2023
DOI: 10.1016/j.heliyon.2023.e12952
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Microstructure and morphology of the soldering interface of Sn–2.0Ag–1.5Zn low Ag content lead-free solder ball and different substrates

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Cited by 4 publications
(4 citation statements)
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“…As a result of the reaction, the amount of zinc in the solder alloy is greatly reduced [56]. Also, the formation of Cu 5 Zn 8 IMC was confirmed by Xiao et al [57]. This finding might explain that the γ-Cu 5 Zn 8 IMC forms as more copper atoms diffuse towards the ε-CuZn 5 precipitate through the aging time increment.…”
Section: Resultsmentioning
confidence: 72%
“…As a result of the reaction, the amount of zinc in the solder alloy is greatly reduced [56]. Also, the formation of Cu 5 Zn 8 IMC was confirmed by Xiao et al [57]. This finding might explain that the γ-Cu 5 Zn 8 IMC forms as more copper atoms diffuse towards the ε-CuZn 5 precipitate through the aging time increment.…”
Section: Resultsmentioning
confidence: 72%
“…6 shows the results of TEM analysis of the interface between the Sn-1.5Ag-2.0Zn alloy solder and the polycrystalline copper substrate at 160 °C for 300 h. The selected electron diffraction pattern in the A region corresponds to Cu 6 Sn 5 with a crystalline band axis of [0 1 0]. The selected electron diffraction pattern in the C region corresponds to Cu 6 Sn 5 with a crystalline band axis of [ [2] , [3] , [4] , [5] , [6] , [7] , [8] , [9] , [10] , [11] , [12] ], and the selected electron diffraction pattern in the B region corresponds to Cu 5 Zn 8 with a crystalline band axis of [0−1 0]. It can be found that the rod-shaped particles A-phase Cu 6 Sn 5 and B-phase Cu 5 Zn 8 are grown in polycrystalline copper substrate nucleation.…”
Section: Results and Analysismentioning
confidence: 99%
“…It has been commonly used in the field of electronic packaging. However, the lead decomposed from tin-lead solder in electronic products pollutes the environment and threatens human health [ [1] , [2] , [3] , [4] , [5] , [6] ]. Moreover, the poor thermal workability and creep resistance of tin-lead solder cannot meet the requirements of packaging technology development.…”
Section: Introductionmentioning
confidence: 99%
“…At present, the solder used in PCB manufacture is mainly lead-free solder [5][6][7][8][9][10]. The most commonly used lead-free solders mainly include Sn-Ag [11][12][13][14], Sn-Cu [15][16][17][18], Sn-Zn [19][20][21][22], and Sn-Ag-Cu (SAC) [23][24][25].…”
Section: Introductionmentioning
confidence: 99%