COST 531 / Expressions of Interest
We recommand: print with A4 landscape or use the Word-file for printing (Last update 2003.02.11)
WG
No. / Title of Project
Name / e-mail / Address
Activity planned
Skills sought
         
1
A1/1+4: Thermodynamic investigations of lead-free solder materials Mikula, Prof. Adolf
mikula@ap.univie.ac.at
Inst. f. Anorganische Chemie, Universität Wien,
Währingerstr. 42
A-1090 Wien
emf measurements, calorimetric measurements, 
oxidation behavior
 
1
A2/1+2: Interaction of the lead-free solder systems Ag-Sn and Ag-Cu-Sn with Ni as contact material: Thermochemical and electrical properties, related phase diagrams and thermochemical calculations Flandorfer, Dr. Hans
hans.flandorfer@univie.ac.at
Inst. f. Anorganische Chemie, Universität Wien,
Währingerstr. 42
A-1090 Wien
calorimetric measurements;
emf-measurements;
DTA; XRD; EPMA;
phase diagram calculations
diffusion measurements;
physical properties;
corrosion 
1
A5/1+3: Interactions of lead-free solders with Ti-containing metallizations Schuster, Prof. Julius C.
julius.schuster@univie.ac.at
Institut für Physikalische Chemie
Universität Wien
Währingerstr. 42
A-1090 Wien
interaction between Sn- and In-based solders and Ti-containing metallizations;
loss of adhesion;
wetting behavior
reflow and wave soldering under near industry conditions;
adhesion testing;
mechanical testing
1
BG1/1+2+3: Phase Diagrams of potential lead-free solders Vassilev, Prof. Gueorgui P.
gpvassilev@excite.com
University of Sofia
Faculty of Chemistry
1, J. Bourchier Ave.
BG-1164 Sofia
Thermodynamics;
microstructure;
physical and mechanical properties (surface tension, density, viscosity, thermal fatigue);
electrical properties;

Ti-containing solders

preparation of materials
1
D12/1+3: Investigation of quaternary additions to Sn-Ag-Cu solders Wielage, Prof. Bernhard
info@wsk.tu-chemnitz.de
Lehrstuhl für Verbundwerkstoffe
Fakultät für Maschinenbau und Verfahrenstechnik
TU Chemnitz
D-09107 Chemnitz
Cu-Ag-Sn+M (M=Ni, Pd, Au, Fe, Mg);
wetting;
thermodynamics; DTA;
microstructure;
SEM, TEM;
long-time exposure at 120°C, 150°C
 
1
D14/1: Crystal structures of intermetallics in lead-free solder joints Grin, Dr. Yuri
grin@cpfs.mpg.de
Max Planck-Institut für Chemische Physik fester Stoffe
Nöthnitzer Str. 40
D-01187 Dresden
crystal structure;
X-ray diffraction (powder and single crystals)
 
1
F1/1+2: Multicomponent phase equilibria studies in the systems based on Sb-Zn binaries. Experimental study and modelling Record, Dr. Marie-Christine
record@lpmc.univ-montp2.fr
Lab. de Physico-chimie de la Matière Condensée
UMR CNRS 5617, cc03
Université Montpellier II
Place E. Bataillon
F-34095 Montpellier
M-Sb-Zn: X-ray, DTA, DSC, EMPA, metallographie;

phase diagram calculations

(cooperation with D1/2, D2/2+1)
1
F2/1+2: Experimental and calculate phase diagram Au-Ag-Bi-Sb Legendre, Prof. Bernard
 

