scholarly journals Enthalpies of mixing of liquid systems for lead free soldering: Al–Cu–Sn system

2011 ◽  
Vol 43 (11) ◽  
pp. 1612-1622 ◽  
Author(s):  
Hans Flandorfer ◽  
Meryem Rechchach ◽  
A. Elmahfoudi ◽  
László Bencze ◽  
Arkadij Popovič ◽  
...  
Keyword(s):  
Lead Free ◽  
Enthalpies Of Mixing ◽  
Liquid Systems

scholarly journals Enthalpies of mixing of liquid systems for lead free soldering: Co–Sb–Sn

2012 ◽  
Vol 23 ◽  
pp. 128-133 ◽  
Author(s):  
A. Elmahfoudi ◽  
A. Sabbar ◽  
H. Flandorfer
Keyword(s):  
Lead Free ◽  
Enthalpies Of Mixing ◽  
Liquid Systems

Enthalpies of mixing of liquid systems for lead-free soldering: Cu–Sb–Sn system

2011 ◽  
Vol 512 (1-2) ◽  
pp. 217-224 ◽  
Author(s):  
Dominika Jendrzejczyk-Handzlik ◽  
Meryem Rechchach ◽  
Wojciech Gierlotka ◽  
Herbert Ipser ◽  
Hans Flandorfer
Keyword(s):  
Lead Free ◽  
Enthalpies Of Mixing ◽  
Liquid Systems

Enthalpies of mixing of metallic systems relevant for lead-free soldering: Ag–Pd and Ag–Pd–Sn

2005 ◽  
Vol 391 (1-2) ◽  
pp. 67-76 ◽  
Author(s):  
Christoph Luef ◽  
Aloke Paul ◽  
Hans Flandorfer ◽  
Alexander Kodentsov ◽  
Herbert Ipser
Keyword(s):  
Lead Free ◽  
Enthalpies Of Mixing ◽  
Metallic Systems

scholarly journals Calorimetric Investigation of NdI3-MI Liquid Systems (M = Li, Na, K, Rb, Cs)

2002 ◽  
Vol 57 (3-4) ◽  
pp. 136-142 ◽  
Author(s):  
L. Rycerz ◽  
M. Gaune-Escarda
Keyword(s):  
Binary Systems ◽  
Composition Range ◽  
Liquid Mixtures ◽  
Enthalpies Of Formation ◽  
Calorimetric Investigation ◽  
Liquid Alkali Metal ◽  
Enthalpies Of Mixing ◽  
Formation Enthalpies ◽  
Liquid Systems ◽  
Metal Iodide

The molar enthalpies of mixing, Δmix Hm, of the liquid alkali metal iodide - neodymium iodide binary systems have been measured over the whole composition range at 1068 K with an accuracy of about 6%. The apparatus used was a Calvet - type high - temperature microcalorimeter. In all the systems under investigation the enthalpies of mixing are negative, with minimum values close to −1.1, −4.8, −10.3, −16.2, and −20.0 kJ mol−1 for LiI-NdI3, NaI-NdI3, KI-NdI3, RbI-NdI3, and CsI-NdI3, respectively, at the mole fractions xNdI3 ⋍ 0.30 - 0.40 except the LiI-NdI3 system, where it is at the NdI3-rich compositions. The molar enthalpies of formation ΔformHm at 1068 K for M = Li, Na, K, Rb, and Cs, arising from the reaction 3 MI(l) + NdI3(l), are found to be −4.5, −17.5, −39.1, −59.9, and −73.3 kJmol−1, respectively They are compared with the formation enthalpies determined previously for the (3MCl, NdCl3) and (3MBr,NdBr3) liquid mixtures. These enthalpies become less negative with increase of the radius of the halide ion.

