| Journal: | Materials research |
| Database: | PERIÓDICA |
| System number: | 000312934 |
| ISSN: | 1516-1439 |
| Authors: | Carvalho, Carlos Eduardo Reis de1 Costa, Geraldo Magela da Cota, Andre Barros2 Rossi, Edson Hugo3 |
| Institutions: | 1Universidade Federal de Ouro Preto, Departamento de Quimica, Ouro Preto, Minas Gerais. Brasil 2Universidade Federal de Ouro Preto, Departamento de Fisica, Ouro Preto, Minas Gerais. Brasil 3Acesita Energetica Ltda, Timoteo, Minas Gerais. Brasil |
| Year: | 2006 |
| Season: | Oct-Dic |
| Volumen: | 9 |
| Number: | 4 |
| Pages: | 393-397 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Nota breve o noticia |
| Approach: | Experimental |
| English abstract | The oxidation behavior of AISI 304 and AISI 430 stainless steels was investigated from 1100 °C up to 1200 °C. Mössbauer spectroscopy and x ray diffraction were used to access the phase composition of the formed scales. The main crystalline phases found in the oxidized materials at temperatures above 1100 °C were hematite and magnetite for AISI 430 steel, and hematite and a spinel-like phase for AISI 304 steel. Hematite was found to be the dominant oxide at lower temperatures, whereas magnetite preferentially forms at higher temperatures. The activation energy for oxidation is smaller for AISI 430 steel in relation to AISI 304 steel in the range of studied temperatures, and therefore the AISI 430 steel is less resistant towards oxidation at high temperatures |
| Disciplines: | Ingeniería |
| Keyword: | Ingeniería de materiales, Ingeniería metalúrgica, Aleaciones, Acero inoxidable, Propiedades mecánicas, Resistencia, Alta temperatura, Oxidación |
| Keyword: | Engineering, Materials engineering, Metallurgical engineering, Alloys, Stainless steel, Mechanical properties, Resistance, High temperature, Oxidation |
| Full text: | Texto completo (Ver HTML) |
