Al–Zn–Sn phase diagram – isothermal diffusion in ternary system

Sebaoun, A.; Vincent, David F.; Tréheux, D.

doi:10.1179/mst.1987.3.4.241

Cited by 33 publications

(9 citation statements)

References 2 publications

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“…In Figure 3 b), the authors' scheme is plotted as the red curve and (Al) + (Al") + L area includes both the existing yellow tinged area above the temperature of 278 °C and the white area (marked with a green arrow), which has been considered an area of the coexistence of (Al) + (Al") phases according to [3,11]. In Figure 3 d) all the existing phases are not complemented either.…”

Section: Assessment Of the Al-sn-zn Ternary Systemmentioning

confidence: 99%

“…Comparing the cross-sections at the temperatures of 300 °C and 280 °C, it is obvious that the cross-section at 290 °C is improperly plotted in term of the coexistence of phases. Sebaoun [11] studied the Al-Sn-Zn phase diagram using the reactive diffusion with preparing three diffusion pairs: Zn-10 wt.% Sn/Al, Zn-28 wt.% Al/Sn and Al-10 wt.% Sn/Zn (see lines g, h and i in Figure 1), which were annealed for a period of 3 up to 6 hours at the temperatures of 270, 280 and 290 °C. Following annealing, the specimens were water-quenched rapidly.…”

Section: Introductionmentioning

confidence: 99%

“…Other properties of the selected Al-Sn-Zn alloys, such as resistivity, density, magnetic susceptibility and wettability are tested as well. Figure 2 shows isothermal cross-sections through the ternary Al-Sn-Zn system at the temperatures of 300 °C to 270 °C according to [7][8][9][10][11]. The diagram in Figure 2 b) is beside the character of the existence of (Al) + (Al") phases area, which penetrate deep inside the diagram at the expense of threephase (Al) + (Al") + L area in the cross-section at 290 °C.…”

Section: Introductionmentioning

confidence: 99%

“…That's why the isothermal cross-section in Figure 2 b) has been explicated incorrectly. Isothermal sections in Al-Sn-Zn ternary system at temperatures 300 °C by [7,10] and at 290 °C, 280 °C a 270 °C by [11]. Vertical sections in Al-Sn-Zn ternary system a) red line "a" in Figure 1 [7,10]; b) green line"b" in Figure 1 [3]; c) light blue line "e" in Figure 1 [3]; d) orange line "f" in Figure 1 [11].…”

Section: Introductionmentioning

confidence: 99%

“…Isothermal sections in Al-Sn-Zn ternary system at temperatures 300 °C by [7,10] and at 290 °C, 280 °C a 270 °C by [11]. Vertical sections in Al-Sn-Zn ternary system a) red line "a" in Figure 1 [7,10]; b) green line"b" in Figure 1 [3]; c) light blue line "e" in Figure 1 [3]; d) orange line "f" in Figure 1 [11]. Figure 3 depicts 4 different isoplethic sections in the ternary Al-Sn-Zn system which has been marked out in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

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Contribution to the aluminum–tin–zinc ternary system

Drápala

Kostiuková

Losertová

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. The Sn-Zn-Al alloys are one of significant candidates in the proposal of alternative lead-free solders for higher temperature soldering. This paper deals with the study of the aluminum-tin-zinc system. Twenty Sn-Zn-Al alloys together with six binary Sn-Zn alloys were prepared and studied experimentally. Alloys were prepared from pure Sn, Zn and Al (melting and cooling in a vacuum resistance furnace). The specimens were studied metallographically including the micro-hardness measurements, complete chemical analysis (ICP-AES, OES), X-ray micro-analysis of alloys by SEM and EDX in order to determine the composition and identification of individual phases. Significant temperatures and enthalpies of phase transformations were determined by DTA. After long-term annealing of selected alloys in vacuum followed by quenching the structural and chemical microanalyses of the present phases and their limit concentrations were carried out. The achieved results were compared with the thermodynamic modelling of the ternary Sn-Zn-Al system (computer programs THERMOCALC, MTDATA, PANDAT and databases CALPHAD, COST). Electrical resistivity, density, magnetic susceptibility and wettability of Sn-Zn-Al solders were measured as well. IntroductionThe Sn-Zn-Al ternary system can be one of applicable alternative alloys to high lead content Pb-Sn solders, when the soldering process reaches temperatures as high as 300 °C. These solders can be used above all in automotive industry, in heat exchangers and in special applications. Tin -zinc alloys are used as solders for aluminum.The tin -zinc binary system diagram is of a eutectic type. The eutectic reaction proceeds at the temperature of 198.5 °C and the concentration of 85.1 at.% Sn. The zinc limit solubility in tin at this temperature corresponds to 0.6 at.% Zn, while on the other hand, the tin maximum solubility in hexagonal zinc is only 0.039 at.% Sn [1].The binary diagram of the aluminum -tin system [1, 2] is also of a eutectic type with a considerably limited solubility in the area of solid solution (Al) and tetragonal (Sn). The tin solubility in (Al) solid solution exhibits a retrograde character with a maximum of approximately 0.026 at.% Sn at the temperature of 625±20 °C [2].The Al-Zn equilibrium phase diagram [1] represents a eutectic system involving another reaction and the existence of a miscibility gap area in solid phase α (Al).The eutectic reaction proceeds at 381 °C closer to Zn side (the eutectic point corresponds to 88.7 at.% Zn). (Al) solid solution has an extended area of homogeneity interrupted at the temperature of 351.5 °C and the content of 39.5 at.% Zn. Between this temperature and the temperature of 277 °C, (Al) disintegration into two solid solutions occurs: (Al) with a lower Zn content and (Al") with a high zinc content (up to 59 at.%). The

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Section: Assessment Of the Al-sn-zn Ternary Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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