Wettability, Electrical and Mechanical Properties of 99.3Sn-0.7Cu/Si3N4 Novel Lead-Free Nanocomposite Solder

2011 ◽  
Vol 277 ◽  
pp. 106-111 ◽  
Author(s):  
Mohd Arif Anuar Mohd Salleh ◽  
Muhammad Hafiz Hazizi ◽  
Zainal Arifin Ahmad ◽  
Kamarudin Hussin ◽  
Khairel Rafezi Ahmad
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Solder Alloy ◽  
Base Alloy ◽  
Lead Free ◽  
Lead Free Solder ◽  
Free Solder ◽  
Nano Size ◽  
Nanocomposite Solder ◽  
Powder Metallurgy Route

A nanocomposite solder alloy with 99.3Sn-0.7Cu base alloy was successfully fabricated using the powder metallurgy route which consists of blending, compaction and sintering. Varying amount of nano size silicon nitride particulates were introduced as reinforcements to obtain a novel lead-free nanocomposite solder alloy. Following fabrication, the sintered nanocomposite solder were cut into thin solder disc and were analyzed in terms of their wettability, electrical and mechanical properties. Wettability, electrical and mechanical properties of the nanocomposite solder were compared to 99.3Sn-0.7Cu and 96.3Sn-3.0Ag-0.5Cu lead-free solder which were fabricated with the same method using powder metallurgy route. Wettability property of the nanocomposite solder was found to be in the accepted range with wettability angle below 45° similar to 99.3Sn-0.7Cu and 96.3Sn-3.0Ag-0.5Cu lead-free solder. Besides wettability, the results of electrical and mechanical properties analysis showed that additions of nano size Si3N4 had enhanced the strength and electrical conductivity of nanocomposite solder comparing to 99.3Sn-0.7Cu and 96.3Sn-3.0Ag-0.5Cu lead-free solder.

Effect of Cooling Rate on the Microstructural and Mechanical Properties of Sn-0.3Ag-0.7Cu-0.05Ni Solder Alloy

2017 ◽  
Vol 751 ◽  
pp. 9-13
Author(s):  
Kogaew Inkong ◽  
Phairote Sungkhaphaitoon
Keyword(s):  
Mechanical Properties ◽  
Cooling Rate ◽  
Solder Alloy ◽  
Testing Machine ◽  
Optical Microscope ◽  
Lead Free ◽  
Lead Free Solder ◽  
Cooling Systems ◽  
Lead Free Solder Alloy ◽  
Free Solder

The effect of cooling rate on the microstructural and mechanical properties of Sn-0.3Ag-0.7Cu-0.05Ni lead-free solder alloy was studied. The microstructure of specimens was characterized by using an optical microscope (OM) and an energy dispersive X-ray spectroscopy (EDX). The mechanical properties were performed by using a universal testing machine (UTM). The results showed that the cooling rate of water-cooled specimens was about 2.37 °C/s and the cooling rate of mold-cooled specimens was about 0.05 °C/s. To compare the different cooling rates, it was found that the grain size of water-cooled specimens was finer than that of the mold-cooled specimens, this resulted in an increment of mechanical properties of solder alloy. A higher tensile strength (33.10 MPa) and a higher elongation (34%) were observed when water-cooled and mold-cooled systems were used, respectively. The microstructure of Sn-0.3Ag-0.7Cu-0.05Ni lead-free solder alloy solidified by both cooling systems exhibited three phases: β-Sn, Ag3Sn and (Cu,Ni)6Sn5 IMCs.

Microstructure, interfacial IMC and mechanical properties of Sn–0.7Cu–xAl (x=0–0.075) lead-free solder alloy

2015 ◽  
Vol 67 ◽  
pp. 209-216 ◽  
Author(s):  
Li Yang ◽  
Yaocheng Zhang ◽  
Jun Dai ◽  
Yanfeng Jing ◽  
Jinguo Ge ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Solder Alloy ◽  
Lead Free ◽  
Lead Free Solder ◽  
Lead Free Solder Alloy ◽  
Free Solder

Intermetallic Study on the Modified Sn-3.5Ag-1.0Cu-1.0Zn Lead Free Solder

2016 ◽  
Vol 857 ◽  
pp. 3-7 ◽  
Author(s):  
Ramani Mayappan ◽  
Nur Nadiah Zainal Abidin ◽  
Noor Asikin Ab Ghani ◽  
Iziana Yahya ◽  
Norlin Shuhaime
Keyword(s):  
Electron Microscope ◽  
Powder Metallurgy ◽  
Joint Strength ◽  
Lead Free ◽  
Environmental Concerns ◽  
Lead Free Solder ◽  
Free Solder ◽  
Lead Free Solders ◽  
Powder Metallurgy Route ◽  
Scanning Electron