F

Au-Ag-Bi, Au-Ag-Sb, Au-Bi-Sb: DSC, X-ray, metallography, EPMA  
1
F3/1+2: Phase Diagrams of potential lead-free solders Tédenac, Prof. Jean-Claude
tedenac@lpmc.univ-montp2.fr
Univ. of Montpellier 2
Lab. de Physico-Chimie de la Matiére Condensée
Pl. E. Bataillon
F-34095 Montpellier Cedex 05
Thermodynamics;
microstructure;
X-ray; 
SEM;
microprobe
preparation of materials
1
I1/1+2+3+4: Contribution to the constitutional and technological characterization of selected groups of lead-free alloys as soldering materials Ferro, Prof. Riccardo
ferro@chimica.unige.it
Università di Genova
Dipartimento di Chimica e Chimica Industriale
Via Dodecaneso, 31
I-16132 Genova
phase diagrams of Bi, In, Sn, Zn based systems - experimental and optimization;
thermodynamic properties;
oxidation behavior;
surface tension;
mechanical properties
(in cooperation with:
Univ. of Leeds - A. Watson,
Univ. d'Aix-Marseille I - J.P. Bros,
Omodeo - V. Cinelli,
Univ. Roma - D. Gozzi,
ICFAM - CNR - E. Ricci,
Istituto Italiano della Saldatura - C. Rosselini)
1
PT1/1+3+4: Properties of lead-free solder alloys for the electronic industry Castro, Prof. Fernando;
Soares, Dr. Delfim

dsoares@dem.uminho.pt
University of Minho
PT
Sn-Bi-Cu and Sn-Zn-Al:
phase equilibria;
kinetics of oxidation;
wettability;
mechanical properties
Modeling of phase equilibria
1
PL1/1: Thermodynamics of Ag-In, Ag-Ga, and Ag-In-Ga liquid solutions Fitzner, Prof. Krzysztof
nmfitzne@imim-pan.krakow.pl
Lab. of Physical Chemistry, Faculty of Non-Ferrous Metals, AGH, 
30 Mickiewicza Ave.
PL-30-059 Kraków
emf measurements calorimetric measurements, DTA
1
PL3/1: Diffusion soldering - candidate for a lead-free interconnection technology Zieba, Prof. Pawel
nmzieba@imim-pan.krakow.pl
Polish Academy of Sciences
Inst. of Metallurgy and Materials Science
PL-XXXX Kraków
diffusion in sandwiched layers (substrate/solder/substrate) mechanical testing;
thermal stability
1
SLO1/1: Knudsen cell mass spectrometric determination of activities in selected binary and ternary alloys Popovic, Dr. Arkdij
arkadij.popovic@ijs.si
Jozef Stefan Institute
Jamova 39
SLO-1001 Ljubljana
Thermodynamic activities by Knudsen cell mass spectrometry  
1
YU1/1+2: Thermodynamic investigation of some Ga-based lead-free solder materials Zivkovic, Dr. Dragana
dzmaca@ptt.yu , jmm@eunet.yu, dzivkovic@tf.bor.ac.yu
Dept. of Metallurgy VJ12
Technical Faculty
Univ. of Belgrade
YU-19210 Bor
thermodynamics (DSC, calorimetry);
Phase diagrams (thermal analysis, XRD)
thermodynamic investigations
         
