Thermal expansion and compressibility of alamosite (PbSiO3) determined by in-situ synchrotron X-ray diffraction. Issue 23 (1st December 2022)

• Record Type: Journal Article
• Authors: Cunha, T.R.; Sampaio, D.V.; Pena, R.B.; Moulton, B.J.A.; Lancelotti, R.F.; Alabarse, F.G.; Rodrigues, A.D.; Pizani, P.S.
• Is Part Of: Ceramics international. Volume 48:Issue 23(2022)Part A
• Page Start: 34350
• Page End: 34354
• Publication Date: 2022-12-01
• Subjects: Lead metasilicate glass-ceramic -- Alamosite structure -- Synchrotron X-ray diffraction (SXRD) -- Rietveld refinement -- Thermal expansion coefficients -- Compressibility -- Bulk modulus -- High pressure; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.08.012
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: This manuscript presents an investigation of alamosite, PbSiO3, obtained by crystallization of lead metasilicate glass, PbO·SiO2 . Rietveld refinement of synchrotron X-ray diffraction (SXRD) measurements as a function of temperature and pressure confirmed the stable crystalline structure of PbSiO3, with a monoclinic crystal system in the P12/n1 (13) space group. The samples were heated to 973 K at ambient pressure and compressed to 6 GPa at room-temperature. Furthermore, the in situ temperature-induced lattice expansion and pressure-induced lattice compression are reported, providing the thermal expansion coefficients, compressibility and bulk modulus, important parameters determining physical properties of glass-ceramic materials. Graphical abstract: Image 1