Due to environmental concerns, lead-free solders were introduced to replace the lead-based solders in microelectronics devices technology. Although there are many lead-free solders available, the Sn-Ag-Cu solders are considered the best replacement due to their good wettability and joint strength. Although the Sn-Ag-Cu solders are accepted widely, but there are still some room for improvement. In this study, 1wt% Zn, which can be considered high percentage for a dopant, was added into the solder via powder metallurgy route. The effects of adding this dopant into the Sn-3.5Ag-1.0Cu solder on the interface intermetallic and thickness were investigated. The intermetallics phases formed were observed under Scanning Electron Microscope (SEM) and their thicknesses were measured. The SEM results showed the presence of Cu6Sn5, Cu3Sn and (Cu,Zn)6Sn5 intermetallics. It can be concluded that Zn behaved as retarding agent and significantly retarded the growth of Cu-Sn intermetallics.

Microstructural Observation and Phase Analysis of Sn-Cu-Ni (SN100C) Lead Free Solder with Addition of Micron-Size Silicon Nitride (Si3N4) Reinforcement

2015 ◽  
Vol 754-755 ◽  
pp. 518-523 ◽  
Author(s):  
Mohd Izrul Izwan Ramli ◽  
Norainiza Saud ◽  
Mohd Arif Anuar Mohd Salleh ◽  
Mohd Nazree Derman ◽  
Rita Mohd Said ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Powder Metallurgy ◽  
Phase Analysis ◽  
Solder Alloy ◽  
Composite Solder ◽  
Lead Free ◽  
Lead Free Solder ◽  
Microstructural Observation ◽  
Micron Size ◽  
Free Solder

The effect of micron-size silicon nitride (Si3N4) particles additions, up to 1.0 wt. % on Sn-Cu-Ni (SN100C) solder alloy was investigated. Sn-Cu-Ni composite solder were prepared via powder metallurgy (PM) technique. Different percentages of Si3N4(0, 0.25, 0.5, 0.75 and 1.0 wt. %) were added into the alloy. Result revealed that reinforcement was well distributed between the grain boundaries which could positively affect the properties of the composite solder.

Effect of Aluminium Addition on Microstructure and Microhardness of Sn-0.7Cu-xAl Lead-Free Solder Alloy

2015 ◽  
Vol 754-755 ◽  
pp. 166-170 ◽  
Author(s):  
Nurul Razliana Abdul Razak ◽  
Nisrin Adli ◽  
Norainiza Saud ◽  
Sayyidah Amnah Musa
Keyword(s):  
Powder Metallurgy ◽  
Grain Boundaries ◽  
Solder Alloy ◽  
Solder Matrix ◽  
Lead Free ◽  
Lead Free Solder ◽  
Weight Percentage ◽  
Aluminium Addition ◽  
Lead Free Solder Alloy ◽  
Free Solder

The effect of Al particles addition on the microstructure and microhardness of Sn-0.7Cu-xAl lead-free solder was systematically investigated. The Sn-0.7Cu-xAl solder alloy was successfully fabricated via powder metallurgy (PM) method which consists of mixing, compaction and sintering. Results show that the crystallization of Sn occurs in two different modifications; α-Sn and β-Sn, where the formation of β-Sn able to reinforce the solder matrix. The Al particles also distributed homogeneously along the grain boundaries. The microhardness was improved by 19% as the weight percentage of the Al particles increased up to 1.0 wt.%.

Effect of TiO2 Reinforcement on Microstructure and Microhardness of Low-Silver SAC107 Lead-Free Solder Composite Solder

2014 ◽  
Vol 803 ◽  
pp. 273-277 ◽  
Author(s):  
Norhayanti Mohd Nasir ◽  
Norainiza Saud ◽  
Mohd Nazree Derman ◽  
Arif Anuar Mohd Salleh ◽  
Mohd Izrul Izwan Ramli ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Powder Metallurgy ◽  
Solder Alloy ◽  
Composite Solder ◽  
Lead Free ◽  
Lead Free Solder ◽  
Physical Performances ◽  
Free Solder ◽  
Sac Solder ◽  
Solder Composite

This research has investigated the physical performances of low-silver Sn-Ag-Cu (SAC) lead-free composite solder reinforced with titanium dioxide (TiO2). The SAC/TiO2 composite solder were fabricated via powder metallurgy (PM) technique. The five different composition chosen were 0, 0.25, 0.5, 0.75, and 1.0. The results showed that distribution of TiO2 along the grain boundaries has increased the hardness of the SAC/TiO2 composite solders compared to monolithic SAC solder alloy.

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