2
CH1/2+1: Theoretical modelling of phase diagrams and their experimental verification Janczak-Rusch, Dr. Jolanta
jolanta.janczak@empa.ch
EMPA Dübendorf
Section Surface and Joining Technology
Überlandstrasse 129
CH-8600 Dübendorf
theoretical modelling of phase diagrams and kinetics;
experimental verification
thermochemical data;
alloy production;
experimental verification of phase diagrams
2
CZ1/2: Theoretical study of phase diagrams of low-melting binary and ternary alloys, their preparation and characterization Drápala, Doc. Jaromír
jaromir.drapala@vsb.cz
Technical University of Ostrava
tr. 17. listopadu
CZ-708 33 Ostrava - Poruba
phase diagram calculations in binary and ternary systems (Sn, Cu, Ag, Zn, In, Bi, Sb) cooperation with researchers doing experiments
2
CZ2/2: Theoretical modeling of phase diagrams of low-melting point alloys Vrestál, Prof. Jan
vrestal@chemi.muni.cz
Dept. of Theoretical and Physical Chemistry
Masaryk University
Kotlárská 2
CZ-611 37 Brno
phase diagram calculations in tin-based alloys (Sn, Cu, Ag, Zn, In, Bi, Sb) cooperation with researchers doing experiments
2
CZ3/2+1: The theoretical modelling and experimental study of phase diagrams in selected systems for lead-free soldering Kroupa, Dr. Ales
kroupa@ipm.cz
Institute of Physics of Materials
AS CR
Zizkova 2
CZ-611 37 Brno
phase diagram calculations in binary and ternary systems (Sn, Cu, Ag, Zn, In, Bi, Sb);
EPMA; metallography
cooperation with researchers doing experiments and theoretical assessments of multicomponent systems
2
D1/2: Development of a thermodynamic database for low melting temperature alloys as support to control environment detrimental materials Zinkevich, Dr. Matsvei
zinkevich@mf.mpg.de
MPI für Metallforschung
PML
Heisenbergstr. 3
D-70569 Stuttgart
CALPHAD calculations on selected subsystems (Ag, Bi, Cu, Pb, Sb, Sn, Zn) experimental support
(cooperation with D2/2+1, F1/1+2)
2
D13/2+1+3: Investigation of thermochemical, thermophysical and transformation properties of lead-free solders Schneider, Prof. J.
schneider@mch.rwth-aachen.de
Lehrstuhl für Werkstoffchemie
RWTH Aachen
Kopernikusstr. 16
D-52074 Aachen
thermochemical properties;
thermophysical properties; calculation of surface tension and viscosity;
database with kinetic coefficients
equilibria and diffusion processes (WG 1);
surface tension, viscosity, wettability (WG 3)
2
D2/2+1: Thermodynamic modeling of stable and metastable complex solution phases as A2, B2, D03 and D82, appearing in alloys containing Ag, Bi, Cu, In, Pb, Sb, Sn, Zn Fries, Dr. Susanna G.
s.g.fries@
access.rwth-aachen.de
ACCESS e.V.
Materials and Processes
RWTH Aachen
Intzestrasse 5
D-52072 Aachen
thermodynamic modeling; (cooperation with D1/2, F1/1+2)
         
3
CDN1/3+5: Accelerated thermal fatigue testing of Sn-Pb and Pb-free solder joints Spelt, Prof. Jan K.

University of Toronto
CDN

thermal fatigue;
development of models for strain, stresses, ...;
influence of accelerated testing parameters ...;
assessment of accuracy of available reliability models ...
 
3
CDN2/3+5: Microstructural characterization of lead-free Sn-Ag-Cu solder Perovic, Prof. Doug D.

University of Toronto
CDN

effects of Pb, Au, Ag, and Pd contamination on microstructure, thermal and mechanical propeties  
3
CH2/3+5+6: Correlation between the properties of lead-free solder materials and the overall behavior of their joints Harzenmoser, Dr. Marc
marc.harzenmoser@empa.ch
EMPA Dübendorf
Section Surface and Joining Technology
Überlandstrasse 129
CH-8600 Dübendorf
mechanical tests (tensile, shear, creep, fatigue);
corrosion; 
non-desdtructive methods to predict joint behavior;
theoretical models to predict joint behavior
partners applying lead-free solders (microelectronics industry);
partners experienced in modeling and testing solders
3
CH3/3+5+6: Formation of intermetallic compounds and whisker growth in lead-free solders Egli, Dr. André

Shipley Scheiz AG
CH-6014 Littau-Lucern

EPMA; TEM; XRD; AFM (in cooperation with CH2/3+5+6)
3
D3/3+6: Control of microstructure formation in lead-free solder joints - "CONTROLDER" Schmitz, Dr. G.J.
g.j.schmitz@access.rwth-aachen.de
ACCESS e.V.
Materials and Processes
RWTH Aachen
Intzestrasse 5
D-52072 Aachen
experimental investigation of microstructure formation (effects of dopants);
numerical simulations
information from WGs 1 and 2;
information on boundary conditions from WG 6
3
D7/3+5: Determination of mechanical properties of eutectic and non eutectic lead free solder materials or solder joints depending on temperature and strain rate with regard to the microstructure. Reliability of solder joints to fatigue at low mechanical frequency depending on microstructure. Determination of crack behaviour of solder joints (flip chip) using micro waves Villain, Prof. Jürgen
villain@lrz.uni-muenchen.de
Fachbereich Elektrotechnik
Fachgebiet: Werkstoffe und Fertigungsverfahren der Elektrotechnik 
Fachhochschule Augsburg
Baumgartnerstr. 16
D-86161 Augsburg
stress-strain, creep as a function of temperature and strain rate;
reliability of solder joints to fatigue at low mechanical frequency
cooperation with A3/5+3, D5/5+3, D4/5
3
D9/3+5: Power Electronics Lefranc, G.
guy.lefranc@mchp.siemens.de
Siemens
CT MS4
Otto-Hahn-Ring 6
D-81739 München
specimen preparation;
mechanical and electrical properties of high-melting solders;
modeling of creep;

