| Full text | |
| Author(s): |
Sampaio, V, David
;
Pena, Rafaella B.
[1]
;
Moulton, Benjamin J. A.
[1]
;
Rezende, V, Marcos
;
Silva, Deyvid do C.
[2]
;
Silva, Ronaldo S.
[2]
;
da Cunha, Thiago R.
[1]
;
Mastelaro, Valmor R.
[3]
;
Zanotto, Edgar D.
[4]
;
Pizani, Paulo S.
[1]
Total Authors: 10
|
| Affiliation: | [1] Sampaio, David, V, Univ Fed Sao Carlos, Dept Fis, Caixa Postal 676, BR-13565905 Sao Carlos, SP - Brazil
[2] Rezende, Marcos, V, Univ Fed Sergipe, Dept Fis, Grp Nanomat Funcionais, BR-49100000 Sao Cristovao, SE - Brazil
[3] Univ Sao Paulo, Inst Fis Sao Carlos, BR-565905 Sao Carlos, SP - Brazil
[4] Univ Fed Sao Carlos, Dept Engn Mat, Caixa Postal 676, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | CERAMICS INTERNATIONAL; v. 48, n. 1, p. 173-178, JAN 1 2022. |
| Web of Science Citations: | 0 |
| Abstract | |
In this article the doping of chromium in a lead metasilicate glass is explored using Raman, UV-Vis, and Cr Kedge XANES spectroscopy. Our results indicate that the Cr ions are predominantly present as CrO42- complexes, with a minor amounts of Cr(III). The solubility of Cr is limited to similar to 1 mol % Cr2O3. This boundary was inferred from the intensity changes to the CrO42- stretching vibrations and confirmed by the inability to produce a homogeneous glass containing 2 mol % Cr2O3. The establishment of the solubility limit of Cr in lead glasses is important to design more effective glass compositions depending on the desired application. Finally, this low solubility indicates that Cr2O3 could be used as a potential nucleating agent for lead-silica based glass-ceramics. (AU) | |
| FAPESP's process: | 16/18567-5 - Nuclei entrapment: the pre-nucleation structural ordering of homogeneous nucleating BaO-2SiO2 and CaO-SiO2 glasses |
| Grantee: | Benjamin John Albert Moulton |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 16/15962-0 - Correlation between materials structure and dynamic and optical properties of (Ax, A'1-x)O + SiO2 (A, A' = Pb, Ni, Co, Fe, Cr) series: Raman scattering and molecular dynamics simulations |
| Grantee: | David Vieira Sampaio |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 17/11868-2 - Correlation between structure and optical properties of (Äx, A'1-x)O + SiO2(A,A'= Pb,Ni,Co,Cr) glass ceramic serie under high hydrostatic pressure |
| Grantee: | Rafaella Bartz Pena |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass |
| Grantee: | Edgar Dutra Zanotto |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |
| FAPESP's process: | 19/12383-8 - Study of structural and vibrational properties of glass and glass-ceramic materials via Raman scattering as a function of temperature and high hydrostatic pressures. |
| Grantee: | Thiago Rodrigues da Cunha |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |