Sn-Ag-Cu无铅钎料粉末与合金的组织及钎焊性能对比

许天旱; 王党会

重有色合金 | 浏览量 : 0 下载量: 175 CSCD: 1

导出
分享
收藏
专辑

Sn-Ag-Cu无铅钎料粉末与合金的组织及钎焊性能对比
Microstructure and Solderability of Sn-Ag-Cu Lead-free Solder Powder and Alloy
2009年29卷第10期页码：969-972
纸质出版日期： 2009 ，
DOI：

扫描看全文

[1]许天旱,王党会.Sn-Ag-Cu无铅钎料粉末与合金的组织及钎焊性能对比[J].特种铸造及有色合金,2009,29(10):969-972+882.

Xu Tianhan1, Wang Danghui1. Microstructure and Solderability of Sn-Ag-Cu Lead-free Solder Powder and Alloy[J]. Special Casting & Nonferrous Alloys, 2009,29(10):969-972.
[1]许天旱,王党会.Sn-Ag-Cu无铅钎料粉末与合金的组织及钎焊性能对比[J].特种铸造及有色合金,2009,29(10):969-972+882. DOI：

Xu Tianhan1, Wang Danghui1. Microstructure and Solderability of Sn-Ag-Cu Lead-free Solder Powder and Alloy[J]. Special Casting & Nonferrous Alloys, 2009,29(10):969-972. DOI：

摘要

利用自行设计的超音速雾化制粉装置制备了Sn-3Ag-2.8Cu无铅焊锡粉末

并将不同介质雾化的粉末组织和普通合金组织进行对比

同时选择一种综合性能良好的粉末

将其钎焊性能和普通合金进行对比。结果表明

氮气雾化粉末比空气雾化粉末具有更高的凝固速度;雾化粉末组织更细小

主要由基体上弥散分布的多边形Cu6Sn5IMC和粒状Ag3SnIMC组成;粉末比普通合金与铜基板形成的IMC更不规则

且扩散层与基板的界面更模糊;雾化粉末的蠕变断裂寿命显著高于普通合金。因此

Sn-3Ag-2.8Cu无铅焊锡粉末性能优于普通合金。

Abstract

We have developed an ultrasonic atomizing equipment to have successfully prepared Sn3Ag2.8Cu lead free solder powder. The microstructure of the powders at different atomizing medium is compared with that of the conventional alloy

and a type of optimized powder is selected to compare its solderability with that of the conventional alloy. The results reveal that the solidification rate of nitrogen atomized powder is faster than that of air atomized one. The microstructure of atomized powder with finer grain size is composed of polygonal Cu6Sn5 and granular Ag3Sn IMC （intermetallic compound） which are distributed dispersively in the matrix. The IMC of the powder with Cu substrate is more irregular

and the interface between diffusion layer and Cu substrate is more blurry than that of conventional alloy with Cu substrate. In addition

the creep rupture life of the atomized powder is greatly improved compared with the conventional alloy. So the comprehensive properties of the Sn3Ag2.8Cu lead free solder powder is distinctly superior to that of the conventional alloy.