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Ga、Al對Sn-Zn釬料耐蝕及高溫抗氧化性能的影響
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Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
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    采用侵蝕失重法研究Ga、Al對Sn-9Zn釬料在3.5%NaCl水溶液中耐腐蝕性的影響。結(jié)果表明，添加Ga元素后，腐蝕產(chǎn)物的粘附性提高，均勻覆蓋在釬料表面上，提高了釬料的耐蝕性能；添加Al以后，Zn和Al被選擇性腐蝕，腐蝕隨著Al含量的增加而加劇。采用熱重分析(TGA)和俄歇電子能譜(AES)研究Ga、Al對Sn-9Zn釬料高溫抗氧化性的影響。結(jié)果表明，Ga可在釬料表面形成一層集膚層；Al可在釬料表面形成一層致密的氧化膜，兩者均可阻擋空氣中的氧向釬料內(nèi)部擴散，從而大大改善釬料的高溫抗氧化性。

    Abstract:

    Effects of Ga and Al additions on the corrosion resistance of Sn-9Zn lead free solder in 3.5% NaCl solution were researched by erosion mass loss evaluation. Effects of the additions on high-temperature oxidation resistance of the solder were investigated by TGA and AES. Results indicate that the corrosion resistance of Sn-Zn solders is improved by addition of Ga, for the corrosion products exhibit better adhesiveness on the solder surface after adding Ga; however, with Al addition, the corrosion resistance deteriorates for the selective erosion of Al and Zn. The TGA results show that the high-temperature oxidation resistance of Sn-9Zn solder is observably improved by adding Ga or Al; the AES analysis shows that Ga could form a protective skin on the solder surface, while Al can form a dense protective oxidation layer, both of which can hinder diffusion of the oxygen to the inner.

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王 慧,薛松柏,陳文學(xué),馬秀萍. Ga、Al對Sn-Zn釬料耐蝕及高溫抗氧化性能的影響[J].稀有金屬材料與工程,2009,38(12):2187~2190.[Wang Hui, Xue Songbai, Chen Wenxue, Ma Xiuping. Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China[J]. Rare Metal Materials and Engineering,2009,38(12):2187~2190.]
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  • 收稿日期:2008-12-10
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