| 稀土铈在Sn-Zn无铅钎料表面的高温氧化行为 |
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| 引用本文： | 王慧,刘新才,潘晶,马永存. 稀土铈在Sn-Zn无铅钎料表面的高温氧化行为[J]. 焊接学报, 2010, 31(12): 65-69 |
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| 作者姓名： | 王慧 刘新才 潘晶 马永存 |
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| 作者单位： | 宁波大学材料科学与化学工程学院,浙江宁波,315211 |
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| 基金项目： | 宁波大学人才工程资助项目，宁波大学王宽诚幸福基金 |
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| 摘 要： | 通过俄歇电子能谱法和X射线光电子能谱法研究了Sn-9Zn-0.15Ce和Sn-9Zn-0.002Al-0.2Ga-0.25Ag-0.15Ce两种钎料表面Ce元素的分布和存在形式.结果表明,铈在Sn-9Zn-0.15Ce钎料表面0~40 nm范围内的富集区浓度达到30%(原子分数)左右,是基体内部的250倍,主要以CeO2和Ce2O3形态存在.在Sn-9Zn-0.15Ce钎料中复合添加镓和铝后,Ga元素在钎料表面0~6 nm范围内富集,Al元素在表面2~20 nm范围内富集并主要以氧化态形式存在.Ce元素富集在距离钎料表面2~60 nm的范围内,处于Ga,Al元素富集层的下方;由Ga,Al元素富集层构成的致密保护膜可显著降低表面铈被氧化的概率.
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| 关 键 词： | 无铅钎料 铈 氧化 表面富集 |
| 收稿时间： | 2010-08-20 |
High-temperature oxidation behavior of cerium on the surface of Sn-Zn lead-free solders |
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| WANG Hui,LIU Xincai,PAN Jing and MA Yongcun. High-temperature oxidation behavior of cerium on the surface of Sn-Zn lead-free solders[J]. Transactions of The China Welding Institution, 2010, 31(12): 65-69 |
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| Authors: | WANG Hui LIU Xincai PAN Jing MA Yongcun |
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| Affiliation: | Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China,Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China,Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China and Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China |
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| Abstract: | The distribution and existing form of Ce on the surface of Sn-9Zn-0.15Ce and Sn-9Zn-0.002Al-0.2Ga-0.25Ag-0.15Ce solder are investigated by atomic emission spectrometry and X-ray photoelectron spectroscopy.Results indicate that Ce enriches on the surface of the Sn-9Zn-0.15Ce solder in the range of 0 to 40 nm.The concentration of Ce in the enriched zone is about 30 at.%,which is 250 times of that in the bulk solder,and the enriched Ce on the surface is mostly oxidized as CeO2 and Ce2O3.With the multi-addition of Ga and Al in the Sn-9Zn-0.002Al-0.2Ga-0.25Ag-0.15Ce solder,Ga enriches in range of 0 to 6 nm on the surface,while Al enriches in range of 2 to 20 nm in oxidized form.The Ce-enriched layer is in the range of 2 to 60 nm on the surface covered by the Ga and Al enriched layers,and the oxidation of Ce is depressed significantly. |
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| Keywords: | Sn-Zn |
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