| Effects of Ca addition on microstructure and properties of AZ63 magnesium alloy |
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| 作者姓名： | 钱宝光 耿浩然 陶珍东 赵鹏 田宪法 |
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| 作者单位： | Key Laboratory of Liquid Structure and Heredity of Materials，Ministry of Education，Shandong University，College of Materials Science and Engineering，Ji'nan University，Ji'nan 250022，China，College of Materials Science and Engineering，Ji'nan University，Ji'nan 250022，China，Key Laboratory of Liquid Structure and Heredity of Materials，Ministry of Education，Shandong University，Key Laboratory of Liquid Structure and Heredity of Materials，Ministry of Education，Shandong University Ji'nan 250061，China，College of Materials Science and Engineering，Ji'nan University，Ji'nan 250022，China，Ji'nan 250061，China，Ji'nan 250061，China |
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| 摘 要： | 1 INTRODUCTIONMg Alalloyshaveaverywideapplicationbecauseoftheirexcellentproperties ,lowmanufacturecost ,easymeltingtechniqueandnoexpensiveele mentscontent1] .Oneofthiskindalloys ,AZ6 3mag nesiumalloy ,isawidelyappliedmagnesiumsacrifi cialanodewhichisusedextensivelyinundergroundandfreshwateratpresent .However ,compared withthataboard ,homesacrificialanodehassomedemer its :lowcurrentefficiencyandweakprotectionfunc tion ,soinvestigatingthehighdriving potentialandhighefficiencysacrificiala…
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| 关 键 词： | 钙 微观结构 镁合金 AZ63 粘性 电化学特征 |
Effects of Ca addition on microstructure and properties of AZ63 magnesium alloy |
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| QIAN Bao-guang.Effects of Ca addition on microstructure and properties of AZ63 magnesium alloy[J].Transactions of Nonferrous Metals Society of China,2004,14(5):987-991. |
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| Authors: | QIAN Bao-guang |
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| Affiliation: | QIAN Bao-guang~ |
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| Abstract: | Effects of Ca addition on the microstructure and viscosity as well as electrochemical properties of casting AZ63 magnesium alloy were studied. Testing results show that the viscosity value increases with the increase of calcium content, especially at the higher temperature, and there exists such a relation between the ignition temperature and viscosity of magnesium alloy: when the melt viscosity increases, the ignition temperature increases too. The microstructure of AZ63 magnesium alloy is first refined and then coarsened with the increase of Ca addition. By the addition of 0.15% Ca, AZ63 alloy has more negative open-circuit potential(1. 624 5V), bigger anode efficiency (55.65%) and lower corrosion rate(0.214g/(m2·h).AZ63 allo6y containing some Ca content is a high driving-potential and high-efficiency sacrificial anodes material. |
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| Keywords: | magnesium alloy viscosity electrochemical properties |
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