Dielectric Calcium Thermal expansion Zirconate law.invention chemistry Mechanics of Materials law Thermal General Materials Science Calcination Composite material
Zdroj:	Bulletin of Materials Science. 38:673-678
ISSN:	0973-7669 0250-4707
DOI:	10.1007/s12034-015-0917-9
Popis:	Silica–calcium zirconate nanocomposite was prepared in a two-step procedure. First, nanocalcium zirconate was synthesized by the modified sol–gel method; then, silica was added to the prepared sol and the resulting product was calcined at 700–1000°C. Dilatometric measurements were performed to determine the coefficient of thermal expansion (k α ). It was concluded that k α was decreased from 15.96 × 10−6 to 10.26 × 10−6 1°C−1 with the increase in calcium zirconate/silica ratio. Moreover, studies on the dielectric properties and calcination temperature showed that the dielectric constant (e r) was increased from 3.9 to 5.7.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::597e41b8d77031734a15f4074c53844e https://doi.org/10.1007/s12034-015-0917-9 Zobrazit plný text záznamu Full text from SpringerLink