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低熔点Sn-Ag-Cu合金成分的优化

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Indexed by:期刊论文

Date of Publication:2004-01-30

Journal:电子工艺技术

Volume:25

Issue:1

Page Number:13-16

ISSN No.:1001-3474

Key Words:Sn-Ag-Cu合金;共晶;焊料;银含量

Abstract:发现Sn-Ag和Sn-Cu二元相图的共晶点Sn96.2Ag3.8和Sn98.7Cu1.3的平均原子尺寸相等,Ra=0.154 6nm.从而在三元Sn-Ag-Cu合金中,通过连接Sn-Ag和Sn-Cu二元共晶点得到一条Ra=0.154 6 nm的平均原子尺寸线,考虑到误差,在这条线近处选择了Ra=0.154 4和Ra=0.1548的两条平均原子尺寸线.在高真空下用电弧熔炼法制备了三类合金(Sn96.2Ag3.8)x(Sn98.7Cu1.3)1-x(x=0.1,0.3,0.5,0.7)、(Sn94Ag6)x(Sn97.8Cu2.2)1-x(x=0.2,0.5,0.7)和(Sn98Ag2)x(Sn99.3Cu0.7)1-x(x=0.1,0.3,0.6).

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