| 摘要: |
| 金属表面发黑处理可以提高金属的抗腐蚀、耐磨等性能，可以根据具体的使用场合选择发黑方法，以1.5 mm厚的紫铜合金片为样品，分别采用化学腐蚀法、热喷涂法和直接喷漆法3种不同的发黑技术对其表面进行处理。通过扫描电子显微镜、纳米压痕仪和紫外可见分光光度计对其表面形貌、薄膜与基底结合强度曲线和吸附光进行了表征。结果表明：通过化学法发黑处理的表面覆盖了一层粉末状的固体小颗粒，表面比较平整疏松；而通过直接喷漆的表面覆盖了一层不规整的薄膜，同时还可以看到片状的不规则物质散落在膜的表面；用热喷涂法处理的表面比较粗糙和致密，性能最稳定。薄膜与基底的结合强度曲线表明采用热喷涂法获得的薄膜与基底的结合力最大。这3种不同表面对可见光的吸光度中，喷漆处理的表面吸光率最高。 |
| 关键词: 铜 发黑 热喷涂 化学腐蚀 |
| DOI：10.3969/j.issn.1007-9289.2013.06.013 |
| 分类号: |
| 基金项目: |
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| Comparation of Several Different Blacken Technologies of Copper Surface |
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XU Lingshun, Li Yong, XU Zhongtang, WU Yifeng1,2,3
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1.The 16th Research Institute of China Electronics Technology Group Corporation, Hefei 230043;2.Anhui Vacree Technologies Co., Ltd., Hefei 230088;3.Southwestern Institute of Physics Center for Fusion Science, Chengdu 610041
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| Abstract: |
| Blacken treatment can enhance the performance anticorrosion, antifriction of the metal surfaces. Copper and its alloy are widely used in low temperature fields as their high thermal conductivity. In some special conditions, copper surface is blackened for the light absorbing application. There are many technologies for copper blacken treatment, and each method owns its feature. The blacken methods are chosen according to the specific occasions. In this paper, a copper alloy of 1.5 mm in thickness is selected as the sample, three copper blacken technologies, which are chemical corrosion method, thermal spray coating method and spraypaint method are selected. The morphology, binding intensity curves of thin films and substrates and light absorption capability were characterized by scanning electron microscopy, nanoindentation device and UVVis spectrophotometer. The results show that the surface treated by chemical corrosion is covered by a layer of small particles and the surface is smooth and loose. The surface is covered by a thin and none structured film，in addition some plated particles. A rough and dense film is prepared with the thermal spray coating methods. Binding intensity curves of thin films and substrates indicate that the binding force of film and substrate prepared by thermal spray is the strongest. Finally, the capability of visible light adsorption of the three samples was tested, and the surface treated with chemical corrosion owns the highest light absorbency. |
| Key words: Cu blacken thermal spray coating chemical corrosion |