solder layer fatigue;
reliability under temperature/vibration stress;
damage mechanism;
model verification

 
3
D10/3+5: constitutive laws and fatigue properties of lead-free solders Wiese, Dr. Steffen
wiese@ihm.et.tu-dresden.de
TU Dresden
Inst. f. Halbleiter- und Mikrosystemtechnik
Mommsenstr. 13
D-01069 Dresden
creep shear tests (flip chip solder joints, PCBs);
isothermal fatigue (flip chip);
microstructure of lead-free solders
 
3
D14/3: Influence of heat treatment on melt properties Hoyer, Prof. Walter
hoyer@physik.tu-chemnitz.de
TU Chemnitz
DInstitut f. Physik
D-09107 Chemnitz
short range order and medium range order in liquid Sn-based binary and ternary alloys (Synchrotron radiation, neutron diffraction);
viscosity, density, surface and interfacial tension
small-angle and wide-angle neutron scattering
3
E1/3 Duran, Dr. J.
Amo, Dr. J.M.
jduran@cenim.csic.es
CENIM (CSIC)
Avda. Gregorio del Amo, 8
E-28040 Madrid
mechanical testing (tensile, shear, creep, fatigue);
metallography, SEM
 
3
F4/3: The role of nanoparticles and nanodroplets in the physical and mechanical performance of industrial lead-free solders Gasser, Prof. Jean-Georges
gasser@sciences.univ-metz.fr
Laboratoire de Physique des Liquides et des Interfaces
Institut de Physique et Chimie
Université de Metz
1 Bd. D.F. Arago
F-57078 Metz
preparation of melts containing nanograins or nanodroplets;
electrical and thermal cond.; diffusion;
SAXS; SANS;
wettability;
magnetic properties;
microscopy of solders on different levels;
thermal expansion, tensile, shear, creep, fatigue,...;
modeling
in cooperation with 11 other laboratories in D, F, Russia(?), Ukraine(?)
3
F6/3: Microstructural and chemical evolution of lead free solder materials with elaboration and service conditions Silvain, Dr. Jean-Francois
silvain@icmcb.u-bordeaux.fr
ICMCB - CNRS
87, Av. du Dr. Albert Schweitzer
F-33608 Pessac
microstructure;
chemical characterization;
correlation between microstructure and mechanical behavior;
microstructure under cycling conditions
 
3
PL2/3+5: Lead-free solders: the effect of wetting-interface structure-bond strength interrelationship on utility properties of solder joints Sobczak, Dr. Jerzy
sobczak@iod.krakow.pl
Foundry Research Institute
73 Zakopianska St.
PL-38-418 Krakow
physical properties;
electrical properties;
mechanical properties;
surface tension, wetting;
microstructure;

reliability investigations

Thermodynamic calculations;
HR-TEM;
push-off shear tests;
production of real joints under industrial conditions
3
PL4/3: Measurements of surface tension and density of the (Ag-Sn-Cu)eut+Sb alloys Moser, Prof. Zbigniew
mmmoser@imim-pan.krakow.pl
Inst. of Metallurgy and Materials Science
Reymonta St. 25
PL-30-059 Kraków
density and surface tension of 
Ag-Sn-Cu-Sb (maximum bubble pressure)
 
