Isothermal Oxidation Behaviour of 69.5Fe-14Ni-9Al-7.5Cr Alloy at High Temperatures
| Autor: | Akhmad A. Korda, Djoko Hadi Prajitno, Eddy Agus Basuki, Dedi Chandra Nababan, Fadhli Muhammad |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Article Subject Alloy Oxide Analytical chemistry 02 engineering and technology engineering.material 01 natural sciences Isothermal process Corrosion Metal chemistry.chemical_compound 0103 physical sciences lcsh:TA401-492 General Materials Science 010302 applied physics Process Chemistry and Technology Non-blocking I/O Weight change 021001 nanoscience & nanotechnology chemistry visual_art visual_art.visual_art_medium engineering lcsh:Materials of engineering and construction. Mechanics of materials 0210 nano-technology Layer (electronics) |
| Zdroj: | International Journal of Corrosion, Vol 2019 (2019) |
| ISSN: | 1687-9333 1687-9325 |
| Popis: | A series of experiments have been conducted to study the resistance of isothermal oxidation in 69.5Fe-14Ni-9Al-7.5Cr (% wt) alloys with some temperature variations of 800, 900, and 1000°C and each temperature is tested for 1, 10, 50, and 150 hours. Based on the analysis conducted on the test results, it is known that the higher the oxidation temperature, the faster the oxidation rate. As for the duration of oxidation, the longer the testing time is, the smaller the weight change per unit sample area is, indicated by a sloping graph. The oxide products found in this study were Fe2O3, Fe3O4, α-Al2O3, NiO, Cr2O3, and NiCr2O4. The rate of oxidation of this alloy at each temperature follows a logarithmic equation indicating that the oxide layer formed is very thin and can protect the metal surface well. The oxidation rate constants at temperatures of 800, 900, and 1000°C are 5.15E-05, 5.57E-05, and 6.74E-05 gr.cm−2, respectively. |
| Databáze: | OpenAIRE |
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