Effect of gamma irradiation on microstructural evolution and mechanical properties of SnPb eutectic solder joints

Qilong Guan; Chunjin Hang; Shengli Li; Xiaojiu Tang; Gang Yao; Dan Yu; Ying Ding; Xiuli Wang; Wei Zhang

doi:10.1016/j.jmrt.2023.10.051

Effect of gamma irradiation on microstructural evolution and mechanical properties of SnPb eutectic solder joints

Qilong Guan
, Chunjin Hang^*
, Shengli Li
, Xiaojiu Tang
, Gang Yao
, Dan Yu
, Ying Ding
, Xiuli Wang
, Wei Zhang^*

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology
Heilongjiang Institute of Atomic Energy
CAS - Beijing Institute of Control Engineering

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

Eutectic SnPb ball grid array (BGA) solder joints were exposed to ⁶⁰Co source gamma irradiation at a dose rate of 1 Gy(Si)/s from 0, 50, 100, 150 and 200 h in air. The effects of gamma irradiation on the microstructure evolution and mechanical properties of the solder joints were investigated. After irradiation, β-Sn and Pb on the surface of the solder joint was oxidized to SnO₂, PbO and PbO₂, and an oxide layer covered with Cu oxide was formed on the surface of the solder joint. The formation process and mechanism of the oxide layer were analyzed. Sn and Pb depletion holes and Cu depletion areas appeared on the solder joint surfaces after various irradiation time. SnO₂ nanocrystals and Sn wrinkles appeared in the FIB specimen after irradiation. After 200 h of irradiation, the melting temperature of the SnPb eutectic solder alloy decrease, and the shear force value of the solder joint first increase and then decrease.

Original language	English
Pages (from-to)	2929-2938
Number of pages	10
Journal	Journal of Materials Research and Technology
Volume	27
DOIs	https://doi.org/10.1016/j.jmrt.2023.10.051
State	Published - 1 Nov 2023

Keywords

Gamma irradiation
Oxidation of β-Sn to SnO
SnPb eutectic solder joint

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10.1016/j.jmrt.2023.10.051

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@article{e3490c4f9e25418db678e09fe3ee97bd,

title = "Effect of gamma irradiation on microstructural evolution and mechanical properties of SnPb eutectic solder joints",

abstract = "Eutectic SnPb ball grid array (BGA) solder joints were exposed to 60Co source gamma irradiation at a dose rate of 1 Gy(Si)/s from 0, 50, 100, 150 and 200 h in air. The effects of gamma irradiation on the microstructure evolution and mechanical properties of the solder joints were investigated. After irradiation, β-Sn and Pb on the surface of the solder joint was oxidized to SnO2, PbO and PbO2, and an oxide layer covered with Cu oxide was formed on the surface of the solder joint. The formation process and mechanism of the oxide layer were analyzed. Sn and Pb depletion holes and Cu depletion areas appeared on the solder joint surfaces after various irradiation time. SnO2 nanocrystals and Sn wrinkles appeared in the FIB specimen after irradiation. After 200 h of irradiation, the melting temperature of the SnPb eutectic solder alloy decrease, and the shear force value of the solder joint first increase and then decrease.",

keywords = "Gamma irradiation, Oxidation of β-Sn to SnO, SnPb eutectic solder joint",

author = "Qilong Guan and Chunjin Hang and Shengli Li and Xiaojiu Tang and Gang Yao and Dan Yu and Ying Ding and Xiuli Wang and Wei Zhang",

note = "Publisher Copyright: {\textcopyright} 2023 The Authors",

year = "2023",

month = nov,

day = "1",

doi = "10.1016/j.jmrt.2023.10.051",

language = "英语",

volume = "27",

pages = "2929--2938",

journal = "Journal of Materials Research and Technology",

issn = "2238-7854",

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TY - JOUR

T1 - Effect of gamma irradiation on microstructural evolution and mechanical properties of SnPb eutectic solder joints

AU - Guan, Qilong

AU - Hang, Chunjin

AU - Li, Shengli

AU - Tang, Xiaojiu

AU - Yao, Gang

AU - Yu, Dan

AU - Ding, Ying

AU - Wang, Xiuli

AU - Zhang, Wei

PY - 2023/11/1

Y1 - 2023/11/1

N2 - Eutectic SnPb ball grid array (BGA) solder joints were exposed to 60Co source gamma irradiation at a dose rate of 1 Gy(Si)/s from 0, 50, 100, 150 and 200 h in air. The effects of gamma irradiation on the microstructure evolution and mechanical properties of the solder joints were investigated. After irradiation, β-Sn and Pb on the surface of the solder joint was oxidized to SnO2, PbO and PbO2, and an oxide layer covered with Cu oxide was formed on the surface of the solder joint. The formation process and mechanism of the oxide layer were analyzed. Sn and Pb depletion holes and Cu depletion areas appeared on the solder joint surfaces after various irradiation time. SnO2 nanocrystals and Sn wrinkles appeared in the FIB specimen after irradiation. After 200 h of irradiation, the melting temperature of the SnPb eutectic solder alloy decrease, and the shear force value of the solder joint first increase and then decrease.

AB - Eutectic SnPb ball grid array (BGA) solder joints were exposed to 60Co source gamma irradiation at a dose rate of 1 Gy(Si)/s from 0, 50, 100, 150 and 200 h in air. The effects of gamma irradiation on the microstructure evolution and mechanical properties of the solder joints were investigated. After irradiation, β-Sn and Pb on the surface of the solder joint was oxidized to SnO2, PbO and PbO2, and an oxide layer covered with Cu oxide was formed on the surface of the solder joint. The formation process and mechanism of the oxide layer were analyzed. Sn and Pb depletion holes and Cu depletion areas appeared on the solder joint surfaces after various irradiation time. SnO2 nanocrystals and Sn wrinkles appeared in the FIB specimen after irradiation. After 200 h of irradiation, the melting temperature of the SnPb eutectic solder alloy decrease, and the shear force value of the solder joint first increase and then decrease.

KW - Gamma irradiation

KW - Oxidation of β-Sn to SnO

KW - SnPb eutectic solder joint

UR - https://www.scopus.com/pages/publications/85174676125

U2 - 10.1016/j.jmrt.2023.10.051

DO - 10.1016/j.jmrt.2023.10.051

M3 - 文章

AN - SCOPUS:85174676125

SN - 2238-7854

VL - 27

SP - 2929

EP - 2938

JO - Journal of Materials Research and Technology

JF - Journal of Materials Research and Technology

ER -

Effect of gamma irradiation on microstructural evolution and mechanical properties of SnPb eutectic solder joints

Abstract

Keywords

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