| A Study on Kinetics of the Bronze Powder-Corrosion Development |
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| 作者姓名： | 范崇正 吴佑实 王昌燧 王胜君 胡克良 赵化章 |
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| 作者单位： | Department of Modern Chemistry，University of Science & Technology of China，Hefei 230026，PRC，Auhui Institute of Machinery & Electrical Engineering Wuhu 241000 PRC.，Department of Modern Chemistry，University of Science & Technology of China，Hefei 230026，PRC，Department of Modern Chemistry，University of Science & Technology of China，Hefei 230026，PRC，Department of Modern Chemistry，University of Science & Technology of China，Hefei 230026，PRC，Department of Modern Chemistry，University of Science & Technology of China，Hefei 230026，PRC |
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| 基金项目： | Project conducted by the Structure Analysis Open Laboratory,USTC，supported by the National Natural Science Foundation of China |
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| 摘 要： | HCl acid was applied to the surface of the self-prepared Cu-Sn-Pb alloy, and the methods of IR-REF, IR-PAS, XRD, SPM, SEM, TEM and pH were employed to study the forming process and the developing speed of the bronze powder-corrosion Cu_2(OH)_3Cl (PC). It is found that the corrosion develops fast in acid environment at room temperature; the corrosion Cu_2(OH)_3Cl with valence Cu~(2+) forms from alloy through the intermediate corrosion CuCl with valence Cu~+; PC is contagious, which can pollute the fresh bronze alloy from the corroded sample by air; when CuCl is oxidized to produce Cu_2(OH)_3Cl, Cu~(2+) cation forms at the same time, and both the oxidizing reactions have zero-order reaction with respect to O_2 in the air; the P1 formation reaction has first-order reaction with respect to Cull; in enormous distilled water Cu_2(OH)_3Cl forms from CuCl through the intermediate product Cu_2O.All the results above are discussed in the present article, and the mechanism of PC formation is studied further. The r
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A Study on Kinetics of the Bronze Powder-Corrosion Development |
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| FAN Chong-Zheng WU You-Shi WANG Chang-Sui WANG Sheng-Jun HU Ke-Liang ZHAO Hua-Zhang.A Study on Kinetics of the Bronze Powder-Corrosion Development[J].Science in China(Chemistry),1993(6). |
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| Authors: | FAN Chong-Zheng WU You-Shi WANG Chang-Sui WANG Sheng-Jun HU Ke-Liang ZHAO Hua-Zhang |
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| Abstract: | HCl acid was applied to the surface of the self-prepared Cu-Sn-Pb alloy, and the methods of IR-REF, IR-PAS, XRD, SPM, SEM, TEM and pH were employed to study the forming process and the developing speed of the bronze powder-corrosion Cu_2(OH)_3Cl (PC). It is found that the corrosion develops fast in acid environment at room temperature; the corrosion Cu_2(OH)_3Cl with valence Cu~(2+) forms from alloy through the intermediate corrosion CuCl with valence Cu~+; PC is contagious, which can pollute the fresh bronze alloy from the corroded sample by air; when CuCl is oxidized to produce Cu_2(OH)_3Cl, Cu~(2+) cation forms at the same time, and both the oxidizing reactions have zero-order reaction with respect to O_2 in the air; the P1 formation reaction has first-order reaction with respect to Cull; in enormous distilled water Cu_2(OH)_3Cl forms from CuCl through the intermediate product Cu_2O.All the results above are discussed in the present article, and the mechanism of PC formation is studied further. The reaction orders, the rate constants and the apparent activity energies are calculated. |
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| Keywords: | ehemieal kineties colloid dispersive system powder corrosion |
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