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Sn-Bi-In低溫?zé)o鉛釬料的組織和性能研究
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北京工業(yè)大學(xué),北京工業(yè)大學(xué),北京工業(yè)大學(xué),北京工業(yè)大學(xué)

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國家自然科學(xué)基金資助(項(xiàng)目號51275006,51005004,51475005)；云南省對外科技合作計(jì)劃(省院省?？萍己献?(項(xiàng)目號2012IB003)和北京市自然科學(xué)基金重點(diǎn)項(xiàng)目(項(xiàng)目號KZ20110005002)


Microstructures and Properties of Sn-Bi-In Low-temperature Lead-free Solders
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Beijing University of Technology,Beijing University of Technology,Beijing University of Technology,Beijing University of Technology

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    摘要:

    研究了Sn-Bi-In釬料的微觀組織、熱學(xué)特性、潤濕性能以及力學(xué)性能隨合金成分的變化特點(diǎn)。結(jié)果表明：Sn-Bi-In釬料的顯微組織含有β-Sn相、Bi相以及InBi中間相,Bi含量的減少會導(dǎo)致Bi相和InBi相所占比例降低；釬料DSC曲線中存在三個(gè)不同大小的吸熱峰,所有合金熔化開始溫度在101.3-103.4℃之間,隨著Sn含量的增加,釬料的熔程先減小后增大,鋪展面積先增大后減?。烩F料的顯微硬度隨著Bi含量的增加而增大,且In的添加使釬料的硬度明顯高于Sn-Bi共晶合金；釬料的抗拉強(qiáng)度和斷后伸長率隨著Bi含量的增大而降低。

    Abstract:

    The characteristics of microstructures, thermal properties, wettabilities and mechanical properties of Sn-Bi-In solders with different content were studied. The results show that the microstructure of Sn-Bi-In solders consists of β-Sn, Bi and InBi phases, the reduction of Bi content can result in the proportion decrease of Bi and InBi phases. There are three endothermic peaks with different magnitudes on the DSC curves, and the onset melting temperature of solders are around 101.3-103.4℃, with the increase of Sn concentration, the melting range of solders firstly decreases and then increases, while the spreading area firstly increases and then decreases. The mircrohardness of solders increases with the rising of Bi conetent, in addition, the hardness is remarkably higher than Sn-Bi eutectic alloy when the In element is added to solder. The tensile strength and elongation of solders decrease with reduction of Bi content.

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李琴,雷永平,符寒光,林健. Sn-Bi-In低溫?zé)o鉛釬料的組織和性能研究[J].稀有金屬材料與工程,2017,46(10):3038~3042.[Li Qin, Lei Yongping, Fu Hanguang, Lin Jian. Microstructures and Properties of Sn-Bi-In Low-temperature Lead-free Solders[J]. Rare Metal Materials and Engineering,2017,46(10):3038~3042.]
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  • 收稿日期:2015-06-16
  • 最后修改日期:2015-07-21
  • 錄用日期:2015-09-07
  • 在線發(fā)布日期: 2017-12-01
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