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單輥旋淬Au-19.25Ag-12.80Ge釬料薄帶的顯微組織與焊接性能
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國(guó)家自然科學(xué)基金（1105139）；湖南省自然科學(xué)湘潭聯(lián)合基金重點(diǎn)項(xiàng)目（10JJ8002）


Microstructure and Welding Properties of Single-Roller Melt Spinned Au-19.25Ag-12.80Ge Solder Ribbon
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    摘要:

    采用單輥旋淬法制備Au-19.25Ag-12.80Ge釬料薄帶，利用差熱分析儀、SEM及TEM對(duì)釬料薄帶的熔化特性及顯微組織進(jìn)行了觀察分析，并對(duì)其與Ni的焊接性能加以研究。結(jié)果表明：?jiǎn)屋佇惴ㄖ苽銩u-19.25Ag-12.80Ge釬料薄帶的液相線溫度比釬料母合金有所降低，熔化溫度區(qū)間縮小了約4 ℃；單輥旋淬工藝使釬料薄帶顯微組織分布均勻且顯著細(xì)化，近輥面一側(cè)形成了尺寸40~50 nm的納米晶層，沿薄帶厚度方向存在組織突變，這種突變是由存在的臨界冷卻速度造成的。釬料薄帶與Ni基體表面潤(rùn)濕優(yōu)良，形成了可靠的冶金結(jié)合界面，在相同條件下與Ni的焊接接頭抗剪強(qiáng)度比釬料母合金形成的焊接接頭提高了近60%。

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    Au-19.25Ag-12.80Ge solder ribbons were prepared by single-roller melt spinning technology. The melting behavior and microstructure of the solder ribbons were analyzed by means of differential thermal analyzers, SEM and TEM, and the welding property with Ni was also studied. The results show that liquidus temperature of the solder ribbons prepared by the single-roller melt spinning method is some lower than that of the mother alloy, and the melting temperature interval is decreased by 4 oC. Uniformly distributed and greatly refined microstructure has been obtained because of the melt spinning process, and nanocrystalline with a size of 40-50 nm has formed close to the roller surface side; there exists a structure mutation in the direction of ribbon thickness, and the mutation is possibly caused by the critical cooling rate. The solder ribbon has good wettability with Ni and reliable metallurgical bonding interface has formed. Under the same condition, the shear strength of the welding joint with Ni has increased by 60% compared with that of the welding joint of the mother alloy solder.

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崔大田,王志法,胡忠舉,劉文輝,劉龍飛.單輥旋淬Au-19.25Ag-12.80Ge釬料薄帶的顯微組織與焊接性能[J].稀有金屬材料與工程,2012,41(3):442~446.[Cui Datian, Wang Zhifa, Hu Zhongju, Liu Wenhui, Liu Longfei. Microstructure and Welding Properties of Single-Roller Melt Spinned Au-19.25Ag-12.80Ge Solder Ribbon[J]. Rare Metal Materials and Engineering,2012,41(3):442~446.]
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  • 收稿日期:2001-03-27
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