Lead-free solders: Enthalpies of mixing of liquid Ag–Cu–Ni–Sn alloys

2007 ◽  
Vol 22 (11) ◽  
pp. 3218-3225 ◽  
Author(s):  
U. Saeed ◽  
H. Flandorfer ◽  
H. Ipser
Keyword(s):  
Experimental Data ◽  
Binary Data ◽  
Quaternary System ◽  
Enthalpy Of Mixing ◽  
Integral Enthalpy ◽  
Lead Free ◽  
Enthalpies Of Mixing ◽  
Polynomial Fit ◽  
Calorimetric Technique ◽  
Lead Free Solders

Partial and integral enthalpies of mixing of liquid Ag–Cu–Ni–Sn alloys were determined at 1000 °C by a drop calorimetric technique using a Calvet type microcalorimeter. They were obtained by adding Ni to the ternary Ag–Cu–Sn alloys with different composition. The data were evaluated by means of an extended Redlich–Kister–Muggianu polynomial fit for substitutional solutions. The minimum and maximum in the quaternary system were also calculated. It was found that the maximum integral enthalpy of mixing (13,310 J/mol at 41 at.% Ag) occurs in the binary Ag–Ni system while the minimum integral enthalpy of mixing (−21,390 J/mol at 61 at.% Ni) occurs in the binary Ni–Sn system. Moreover the experimental data were compared to values calculated by different extrapolation models based on binary data.

Enthalpies of mixing in PrCl3CaCl2 and NdCl3CaCl2 liquid systems

1994 ◽  
Vol 236 ◽  
pp. 51-58 ◽  
Author(s):  
M. Gaune-Escard ◽  
L. Rycerz ◽  
W. Szczepaniak ◽  
A. Bogacz
Keyword(s):  
Enthalpies Of Mixing ◽  
Liquid Systems

Mixing Enthalpies of TbBr3-MBr Liquid Mixtures

2001 ◽  
Vol 56 (12) ◽  
pp. 859-864 ◽  
Author(s):  
L. Rycerz ◽  
M. Gaune-Escard
Keyword(s):  
Mole Fraction ◽  
Composition Range ◽  
Liquid Mixtures ◽  
Entire Composition Range ◽  
Mixing Enthalpy ◽  
Rich Region ◽  
Enthalpies Of Mixing ◽  
Binary Liquid ◽  
Liquid Systems ◽  
Mixing Enthalpies

AbstractThe molar enthalpies of mixing, Δmix Hm in the binary liquid systems TbBr3-MBr (M = Li, Na, K, Rb, Cs) have been m easured with a Calvet-type high-tem perature microcalorimeter over the entire composition range with an accuracy of about 6 %. Mixing of the two liquid components was achieved by using the “break-off am poule” technique. All the investigated systems show negative enthalpies of mixing with a minim um value of approxim ately -1.25, - 8 .3 , -17.0, - 2 0 . 0 and -22.5 kJ mol -1, for M = Li, Na, K, Rb and Cs, respectively. The mixing enthalpy in the TbBr3- LiBr system is positive in the TbBr3-rich region. For all the systems, the enthalpy minimum occurs at mole fraction xTbBr3 ≈ 0.3 - 0.4. The molar enthalpies of form ation Δ formHm (3MBr, TbBr3, 1) for M = Li, Na, K, Rb and Cs at 1113 K (arising from the reaction 3M Br(1) +TbBr3(1) = (3MBr, TbBr3) (1)) are found to be -4 .8 , -31.3, -63.3, -70.3 and -8 1 .2 kJ mol-1 , respectively. The leastsquares coefficients A, B, C, D and E in the equation λ (kJ mol-1) = A + B x + C x2 + Dx3 + Ex4, where A is an interaction param eter and x = xTbBr , are also reported.

Enthalpies of mixing of liquid Bi–Cu and Bi–Cu–Sn alloys relevant for lead-free soldering

2008 ◽  
Vol 472 (1-2) ◽  
pp. 1-10 ◽  
Author(s):  
Hans Flandorfer ◽  
Abdelaziz Sabbar ◽  
Christoph Luef ◽  
Meryem Rechchach ◽  
Herbert Ipser
Keyword(s):  
Lead Free ◽  
Enthalpies Of Mixing
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