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Solid solutions based on the M5X3 binary compounds in the M-{Si, Ge}-Sb ternary systems (M - Ti, Zr, Y; X - Si, Ge, Sb)

Kozlov A. Yu., Pavlyuk V. V.

Prace Naukowe. Chemia / Wyższa Szkoła Pedagogiczna w Częstochowie

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2003

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Vol. 8

23--28

EN

The solid solutions based on M5X3 binary compounds in Ti-{Si, Ge}-Sb, Zr-Si-Sb and Y-{Si, Ge}-Sb ternary systems at 400°C were found (str. Type Mn5Si3, space group P63/mcm). The crystal structure of Ti5Si2.76Sb0.24 (a=0.7500 nm, c=0.5182 nm) and Ti5Ge2.26Sb0.74(a=0.7604(5) nm, c=0.5260(3) nm) was investigated by single-crystal X-ray analysis. Continuous solid solutions between Y5Si3-Y5Sb3 and Y5Ge3-Y5Sb3 compounds were investigated by powder X-ray analysis. The solid solution Zr5SixSb3+y (x=0-1, y=0-1) is formed by interstitial of atoms of Si in triqonal antiprisms which are formed by Zr atoms in 6g sites in Zr5Sb3 (str. type Mn5Si3, space group P63/mcm) binary compound or substitution of atoms of Sb in 2b sites by Si atoms in Zr5Sb4 (str. type Ti5Ga4, space group P63/mcm) binary compound.

2

Phase Equilibria in Y--Ag--P and nd--Ag--P Systems

Demchyna R., Chykhrij S. I., Sadkova O. V., Kuz'ma Y. B.

Polish Journal of Chemistry

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2002

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Vol. 76 / nr 6

795-800

EN

Phase equilibria were established in the Y-Ag-P and Nd-Ag-P ternary systems up to 80 at.% of P at 400°C. The isothermal sections have been built basing on X-ray phase analysis.

3

Lead-free soldering materials.

Moser Z., Gąsior W., Pstruś J.

Inżynieria Materiałowa

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2002

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R. XXIII, nr 2

65-69

EN

One of the trends in the studies on Pb-free solders is to correlate surface tension obtained both experimentaly and by modelling and wettability by means of Young-Dupre relation. In the previous studies surface tension has been measured with the maximum bubble pressure method for pure liquid components: Sn, Bi, In, Ag, Pb; for binary liquid alloys: Pb-Sn, Ag-Sn (the most promising candidate to replace Pb-Sn eutectic or near-eutectic alloys), Ag-In, In-Sn, Bi-Sn and for the eutectic Ag-Sn alloy with Zn, In, Bi or Cu additions (ternary systems). Surface tension measurements were performed in wide range of temperature, and the range of concentration depending upon the investigated system. For binary alloys measurements were performed in the entire concentration range, and only for small ternary additions to the eutectic (Sn-3,5 weight % Ag) alloys to confirm the change of the surface tension in relation to the binary eutectic. Recently, studies of the Ag-Sn-In and Ag-Sn-Bi ternary systems have been completed, and the influence of the Bi and In additions on the surface tension of (Sn-Ag)eut+(Bi, In) alloys has been discussed regarding the wetting tests.

