Sintering, Crystallization and Properties of 2(Mg1−xMnx)O·2Al2O3·5SiO2 Ceramics Научная публикация
| Журнал |
Ceramics International
ISSN: 0272-8842 |
||
|---|---|---|---|
| Вых. Данные | Год: 2019, Том: 45, Номер: 5, Страницы: 5203-5209 Страниц : 7 DOI: 10.1016/j.ceramint.2018.11.215 | ||
| Ключевые слова | Mn-substituted cordierites; Sintering; Crystallization behavior; Technical properties | ||
| Авторы |
|
||
| Организации |
|
Информация о финансировании (1)
| 1 | Федеральное агентство научных организаций России | 0303-2016-0004 |
Реферат:
Mn-substituted cordierites, 2(Mg1−xMnx)O·2Al2O3·5SiO2 (x = 0–1), were prepared from natural components (talc, clay, alumina) and MnO2. Sintering behavior, phase transformation, and microstructural features of the samples were investigated using X-ray diffraction (XRD), differential thermal analysis (DTA), dilatometric measurements and scanning electron microscopy (SEM) with energy dispersive analysis (EDS). The results of DTA and XRD analysis indicate that MnO2 is successively reduced to Mn2O3 and MnO in the sintering process. Mn2+ ions incorporate into the crystal structure of α-cordierite substituting Mg2+ ions in octahedral sites and thus increasing the cordierite unit cell volume. Mn promotes the sintering process: the crystallization temperature, melting point, density and open porosity of Mn-substituted cordierites lowered, whereas the shrinkage and medium pore diameter enlarged with an increase in MnO2 content in the mixture of raw materials. Surface enrichment with Mn with the formation of manganese oxide crystallites was found for the samples with high substitution degree.
Библиографическая ссылка:
Sutormina E.F.
, Isupova L.A.
, Molina I.Y.
, Rudina N.A.
Sintering, Crystallization and Properties of 2(Mg1−xMnx)O·2Al2O3·5SiO2 Ceramics
Ceramics International. 2019. V.45. N5. P.5203-5209. DOI: 10.1016/j.ceramint.2018.11.215 WOS Scopus РИНЦ OpenAlex CAPlus
Sintering, Crystallization and Properties of 2(Mg1−xMnx)O·2Al2O3·5SiO2 Ceramics
Ceramics International. 2019. V.45. N5. P.5203-5209. DOI: 10.1016/j.ceramint.2018.11.215 WOS Scopus РИНЦ OpenAlex CAPlus
Даты:
| Поступила в редакцию: | 30 июл. 2018 г. |
| Принята к публикации: | 26 нояб. 2018 г. |
| Опубликована online: | 28 нояб. 2018 г. |
| Опубликована в печати: | 1 апр. 2019 г. |
Идентификаторы БД:
| ≡ Web of science: | WOS:000459365500004 |
| ≡ Scopus: | 2-s2.0-85057474802 |
| ≡ РИНЦ: | 38637625 |
| ≡ OpenAlex: | W2902613835 |
| ≡ Chemical Abstracts: | 2018:2377948 |