Szczegóły publikacji
Opis bibliograficzny
The influence of chromium and lithium on manganese sulphidation kinetics / S. MROWEC, Z. GRZESIK // Journal of Physics and Chemistry of Solids ; ISSN 0022-3697. — 2001 — vol. 62 iss. 6, s. 1171–1179. — Bibliogr. s. 1179, Abstr. — Publikacja dostępna online od: 2001-04-02
Autorzy (2)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 25594 |
|---|---|
| Data dodania do BaDAP | 2006-01-19 |
| Tekst źródłowy | URL |
| DOI | 10.1016/S0022-3697(01)00009-9 |
| Rok publikacji | 2001 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Physics and Chemistry of Solids |
Abstract
Sulphidation kinetics of manganese and Mn-Cr and Mn-Li alloys has been studied as a function of temperature (973-1273 K) and sulphur activity (10(-1)-10(4) Pa) using a novel microthermogravimetric technique. It has been shown that the experimentally determined parabolic rate constants of manganese sulphidation are in excellent agreement with those calculated from the concentration and the mobility of cation vacancies in metal-deficit manganous sulphide (Mn1-yS), constituting the only reaction product (scale) on this metal. In agreement with the defect model of Mn1-yS it has been found that the sulphidation rate of Mn-Cr alloy is higher than that of pure manganese metal, the reaction rate is pressure independent and the activation energy of this process is lower. In the case of Mn-Li alloy sulphidation, on the other hand, the sulphidation rate is lower than that of Mn-sulphidation and the activation energy is higher. All these differences have been explained in terms of doping effect. (C) 2001 Elsevier Science Ltd. All rights reserved.
