Sains Malaysiana 45(8)(2016): 1275–1279

 

Nanoindentation Approach on Investigating Micromechanical Properties of Joining from Green Solder Materials

(Kaedah Perlekukan Nano dalam Mengkaji Sifat Mikromekanik Sambungan Bahan Aloi Pateri Hijau)

 

MARIA ABU BAKAR1, AZMAN JALAR1,2*, ABDUL RAZAK DAUD2, ROSLINA ISMAIL1,

NUR AZIDA CHE LAH3 & NAJIB SAEDI IBRAHIM4

 

1Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia

43600 Bangi, Selangor Darul Ehsan, Malaysia

 

2School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia

43600 Bangi, Selangor Darul Ehsan, Malaysia

 

3Fabrication & Joining Section, Universiti Kuala Lumpur Malaysia France Institute, Section 14, Jalan Teras Jernang, 43650 Bandar Baru Bangi, Selangor Darul Ehsan, Malaysia

 

4Redring Solder (M) Sdn. Bhd., Lot17486, Jalan Dua, Taman Selayang Baru, 68100 Batu Caves, Selangor Darul Ehsan, Malaysia

 

Received: 20 April 2015/Accepted: 12 November 2015

 

ABSTRACT

This work investigates the micromechanical properties of Sn96.5Ag3.0Cu (SAC 305) on Immersion Tin (ImSn) surface finished after subjected to high temperature storage (HTS) at 180°C for 200 to 1000 h period. Nanoindentation approach was used to measure the micromechanical properties of the solder. It was observed that the indentation depth and plastic depth were increased and a clear trend of decreasing hardness as opposed to the increasing reduced modulus as the HTS time lengthened. The plasticity-asscociated properties become stronger meanwhile the elasticity-associated properties decreased with the HTS time. These findings indicate that nanoindentation approach can clearly determine the plastic and elastic deformation occurance throughout the test.

 

Keywords: Lead-free solder; micromechanical properties; nanoindententation

 

 

ABSTRAK

Penyelidikan ini mengkaji sifat mikromekanik Sn96.5Ag3.0Cu (SAC 305) pada substrat dengan kemasan permukaan rendaman timah (ImSn) selepas didedahkan pada penyimpanan suhu tinggi (HTS) pada suhu 180°C selama 200 hingga 1000 jam. Kaedah perlekukan nano digunakan untuk mengukur sifat mikromekanik aloi pateri. Didapati bahawa kedalaman perlekukan dan plastik meningkat dan terdapat tren kekerasan yang jelas menurun bertentangan dengan modulus terkurang dengan pemanjangan masa HTS. Sifat berkaitan plastik menjadi semakin kuat dan sebaliknya bagi sifat elastik yang menurun dengan pemanjangan masa HTS. Keputusan menunjukkan pendekatan menggunakan kaedah perlekukan nano dapat mengenal pasti kewujudan canggaan plastik dan elastik sepanjang uji kaji.

 

Kata kunci: Pateri bebas plumbum; perlekukan nano; sifat mikromekanik

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*Corresponding author; email: azmn@ukm.edu.my

 

 

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