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   black patina 在 金属学及金属工艺 分类中 的翻译结果: 查询用时:0.009秒
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black patina
相关语句
  黑变
    The effect of impurity pb2+ in the electrolyte on the black patina formation on galvanized sheet surface and the properties of the coatings have been investigated by SEM, XRD, XPS and humidity cabinet tests.
    采用实验室模拟的方法,就Pb2+对电镀锌钢板黑变现象的影响进行了研究,同时利用SEM、XRD、XPS及电化学测试方法对镀锌层的特性和表面膜结构进行了测试、分析。
短句来源
    The results show that the Pb2+ concentration has great effect on black patina formation, and the black patina consists mainly of ZnO1-x.
    结果表明,Ph2+对电镀锌钢板黑变的影响极大; 黑变表面膜的主要成分是ZnO1-x,本文还讨论了Pb2+对电镀锌钢板黑变影响的机制。
短句来源
    In order to make clear the mechanism of that the chromate passivation film increases the corrosion resistance of the zinc coating and to study the black patina which is a kind of prime corrosion phenomenon, the dynamic regulation about the black patina of electrogalvanized steel sheets has been studied.
    为探索铬酸盐钝化膜提高锌镀层耐蚀性的机理和研究其发生黑变的初期腐蚀现象, 对电镀锌钢板黑变的动力学规律进行了研究。
短句来源
    The rates of black patina formation chromated zinc plates were studied by surface lightness difference method and humidity cabinet test (HCT), under the conditions with and without illumination.
    在硫酸盐镀锌液中所得的含铅与不含铅的镀锌试片 ,经铬酸盐钝化后 ,通过湿热试验 (HCT)进行了黑变培养。
短句来源
    It was found that lead ion can decrease the activation energy E a of black patina formation from about 34? kJ/mol to about 21? kJ/mol, and accelerates the rate of black patina.
    发现镀液中铅离子的存在使黑变反应的活化能Ea 从 34kJ/mol左右降低到 2 1kJ/mol左右 ,从而加速了黑变反应。
短句来源
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  “black patina”译为未确定词的双语例句
    Effects of Pb Ion on the Formation of Black Patina of Galvanized Steel Sheet
    铅离子对电镀锌钢板黑变的影响
短句来源
    Kinetic study of black patina on electrogalvanized steel sheets
    电镀锌钢板黑变机理的动力学
短句来源
    Effects of lead and illumination on black patina of zinc plating
    铅与光照对镀锌层黑变的影响
短句来源
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  black patina
The surface of some of arrow-heads was covered with black patina and others with ginger-green patina.
      


The effect of impurity pb2+ in the electrolyte on the black patina formation on galvanized sheet surface and the properties of the coatings have been investigated by SEM, XRD, XPS and humidity cabinet tests. The results show that the Pb2+ concentration has great effect on black patina formation, and the black patina consists mainly of ZnO1-x.

采用实验室模拟的方法,就Pb2+对电镀锌钢板黑变现象的影响进行了研究,同时利用SEM、XRD、XPS及电化学测试方法对镀锌层的特性和表面膜结构进行了测试、分析。结果表明,Ph2+对电镀锌钢板黑变的影响极大;黑变表面膜的主要成分是ZnO1-x,本文还讨论了Pb2+对电镀锌钢板黑变影响的机制。

In order to make clear the mechanism of that the chromate passivation film increases the corrosion resistance of the zinc coating and to study the black patina which is a kind of prime corrosion phenomenon, the dynamic regulation about the black patina of electrogalvanized steel sheets has been studied. The corrosion rate of zinc coating is characterized by the relationships of surface lightness differences of chromated and unchromated sheets with test time in humidity cabinet test (HCT). It is...

In order to make clear the mechanism of that the chromate passivation film increases the corrosion resistance of the zinc coating and to study the black patina which is a kind of prime corrosion phenomenon, the dynamic regulation about the black patina of electrogalvanized steel sheets has been studied. The corrosion rate of zinc coating is characterized by the relationships of surface lightness differences of chromated and unchromated sheets with test time in humidity cabinet test (HCT). It is found that corrosion regulation of chromated zinc coating conforms to Wagner equation and that of unchromated zinc coating conforms to logarithm equation,and the corresponding activity energy of the corrosion reaction was figured out. It is also found that the passivation makes the activity energy raise more than one order of magnitude. These experimental results show that the corrosion is caused by the diffusion of oxygen towards inner and the diffusion of zinc ion towards external in passivating film, and the existence of the passivating film affects the corrosion mechanism.

为探索铬酸盐钝化膜提高锌镀层耐蚀性的机理和研究其发生黑变的初期腐蚀现象, 对电镀锌钢板黑变的动力学规律进行了研究。以湿热实验中镀锌层表面明度差随时间变化的关系来表征钝化和未钝化试片腐蚀的速度, 发现钝化后的镀锌层的腐蚀规律符合Wagner 方程, 未钝化的镀锌层的腐蚀规律符合对数方程, 并求出了相应的腐蚀反应的活化能。钝化使腐蚀反应的活化能提高了一个数量级以上。实验结果表明该腐蚀是由于氧的向内扩散和锌离子的向外扩散, 钝化膜的存在影响了腐蚀的历程。

The rates of black patina formation chromated zinc plates were studied by surface lightness difference method and humidity cabinet test (HCT), under the conditions with and without illumination. Zinc plates were obtained from sulphate baths with and without lead ion. It was found that lead ion can decrease the activation energy E a of black patina formation from about 34?kJ/mol to about 21?kJ/mol, and accelerates the rate of black patina. Illumination decreases the E a by 0.5?kJ/mol,...

The rates of black patina formation chromated zinc plates were studied by surface lightness difference method and humidity cabinet test (HCT), under the conditions with and without illumination. Zinc plates were obtained from sulphate baths with and without lead ion. It was found that lead ion can decrease the activation energy E a of black patina formation from about 34?kJ/mol to about 21?kJ/mol, and accelerates the rate of black patina. Illumination decreases the E a by 0.5?kJ/mol, but also decreases pre exponential factor A to a great extent, and the total effects of illumination withhold the rate of black patina. [

在硫酸盐镀锌液中所得的含铅与不含铅的镀锌试片 ,经铬酸盐钝化后 ,通过湿热试验 (HCT)进行了黑变培养。采用试片的表面明度差来表征黑变的程度 ,考察了铅和光照对其黑变速率的影响。发现镀液中铅离子的存在使黑变反应的活化能Ea 从 34kJ/mol左右降低到 2 1kJ/mol左右 ,从而加速了黑变反应。光照虽然使Ea 降低了 0 .5kJ/mol,但同时较大幅度地降低了指前因子A的值 ,总的作用结果是抑制了黑变的反应

 
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