A Reliability Study of Nanoparticles Reinforced Composite Lead-Free Solder

被引：21

作者：

Chen, Si ^{[1
,2
]}

Zhang, Lili ^{[1
,2
]}

Liu, Johan ^{[1
,2
,3
,4
]}

Gao, Yulai ^{[5
]}

Zhai, Qijie ^{[5
]}

机构：

[1] Shanghai Univ, Key Lab Adv Display & Syst Applicat, Shanghai 200072, Peoples R China

[2] Shanghai Univ, SMIT Ctr, Sch Automat & Mech Engn, Shanghai 200072, Peoples R China

[3] Chalmers Univ Technol, SMIT Ctr, SE-41296 Gothenburg, Sweden

[4] Chalmers Univ Technol, Bionano Syst Lab, Dept Microtechnol & Nanosci, SE-41296 Gothenburg, Sweden

[5] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200072, Peoples R China

来源：

MATERIALS TRANSACTIONS | 2010年 / 51卷 / 10期

基金：

美国国家科学基金会;

关键词：

composite solder; nanoparticles; shear strength; thermal cycling; fracture mode;

D O I：

10.2320/matertrans.MJ201002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work looks at the development and investigation of a reinforced composite solder with low melting point The composite solder was prepared by adding Sn 3 0Ag 0 5Cu nanoparticles Into Sn 58BI solder paste 1 he Sn 3 0Ag 0 5Cu nanoparticles were manufactured using a self developed Consumable electrode Direct Current Arc (CDCA) technique The test FR 4 Printed Circuit Board (PCB) with Cu pad and Electroless Nickel Immersion Gold (ENIG) surface finish were fabricated and fifty SR1206 chip resistors were mounted on pads of test PCB with the reinforced composite solder paste by using conventional surface mount technology The differential scanning calorimetry (DSC) was used to analyze the constituent of the composite solder Joint after reflow A scanning electron microscope (SEM) transmission electron microscope (TEM) and optical microscope (OM) were employed in order to observe the morphology of nanoparticles the microstructure of reinforced composite solder Joint the crack initiation and propagation in solder Joint and the fracture mode after shear test The thermal cycling (TC) was carried out with a temperature range of 40 degrees C and 125 C The contract resistance of the solder Joint was measured during thermal cycling and the shear test of solder Joints was performed before and after 500 thermal cycles After the shear test all fracture surfaces were inspected to identify the fracture mode of the composite solder joint The results of the experiments detailed in this work indicate that the shear strength of the composite solder increased 2 times in comparison to Sn 58B(1) Meanwhile the thermomechanical fatigue (TMF) resistance of the composite solder with 1 mass% nanoparticles was 16 times stronger than Sn 58BI and 4 times stronger than Sn 3 0Ag 0 5Cu However the tendency of forming micro cracks between nanoparticles and solder matrix and the fracture within solder was increased for solder joints with more than 3 mass% nanoparticles after thermal cycling [doi 10.2320/matertrans.MJ201002].

引用

页码：1720 / 1726

页数：7

共 17 条

[1]

GAIN AK, 2008, P 2 IEEE CPMT C EL S, P1291

[2]

Guan WB, 2006, ESTC 2006: 1ST ELECTRONICS SYSTEMINTEGRATION TECHNOLOGY CONFERENCE, VOLS 1 AND 2, PROCEEDINGS, P7

[3]

Hsiao LY, 2006, ICEPT: 2006 7TH INTERNATIONAL CONFERENCE ON ELECTRONICS PACKAGING TECHNOLOGY, PROCEEDINGS, P358

[4] Synthesis and thermal and wetting properties of Tin/Silver alloy nanoparticles for low melting point lead-free solders [J].