Szczegóły publikacji
Opis bibliograficzny
Structure and electrical properties of $Mn-Cu-O$ spinels / M. BOBRUK, K. Durczak, J. DĄBEK, T. BRYLEWSKI // Journal of Materials Engineering and Performance ; ISSN 1059-9495. — 2017 — vol. 26 iss. 4, s. 1598–1604. — Bibliogr. s. 1604. — Publikacja dostępna online od: 2017-03-13
Autorzy (4)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 105210 |
|---|---|
| Data dodania do BaDAP | 2017-05-23 |
| Tekst źródłowy | URL |
| DOI | 10.1007/s11665-017-2588-8 |
| Rok publikacji | 2017 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Journal of Materials Engineering and Performance |
Abstract
The study presents the results of structural and electrical conductivity investigations of a Cu1.3Mn1.7O4 spinel obtained using EDTA gel processes. An amorphous gel was synthesized and calcinated for 5 h in air at temperatures of 673, 773, 873, and 973 K. When calcinating the gel at temperatures below 973 K, the obtained powders consisted of two phases—the regular Cu1.5Mn1.5O4 spinel and manganese(III) oxide. At 973 K, Mn2O3 was no longer observed, but a new Mn3O4 phase appeared in addition to the Cu1.5Mn1.5O4 spinel. Green bodies prepared from these powders were sintered for 2 h in air at 1393 K. The obtained sinters had a porosity of around 12% and were composed predominantly of the spinel phase, with minor amounts of Mn3O4 and, in the case of three of four sinters—CuO. Electrical conductivity measurements were taken over the temperature range of 300-1073 K. A change in the character of conductivity of the studied sinters was observed in the range of 400-430 K, and it was associated with an increase in activation energy from 0.20 to 0.56 eV. The electrical conductivity of the studied sinters ranged from 74.8 to 88.4 S cm−1, which makes the Cu1.3Mn1.7O4 material suitable for application as a protective-conducting coating in IT-SOFC ferritic stainless steel interconnects. © 2017, The Author(s).
