| 合金元素锡对铝基牺牲阳极组织和电化学性能的影响 |
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| 引用本文： | 齐公台,郭稚弧,林汉同,魏伯康. 合金元素锡对铝基牺牲阳极组织和电化学性能的影响[J]. 中国海上油气(工程), 2000, 0(6) |
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| 作者姓名： | 齐公台 郭稚弧 林汉同 魏伯康 |
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| 作者单位： | 华中理工大学化学系 武汉430074(齐公台,郭稚弧,林汉同),华中理工大学化学系 武汉430074(魏伯康) |
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| 摘 要： | 改变锡含量,熔炼3种Al-Zn-In-Sn-Mg-RE牺牲阳极。采用恒电流方法,测定它们的基本电化学性能。利用金相显微镜、扫描电镜(SEM)和能谱分析技术,考察它们的晶粒尺寸、第二相数量及成分。结果表明:适量的锡不会在晶界偏析,晶界析出物有RE相,降低了晶间腐蚀倾向,使电流效率提高;过量的锡将在晶界偏析,晶界析出物中有Sn相,对改善阳极性能没有作用。
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| 关 键 词： | 铝合金 牺牲阳极 电化学性能 金相结构 锡 |
Effect of Element Tin on Microstructure and Electrochemistry Performance of Aluminum Alloys for Sacrificial Anode |
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| Qi Gongtai,Guo Zhihu,Lin Hantong,Wei Bokang. Effect of Element Tin on Microstructure and Electrochemistry Performance of Aluminum Alloys for Sacrificial Anode[J]. China Offshore Oil and Gas(Engineering), 2000, 0(6) |
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| Authors: | Qi Gongtai Guo Zhihu Lin Hantong Wei Bokang |
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| Abstract: | Three kinds of aluminum alloy anodes having different tin contents were cast. Electrochemistry performance of anodes have been measured with constant current method, and their microstructures have also been examined by metallography and scanning electron microscope (SEM). Results showes that the suitable quantity tin can not appeared crystal boundary, and RE phase segregation reduced the tendency of intergranuiar corrosion, current efficiency of anode increased recessive quantity tin appear"at crystal boundary with Sn phase, and can not improve the performance of aluminum anode. |
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| Keywords: | aluminum alloy saciiiicial anode electrochemistry performance microstructure tin |
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