使用陰極電弧法在鋼材上沉積CrN已廣泛的被用於改進鋼材的抗磨耗及抗腐蝕。本研究將針對披覆CrN的鋼材在腐蝕溶液中的電化學行為作為主軸再作延伸性的探討，內容共包含了「MEVVA離子源植入鉻中間層」及「熱氧化CrN鍍膜」的效應對披覆CrN鋼材的電化學行為的影響。
針對披覆CrN的鋼材施以中間層方面，MEVVA離子源結合陰極電弧是一種新穎的表面改質方法，透過MEVVA植入鉻的表面改質對披覆CrN鋼材的腐蝕行為進行調查。對於AISI 4140鋼及Cr/steel，CrN/steel, CrN/Cr/steel的鍍膜試片於0.1N的HCl水溶液中進行腐蝕實驗。對於MEVVA植入鉻中間層以及CrN鍍膜的組成及微結構，採用XRD和TEM對其加以觀察。極化阻抗值(Rp)將被量測並與使用等效電路模擬EIS量測所得結果互相比較，以了解MEVVA植入鉻效應對於CrN/Cr/steel腐蝕機制的影響。結果指出披覆CrN鋼材的腐蝕阻抗因MEVVA植入鉻而顯著的提升。
針對熱氧化CrN鍍膜方面而言，分別將試片置於空氣氣氛下於500 oC和800 oC氧化1小時。熱氧化效應對於披覆CrN的AISI 304鋼材在水溶液中的腐蝕行為的影響將被觀察。所有試片的腐蝕阻抗為透過EIS方法所求得在0.5M H2SO4 + 1M NaCl水溶液中的極化阻抗值加以比較。結果指出披覆CrN的鋼材在經過500 oC氧化後腐蝕阻抗明顯降低，相較之下於800 oC氧化條件下，則呈現比原本未經熱氧化及500 oC氧化後更好的腐蝕阻抗。經800 oC的熱氧化之後，於CrN鍍膜上形成一層厚的氧化層將有助於提升原本披覆CrN鋼材的抗蝕能力。

Using cathodic arc plasma to deposit CrN on the steel has been explored and extensively studied to improve the wear and corrosion resistance of the steel structures. The extended research for the electrochemical behavior of CrN coated steel in aggressive solutions were investigated, and can be divided into two categories: The effects of “Metal vapor vacuum arc (MEVVA) implanted Cr interlayer” and “ thermal oxidation of CrN coatings “ on the electrochemical behavior of CrN coated steel .
In the field of the interlayer function for the CrN coated steel, MEVVA source implantation is a novel and profitable surface modification process coupled with the cathodic arc plasma. The effect of the Cr implanted by MEVVA (Cr/steel) on the corrosion behavior of CrN/steel through the surface modification has been investigated. Both AISI 4140 steel and its coated assemblies of Cr/steel, CrN/steel, and CrN/Cr/steel were evaluated in an aerated 0.1N HCl solution. The composition and structure of the MEVVA implanted chromium and the cathodic arc plasma deposited CrN on steel were examined by XRD and TEM. The polarization resistance (Rp) of all samples was measured and compared with the results obtained from electrochemical impedance spectroscopy (EIS) simulated by an equivalent circuit to interpret the effect of MEVVA implanted chromium on the corrosion mechanism of the CrN/Cr/steel. The results indicated that the corrosion resistance of the CrN coated steel was significantly enhanced by the MEVVA implanted chromium in the CrN/Cr/steel assembly.
In the field of thermal oxidation of CrN coatings, thermal oxidation in air was carried out at the temperature of 500oC and 800oC for 1 hour. The effect of the thermal oxidation on the aqueous corrosion behavior of the CrN coated AISI 304 steel assembly was investigated in this study. The corrosion resistance of all samples was compared in terms of a polarization resistance resulting from EIS in a mixture of 0.5M H2SO4 + 1M NaCl solution. The results indicated that the corrosion resistance of the CrN/304s oxidized at 500oC is significantly reduced. On the contrary, the electrochemical behavior of the CrN/304s oxidized at 800oC shows better corrosion resistance than the one oxidized at 500oC and as-deposited steel. After thermal oxidation at 800oC, the oxide layer formed on top of CrN coating enhances the corrosion protection of the CrN coated steel.

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