Effect of gamma radiation on micromechanical hardness of lead-free solder joint

Wilfred Paulus, Irman Abdul Rahman, Azman Jalar @ Jalil, Insan Kamil, Wan Yusmawati Wan Yusoff, Maria Abu Bakar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Lead-free solders are important material in nano and microelectronic surface mounting technology for various applications in bio medicine, environmental monitoring, spacecraft and satellite instrumentation. Nevertheless solder joint in radiation environment needs higher reliability and resistance to any damage caused by ionizing radiations. In this study a lead-free 99.0Sn0.3Ag0.7Cu wt.% (SAC) solder joint was developed and subjected to various doses of gamma radiation to investigate the effects of the ionizing radiation to micromechanical hardness of the solder. Averaged hardness of the SAC joint was obtained from nanoindentation test. The results show a relationship between hardness values of indentations and the increment of radiation dose. Highest mean hardness, 0.2290 ± 0.0270 GPa was calculated on solder joint which was exposed to 5 Gray dose of gamma radiation. This value indicates possible radiation hardening effect on irradiated solder. The hardness gradually decreased to 0.1933 ± 0.0210 GPa and 0.1631 ± 0.0173 GPa when exposed to doses 50 and 500 gray respectively. These values are also lower than the hardness of non irradiated sample which was calculated as 0.2084 ± 0.0.3633 GPa indicating possible radiation damage and needs further related atomic dislocation study.

Original languageEnglish
Title of host publication2015 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2015 Postgraduate Colloquium
PublisherAmerican Institute of Physics Inc.
Volume1678
ISBN (Electronic)9780735413252
DOIs
Publication statusPublished - 25 Sep 2015
Event2015 Postgraduate Colloquium of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology, UKM FST 2015 - Selangor, Malaysia
Duration: 15 Apr 201516 Apr 2015

Other

Other2015 Postgraduate Colloquium of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology, UKM FST 2015
CountryMalaysia
CitySelangor
Period15/4/1516/4/15

Fingerprint

solders
hardness
gamma rays
dosage
ionizing radiation
radiation hardening
environmental monitoring
radiation
mounting
nanoindentation
indentation
radiation damage
medicine
microelectronics
spacecraft
damage

Keywords

  • gamma radiation
  • hardness
  • nanoindentaion
  • SAC

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Paulus, W., Abdul Rahman, I., Jalar @ Jalil, A., Kamil, I., Yusoff, W. Y. W., & Bakar, M. A. (2015). Effect of gamma radiation on micromechanical hardness of lead-free solder joint. In 2015 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2015 Postgraduate Colloquium (Vol. 1678). [040018] American Institute of Physics Inc.. https://doi.org/10.1063/1.4931275

Effect of gamma radiation on micromechanical hardness of lead-free solder joint. / Paulus, Wilfred; Abdul Rahman, Irman; Jalar @ Jalil, Azman; Kamil, Insan; Yusoff, Wan Yusmawati Wan; Bakar, Maria Abu.

2015 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2015 Postgraduate Colloquium. Vol. 1678 American Institute of Physics Inc., 2015. 040018.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Paulus, W, Abdul Rahman, I, Jalar @ Jalil, A, Kamil, I, Yusoff, WYW & Bakar, MA 2015, Effect of gamma radiation on micromechanical hardness of lead-free solder joint. in 2015 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2015 Postgraduate Colloquium. vol. 1678, 040018, American Institute of Physics Inc., 2015 Postgraduate Colloquium of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology, UKM FST 2015, Selangor, Malaysia, 15/4/15. https://doi.org/10.1063/1.4931275
Paulus W, Abdul Rahman I, Jalar @ Jalil A, Kamil I, Yusoff WYW, Bakar MA. Effect of gamma radiation on micromechanical hardness of lead-free solder joint. In 2015 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2015 Postgraduate Colloquium. Vol. 1678. American Institute of Physics Inc. 2015. 040018 https://doi.org/10.1063/1.4931275
Paulus, Wilfred ; Abdul Rahman, Irman ; Jalar @ Jalil, Azman ; Kamil, Insan ; Yusoff, Wan Yusmawati Wan ; Bakar, Maria Abu. / Effect of gamma radiation on micromechanical hardness of lead-free solder joint. 2015 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2015 Postgraduate Colloquium. Vol. 1678 American Institute of Physics Inc., 2015.
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abstract = "Lead-free solders are important material in nano and microelectronic surface mounting technology for various applications in bio medicine, environmental monitoring, spacecraft and satellite instrumentation. Nevertheless solder joint in radiation environment needs higher reliability and resistance to any damage caused by ionizing radiations. In this study a lead-free 99.0Sn0.3Ag0.7Cu wt.{\%} (SAC) solder joint was developed and subjected to various doses of gamma radiation to investigate the effects of the ionizing radiation to micromechanical hardness of the solder. Averaged hardness of the SAC joint was obtained from nanoindentation test. The results show a relationship between hardness values of indentations and the increment of radiation dose. Highest mean hardness, 0.2290 ± 0.0270 GPa was calculated on solder joint which was exposed to 5 Gray dose of gamma radiation. This value indicates possible radiation hardening effect on irradiated solder. The hardness gradually decreased to 0.1933 ± 0.0210 GPa and 0.1631 ± 0.0173 GPa when exposed to doses 50 and 500 gray respectively. These values are also lower than the hardness of non irradiated sample which was calculated as 0.2084 ± 0.0.3633 GPa indicating possible radiation damage and needs further related atomic dislocation study.",
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