| 摘要: |
| Pb-Sn钎料系统中Sn含量低于一定值时,其润湿性和抗腐蚀性能将明显下降.为了开发适合我国资源情况的、用于汽车拖拉机散热器的低锡钎料.开展了合金元素对Pb-3Sn和Pb-10Sn钎料系统润湿性和抗腐蚀性能影响的研究。试验结果表明,Ag、Zn和REs(混合稀土)较明显地提高其润湿性和抗腐蚀性能:Bi<3%时对润湿性不利,对抗腐蚀性能可减少失重量,但不钝化;Sb明显降低润湿性能,对抗腐蚀性能与Bi相似. |
| 关键词: 汽车 散热器 钎料 |
| DOI： |
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| EFFECT OF ALLOYING ELEMENT ON THE WETTABILITY AND CORROSION RESISTANCE OF LOW-TIN SOLDERS |
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Yi Yunchen, Zhou Gang, Ju Weiping, Li Daiping, Song Chengbin
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Jilin University of Technology
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| Abstract: |
| The automotive and tractor radiators were brazed mainly with solders containing less than 10% Sn and 0.5-1.5% Ag in the last 15 years abroad,primarily to save cost and to improve mechanical properties.Solders with less than 5% Sn,besides low wettability,showed some problems in corrosion resistance after long service.Adding Zn,REs,Ag,Sb and Bi alloys to Pb-3% Sn and Pb-10% Sn solder systems can obviously improve their corrosion resistance to water coolant.Wet test for these high lead solders demonstrated that Zn,REs and Ag can significantly increase wettability on copper within the range tested.But Sb and Bi can decrease the wetting properties of solders. |
| Key words: Automobiles Radiators Solders |