PL

Jednym z kierunków badań nad bezołowiowymi materiałami do lutowania jest określanie korelacji pomiędzy napięciem powierzchniowym z pomiarów eksperymentalnych i z modelowania opartego o własności termodynamiczne rozpatrywanych stopów a zwilżalnością z wykorzystaniem zależności Younga-Dupre. W naszym Instytucie zostały przerowadzone pomiary napięcia powierzchniowego dla ciekłych metali: Sn, Bi, In, Ag, oraz Pb; dla ciekłych dwuskładnikowych stopów: Pb-Sn, Ag-Sn (najpoważniejszy kandydat do zastąpienia stopów Pb-Sn eutektycznych lub około-eutektycznych), Ag-In, In-Sn oraz Bi-Sn a także stopów (Ag-Sn)eut z dodatkami takich metali jak Zn, In, Bi oraz Cu. Pomiary napięcia powierzchniowego prowadzono w szerokim zakresie temperatury, a zakresy stężeń zależały od charakteru badanego układu. Dla stopów dwuskładnikowych badania prowadzono w całym zakresie stężeń, a w przypadku układów trójskładnikowych pomiary ograniczono do stopów zawierających niewielkie ilości cytowanych wcześniej dodatków metali do eutektyki dwuskładnikowej Ag-Sn. Celem tych badań było potwierdzenie zmian napięcia powierzchniowego w stosunku do eutektyki podwójnej Sn-Ag i skorelowanie go z temperaturą topnienia otrzymaną z odrębnych informacji pochodzących z wykresów fazowych. Dotychczas zostały zakończone badania dla dwóch trójskładnikowych stopów: Ag-Sn-In oraz Ag-Sn-Bi, w których przeanalizowano zmiany napięcia powierzchniowego związane z dodatkami indu lub bizmutu do dwuskładnikowej eutektyki Ag-Sn, a prezentowanymi w literaturze wynikami badań nad zwilżalnością.

4

Peculiarities of Components' Interaction in Rare Earth-Transition Metal-Silicon Systems in R(MxSi1-x)2-y Composition Region

Gladyshevsky E., Bodak O. I., Gorelenko Y. K., Yarovetz V. I.

Polish Journal of Chemistry

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2001

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Vol. 75, nr 5

617--622

EN

The explanation of ternary compounds, forming with AlB2 structure type in the rare earth metal-transition metal-silicon systems, implements on base of analysis of the dependence of the valence-electron concentration versus the kind of the transition metals in their solid solutions in the binary compounds with AlB2, _-ThSi2, and _-GdSi2 structure types appropriate to the rare earth-silicon systems. There is shown that the silicon content (as the electron donor) during formation of the ternary compounds with AlB2 structure type is dependent on the kind of transition metal and this content is decreased in the series of the compounds with Fe, Co, Ni, and Cu consecutively. The experimental data on concentrational intervals of the stability ranges of these ternary compounds are proposed to the qualitative evaluation of the effective valency of the transition metal atoms.

5

Ce-Ag-P System

Demchyna R., Chykhrij S., Kuz'ma Y.

Polish Journal of Chemistry

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2000

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Vol. 74, nr 1

39-44

EN

Phase equilibria were established in the Ce-Ag-P ternary system up to 80 at.% of P and the CeP-CeP2-Ag region for isothermal sections at 400 C and 800 C, respectivity. The isothermal sections have been formed basing on X-ray analysis.

6

Interactions Between the Components in the Ti-Cu-Sn System at 670 K

Koblyuk N., Akselrud L., Skolozdra R.

Polish Journal of Chemistry

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1999

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Vol. 73, nr 9

1465-1471

EN

The isothermal section of the phase diagram of the Ti-Cu-Sn system has been constructed at 670 K and phase equilibria at this temperature were determined. A new TiCuSn ternary compound was obtained and its crystal structure was studied. Electrical resistivity of TiCuSn has been measured, exhibiting metallic conductivity.

7

Interactions between the components in the Zr-Cu-In system at 870 K

Gulay L.D., Zaremba V.I., Kalychak Ya. M., Stępień-Damm J., Kobluck N.O.

Polish Journal of Chemistry

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1998

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Vol. 72, nr 3

511-513

EN

The interactions between components in Zr-Cu-In ternary system at 870 K have been studied by X-ray and microstructure analyses. One earlier known (ZrCu2In with MnCu2Al-type) and four inknown ternary compounds have been found. Crystal structure of all new compounds are determined: ZrCu5-xInx (x=0.3-1.3)-AuBe5 type of structure (space group F43m, a=6.955-7.042(2)A; ZrCuxIn3-x(x=0.35-0.80)-AuCu3 type of structure (space group Pm3m), a=4.3281-4.3079(1)A; Zr2Cu2In-Mo2FeB2type of structure (space group P4/mbm),a=7.194(2)A, c=3.410(4)A; Zr5CuIn3-Hf5CuSn3 structure type (space group P6(3)/mcm, a=8.671(2)A, c=5.917(1)A).