Szczegóły publikacji
Opis bibliograficzny
Chemical diffusion and surface exchange in selected $Ln-Ba-Sr-Co-Fe$ perovskite-type oxides / K. ZHENG, A. KLIMKOWICZ, K. ŚWIERCZEK, A. Malik, Y. Ariga, T. Tominaga, A. Takasaki // Journal of Alloys and Compounds ; ISSN 0925-8388. — 2015 — vol. 645 suppl. 1, s. S357–S360. — Bibliogr. s. S359–S360, Abstr. — Alicja Klimkowicz – dod. afiliacja: Shibaura Institute of Technology, Tokyo, Japan. — MH2014 : proceedings from the 14th International symposium on Metal-Hydrogen systems: fundamentals and applications, 2014
Autorzy (7)
- AGHZheng Kun
- AGHKlimkowicz Alicja
- AGHŚwierczek Konrad
- AGHMalik Adrianna
- Ariga Y.
- Tominaga T.
- Takasaki A.
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 91380 |
|---|---|
| Data dodania do BaDAP | 2015-09-02 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.jallcom.2014.12.110 |
| Rok publikacji | 2015 |
| Typ publikacji | referat w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Alloys and Compounds |
Abstract
In this paper, a discussion on determination of chemical diffusion coefficient (D) and surface exchange reaction coefficient (K) was given on a basis of electrical conductivity and mass relaxation experiments, performed for selected Ln-Ba-Sr-Co-Fe perovskite-type oxides. The synthesized materials were analyzed in terms of their basic physicochemical properties (crystal structure, oxygen nonstoichiometry, electrical conductivity). Gathered relaxation-type data were critically analyzed, and a strong effect of the enthalpy of the oxidation process, as well as an influence of the porosity were observed, showing limitations of applicability of these techniques, especially for simultaneous determination of D and K. An additional discussion and results were also given regarding possibility of using X-ray diffraction data, recorded during change of the oxygen partial pressure at elevated temperatures, for evaluation of the considered transport coefficients. (C) 2014 Elsevier B.V. All rights reserved.
