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題名 | 鋁鎂合金表面披覆環氧樹脂/奈米碳管複合塗層之耐磨耗腐蝕性質=Electrochemical Study on the Wear-corrosion Properties of Al-Mg Alloy with Epoxy/ Carbon Nano-tube Composite Coating |
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作者 | 李正國; 黃俊彥; 黃凱平; 譚安宏; 李源發; | 書刊名 | 防蝕工程 |
卷期 | 22:1 2008.03[民97.03] |
頁次 | 頁67-72 |
分類號 | 440.39 |
關鍵詞 | 多壁奈米碳管; 5083鋁鎂合金; 磨耗腐蝕; 摩擦係數; Epoxy/ carbon nano-tube composite coating; Multiple-wall carbon nano-tube; 5083 Al-Mg alloy; Wear-corrosion resistance; |
語文 | 中文(Chinese) |
中文摘要 | 本研究嘗試添加奈米碳管粉末於環氧樹脂中,以增加樹脂的導電性、耐腐蝕與磨耗腐蝕性。將此複合塗層塗佈於5083鋁鎂合金基材,以塊對環(Block-on-ring)表面摩擦方式在3.5wt% NaCl水溶液中施加負荷100 g、轉速100 rpm、磨耗60分鐘。並在0.5M H₂SO₄+2 ppm NaF腐蝕環境下以電化學極化量測評估其耐腐蝕行為。實驗結果顯示環氧樹脂/多壁奈米碳管複合塗層有優越的耐腐蝕性,在奈米碳管達8%時電阻率可減低至9.96×10⁻² Ω‧cm,相對於5083鋁鎂合金具有優異的腐蝕與磨耗腐蝕保護性行為(腐蝕電流密度只有0.746 µA‧cm⁻²),並且隨著奈米碳管的增加而減少了磨耗損失,在奈米碳管達16%時摩擦係數(µ)僅有0.052左右,比類鑽薄膜之摩擦係數(大約0.1)還要低。 |
英文摘要 | The purpose of the present study is to evaluate the effect of epoxy/carbon nano-tube composite coating adding with different concentrations (4~20%) of multiple-wall carbon nano-tube on the electrical conductivity, corrosion and wear-corrosion properties of 5083 Al-Mg alloy. The wear-corrosion test was performed in 3.5wt.% NaCl solution by a block-on ring friction manner, with applied normal load of 100 g and wear rotation speed of 100 rpm. The wear-corrosion testing time was 60 min. Electrochemical potentiodynamic polarization was conducted in solution of 0.5M H2SO4+2ppm NaF to evaluate the corrosion behavior of specimens. The experimental results indicated that epoxy/carbon nano-tube (CNT) has an excellent corrosion resistance behavior with high corrosion potential and low corrosion current density (0.746μA•cm^(-2)). The epoxy/carbon nano-tube composite coating also showed an excellent wear-corrosion resistance, and the wear loss decreased with increasing concentration of CNT. When the concentration of CNT reached to 16% the friction coefficient (μ) of epoxy/carbon nano-tube composite coating was reduced to about 0.052, which was lower than that of diamond-like carbon (DLC) film (about 0.1). |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。