Deformation mechanics of sputtered copper layers during nanoindentation tests

The mechanical properties of the thin sputtered copper layer on the SiO2-coated silicon substrate is needed as part of the requirements in quantifying the reliability of the Through-Silicon Via (TSV) interconnects. In this respect, two different Cu coating layers, each from the different sputtering...

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Main Authors: M. A. A. Afripin, N. A. Fadil, M. Nasir Tamin
Format: Article
Language:English
Published: Universiti Malaysia Pahang Publishing 2020-03-01
Series:Journal of Mechanical Engineering and Sciences
Subjects:
Online Access:https://journal.ump.edu.my/jmes/article/view/2002
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author M. A. A. Afripin
N. A. Fadil
M. Nasir Tamin
author_facet M. A. A. Afripin
N. A. Fadil
M. Nasir Tamin
author_sort M. A. A. Afripin
collection DOAJ
description The mechanical properties of the thin sputtered copper layer on the SiO2-coated silicon substrate is needed as part of the requirements in quantifying the reliability of the Through-Silicon Via (TSV) interconnects. In this respect, two different Cu coating layers, each from the different sputtering process, are examined. A series of nanoindentation tests are performed on the Cu coating layer samples with indenter speeds ranging from 80 to 400 nm/s, and the indentation depths of 320 nm. The properties of elastic modulus, hardness and the hardening behavior of the Cu coating layers have been quantified. Results show that the coating with higher contamination of C at 8.41 wt. % displays a significant hardening and a peak load level, as reflected in the measured nanoindentation load-displacement curves. However, insignificant effect of the applied probe displacement speeds up to 400 nm/s on the resulting properties of the coating is registered. The Johnson-Cook constitutive equation adequately describes the strain rate-dependent hardening behavior of the Cu coating layer.
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spelling doaj.art-4b6977412f71448da91dacd3202bb97e2023-09-03T14:44:01ZengUniversiti Malaysia Pahang PublishingJournal of Mechanical Engineering and Sciences2289-46592231-83802020-03-011416504651310.15282/jmes.14.1.2020.25.0510Deformation mechanics of sputtered copper layers during nanoindentation testsM. A. A. Afripin0N. A. Fadil1M. Nasir Tamin2School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, MalaysiaSchool of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, MalaysiaFaculty of Mechanical Engineering, Universiti Teknologi Malaysia, Johor Bahru, MalaysiaThe mechanical properties of the thin sputtered copper layer on the SiO2-coated silicon substrate is needed as part of the requirements in quantifying the reliability of the Through-Silicon Via (TSV) interconnects. In this respect, two different Cu coating layers, each from the different sputtering process, are examined. A series of nanoindentation tests are performed on the Cu coating layer samples with indenter speeds ranging from 80 to 400 nm/s, and the indentation depths of 320 nm. The properties of elastic modulus, hardness and the hardening behavior of the Cu coating layers have been quantified. Results show that the coating with higher contamination of C at 8.41 wt. % displays a significant hardening and a peak load level, as reflected in the measured nanoindentation load-displacement curves. However, insignificant effect of the applied probe displacement speeds up to 400 nm/s on the resulting properties of the coating is registered. The Johnson-Cook constitutive equation adequately describes the strain rate-dependent hardening behavior of the Cu coating layer.https://journal.ump.edu.my/jmes/article/view/2002hardening curvehardnessnanoindentation testsputtered copper coatingyoung’s modulus
spellingShingle M. A. A. Afripin
N. A. Fadil
M. Nasir Tamin
Deformation mechanics of sputtered copper layers during nanoindentation tests
Journal of Mechanical Engineering and Sciences
hardening curve
hardness
nanoindentation test
sputtered copper coating
young’s modulus
title Deformation mechanics of sputtered copper layers during nanoindentation tests
title_full Deformation mechanics of sputtered copper layers during nanoindentation tests
title_fullStr Deformation mechanics of sputtered copper layers during nanoindentation tests
title_full_unstemmed Deformation mechanics of sputtered copper layers during nanoindentation tests
title_short Deformation mechanics of sputtered copper layers during nanoindentation tests
title_sort deformation mechanics of sputtered copper layers during nanoindentation tests
topic hardening curve
hardness
nanoindentation test
sputtered copper coating
young’s modulus
url https://journal.ump.edu.my/jmes/article/view/2002
work_keys_str_mv AT maaafripin deformationmechanicsofsputteredcopperlayersduringnanoindentationtests
AT nafadil deformationmechanicsofsputteredcopperlayersduringnanoindentationtests
AT mnasirtamin deformationmechanicsofsputteredcopperlayersduringnanoindentationtests