Improvement of Oxidation Resistance of an Fe–Mn–Si–Cr Shape Memory Alloy by Annealing under Vacuum
| Autor: | Maruyama Tadakatsu, Shigeru Suzuki, Hiroshi Kubo, Yoshio Waseda, Hiroyuki Fukai, Shuji Hanada, Naoya Masahashi |
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| Rok vydání: | 2005 |
| Předmět: |
Materials science
Annealing (metallurgy) Mechanical Engineering Alloy Analytical chemistry chemistry.chemical_element Shape-memory alloy Electron microprobe engineering.material Condensed Matter Physics Secondary ion mass spectrometry Chromium X-ray photoelectron spectroscopy chemistry Mechanics of Materials engineering General Materials Science Surface layer |
| Zdroj: | MATERIALS TRANSACTIONS. 46:1745-1748 |
| ISSN: | 1347-5320 1345-9678 |
| DOI: | 10.2320/matertrans.46.1745 |
| Popis: | Electron microprobe microanalysis (EPMA), secondary ion mass spectrometry (SIMS) and X-ray photoelectron spectroscopy (XPS) were used for charactering the surface composition of an Fe–Mn–Si–Cr shape memory alloy. The effect of annealing under vacuum on the surface composition of the alloy was studied. It was found that the amount of manganese decreased, while the amount of chromium increased in a surface layer by annealing. The thickness of the surface layer is of the order of ten micrometers, which is comparable to that obtained by conventional plating or coating. As a result, the surface of the Fe–Mn–Si shape memory alloy annealed under a vacuum exhibited better oxidation resistant than that of the as-lapped alloy. |
| Databáze: | OpenAIRE |
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