Marliza Mostapha @ Zakaria

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Void distributions in Sn-3.0Ag-0.5Cu (SAC305) composite lead free solder subjected to thermal ageing using acoustic micro imaging technique

(IOP Publishing, 2020)
Nur Syahirah Mohamad Zaimi
;
Mohd Arif Anuar Mohd Salleh
;
Mohd. Mustafa Al Bakri Abdullah
;
Marliza Mostapha @ Zakaria
;
M S Baltatu
;
R Badlishah Ahmad

The formations of the voids in SAC305 lead free solder and SAC305 with additions of kaolin geopolymer ceramics were studied. The composite solders were fabricated by using powder metallurgy with microwave sintering method. The samples were sandwiched between two copper substrates and reflowed in a reflow oven and aged at 125°C for 0 and 7 days. The acoustic micro imaging was used to analyse the distributions of voids in the solder joints of SAC305 and SAC305 with additions of kaolin geopolymer ceramics. Results shows that, rhe void in SAC305 are larger in size and numbers as compared to SAC305 with additions of kaolin geopolymer ceramics for both reflowed and aged conditions.
Impact of thermal ageing and multiple reflow on lead free composite solder : a short review

(IOP Publishing, 2020)
Nur Syahirah Mohamad Zaimi
;
Mohd Arif Anuar Mohd Salleh
;
Mohd. Mustafa Al Bakri Abdullah
;
Marliza Mostapha @ Zakaria
;
Romisuhani Ahmad

This paper reviews the impact of the thermal ageing and multiple reflow to the intermetallic compound (IMC) layer and mechanical performance of lead free solder reinforced with various reinforcements. Based on available literatures it had been proved that, the IMC layer and mechanical properties can be affected with the exposure of different temperatures and time. Besides that, the incorporation of the reinforcement in the matrix of solder alloys could improve the thickness of IMC layer and strength of the solder joints although it had been subjected to thermal ageing and multiple reflow cycles as compared to unreinforced solder. Therefore, the composite solder system could be possibly applied and adapted in current electronic devices even with the exposure of high temperatures.

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Marliza Mostapha @ Zakaria

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Marliza Mostapha @ Zakaria

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