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題名 | 鐵基形狀記憶合金離子氮化之研究=A Study on the Ion-Nitriding of Fe-based Shape Memory Alloys |
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作 者 | 林昆明; 林新智; 陳彥伸; 廖文銘; | 書刊名 | 真空科技 |
卷期 | 16:3 2004.01[民93.01] |
頁次 | 頁33-41 |
分類號 | 440.23 |
關鍵詞 | 鐵基形狀記憶合金; 離子氮化; Fe-based shape memory alloy; Ion-nitriding; |
語文 | 中文(Chinese) |
中文摘要 | 應用真空感應熔煉法配製Fe64Mn30Si6和Fe59Mn30Si6Cr5二種合金,進行離子氮化之表面改質,以分析氮化層(化合物層與擴散層)的組成及成因,並探討溫度與氮氫比對氮比層之影響。實驗結果顯示,鐵基記憶合金之氮化層厚度遠低於一般鋼材或其他合金,原因在於Mn與N形成緻密之錳氮化物Mn4N,阻礙了N原子向內擴散所致。在相同條件下, Fe59Mn30Si6Cr5之氮化效果明顯較Fe64Mn30Si6合金為佳。此外,改變溫度及氮氫比等氮化參數可有效控制氮化層之成分與厚度。 |
英文摘要 | Both Fe64Mn30Si6 and Fe59Mn30Si6Cr5 shape memory alloys are prepared by VIM technique. The ion nitriding of the alloys is carried out to investigate the effects of temperature and H2/N2 ratio on the related properties. Experimental results show that because of the formation of the intensive Mn4N the nitrided layer of Fe-based shape memory alloys is thinner than other Fe-based alloys. Fe59Mn30Si6Cr5 is ion-nitrided more effectively than Fe64Mn30Si6 due to the presence of Cr. The thickness and composition of the nitrided layer can be controlled by changing ion-nitriding parameters. |
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