| Journal: | Materials research |
| Database: | PERIÓDICA |
| System number: | 000312392 |
| ISSN: | 1516-1439 |
| Authors: | Monteiro, Mauricio de Jesus1 Assuncao, Fernando Rizzo Chaoliu, Zeng2 |
| Institutions: | 1Pontificia Universidade Catolica do Rio de Janeiro, Departamento de Ciencias dos Materiais e Metalurgia, Rio de Janeiro. Brasil 2Chinese Academy of Sciences, Shenyang. China |
| Year: | 1999 |
| Season: | Jul |
| Volumen: | 2 |
| Number: | 3 |
| Pages: | 181-184 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Descriptivo |
| English abstract | The oxidation of NiAl, NiAl-20at.%Fe and NiAl-30at.%Fe at 1000-1100 °C in air has been studied. Pure NiAl shows excellent oxidation resistance due to the formation of an Al2O3 layer. NiAl-20Fe also shows good oxidation resistance due to the formation of an Al2O3 scale on a b-phase substrate. Moreover, some nodules consisting of mixed oxides of Fe and Ni grow over the ductile g-phase surface incorporated to the b-phase substrate. NiAl-30Fe alloy undergoes a much faster oxidation due to the formation of a non-protective Fe and Ni-rich scale, which is extremely susceptible to spallation. The addition of Fe to NiAl is detrimental to its oxidation resistance |
| Disciplines: | Ingeniería, Química |
| Keyword: | Ingeniería metalúrgica, Ingeniería química, Química industrial, Compuestos intermetálicos, Oxidación, Resistencia |
| Keyword: | Engineering, Chemistry, Chemical engineering, Metallurgical engineering, Industrial chemistry, Chemical industry, Intermetallic compounds, Oxidation, Resistance |
| Full text: | Texto completo (Ver HTML) |
