对镀镍钴钢带进行不同温度的热处理，热处理温度为550℃、650℃、750℃，保温时间3h。采用电化学方法测试了不同热处理温度下镀镍钻钢带在1．0％NaCl和0．1％Hzs04混合溶液及10％NaOH溶液中的耐腐蚀性能，并通过扫描电子显微镜（SEM）、能谱分析仪（EDS）和x射线衍射仪（XRD）分析了镀镍钴钢带在不同热处理温度下的微观形貌、成分及织构变化。结果表明，随着热处理温度的升高，镀镍钴钢带表面镀层的晶粒尺寸逐渐长大，镀层和基底间形成了镍／钴／铁扩散层；当热处理温度为650℃时，镀镍钴钢带在1．00oNaCl和0．1％Hzs047昆合溶液及10％NaOH溶液中的耐腐蚀性能均为最好的，当热处理温度超过650℃后其耐腐蚀性能降低。这说明合适的热处理温序能有效地提高镛屡的耐腐饨件能．
The steel-strip with nickel-cobalt coating was heat treated for 3 h at the temperatures of 550 °C, 650 °C 1 and 750 °C. Electrochemical was used to test the corrosion resistance of nickel-cobalt coating on steel-strip in 1.0% NaC1 and 0. 1% H2 SO4 mixed solutions and 10% NaOH solution before and after heat treatment. The morphology, composition and texture orientation of nickel-cobalt coating on steel-strip at different temperatures were studied by scanning electron microscopy （SEM）, energy dispersive spectrometry （EDS） and X-ray diffraction （XRD）. The results showed that with the increase of heat treatment temperatures, the grain size of nickel-cobalt coating increased correspondingly, a nickel-cobalt/iron diffusion layer between coating and substrate was formed. When the heat treatment temperature was 650 °C, the corrosion resistance of nickel-cobalt coating on steel-strip was the best both in 1.0%NaC1-0. 1% HzSO4 mixed solution and 10% NaOH solution, and then decreased when the temperature exceeded 650°C, indicating that a suitable heat treatment temperature can improve the corrosion resistance of the coating.
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