3
PL5/3: Model for the formation of multi-layers structure during diffusive soldering Wolczynski, Prof. Waldemar
nmwolczy@imim-pan.krakow.pl
Inst. of Metallurgy and Materials Science
Reymonta St. 25
PL-30-059 Kraków
modeling of diffusive soldering preparation of actual joints
3
S1/3+5+2: Wettability and reliability modelling and characterization of lead-free solders Liu, Prof. Johan
johan.liu@me.chalmers.se
Division for Electronics Production
Chalmers Univ. of Technology
Argongatan 30
S-431 53 Mölndal, Göteborg
Thermodynamic assessment of Ag-Cu-O-Sn;
wettability;
low-cycle fatigue life;
degradation mechanisms;
theoretical prediction of fatigue life
determination of oxygen content in solders;
thermodynamic databases
3
SK1/3+5: Lead-free solder materials for joining of composite with other materials Sebo, Dr. Pavel
ummssebo@savba.sk
Inst. of Materials and Machine Mechanics
Slovak Academy of Sciences
Ra?ianska 75
SK-831 02 Bratislava 3
preparation of alloys and composites;
wettability and surface tension;
metallographic study of joints;
shear strength
 
3
UK2/3+5: Properties and life prediction of lead-free solder joints Plumbridge, Prof. William J.
W.Plumbridge@open.ac.uk
Dept. of Materials Engineering
The Open university
Milton Keynes
MK7 6AA
UK
experimental investigation of mechanical properties (tensile/shear, creep, fatigue, thermal cycling) in Ag-Sn, Cu-Sn, Ag-Cu-Sn;
equations for life prediction;
microstructure
Experience with large-scale PCB evaluation;
special equipment for real joint strength testing;
expertise in FE modeling
3
UK3/3+5: Correlation between bulk solder properties and interconnection performance Plumbridge, Prof. William J.
W.Plumbridge@open.ac.uk
Dept. of Materials Engineering
The Open university
Milton Keynes
MK7 6AA
UK
experimental mechanical tests on model joints and actual joints on boards - comparison of data - establishment of correlation factor Experience with large-scale PCB evaluation;
special equipment for real joint strength testing;
expertise in FE modeling
3
UK4/3+5: Constitutive relationships for the mechanical behaviour of lead-free solders Plumbridge, Prof. William J.
W.Plumbridge@open.ac.uk
Dept. of Materials Engineering
The Open university
Milton Keynes
MK7 6AA
UK
development of history-dependent mechanistic damage equations Experience with TEM of solder alloys
3
UK5/3+5: The role of intermetallic compounds in the performance of lead-free solder joints Plumbridge, Prof. William J.
W.Plumbridge@open.ac.uk
Dept. of Materials Engineering
The Open university
Milton Keynes
MK7 6AA
UK
Influence of intermetallic compounds thickness on tensile, fatigue, creep and thermomechanical fatigue behavior of model and actual interconnections;
metallography
Experience with large-scale PCB evaluation;
special equipment for real joint strength testing;
expertise in FE modeling
         
4
A4/4: Environmental aspects of lead-free soldering materials Krachler, Prof. Regina
regina.krachler@univie.ac.at
Institut für Anorganische Chemie
Universität Wien
Währingerstr. 42
1090 Wien
simulation of waste disposal (Ag-In-Sn; Ag-In-Pd-Sn);
mobility and chemical behavior of released metal ions;
formation of organometallic In- and Sn-compounds
Speciation of organotin and organoindium compounds in the environment;
modeling of mobility of heavy metals in sediments and soils
4
A6/4: Environmental fate of soldering materials disposed in sanitary landfills Lorber, Prof. Karl E.
enttech@unileoben.ac.at
Inst. for Waste Management and Landfill Technologies
University of Leoben
Peter Tunnerstr. 15
A-8700 Leoben
simulation of disposal of soldering materials and electronic wastes;
mobility of heavy metals ions in soil;
formation of organic and inorganic Sn-, Cu-, Ag-, and Bi-compounds
Speciation of organotin and organoindium compounds in soil, water and sediments
         
5
A3/5+3: Thermo-mechanical properties of lead-free solder materials Weiss, Prof. Brigitte
weiss@ap.univie.ac.at
Inst. of Material Physics
University of Vienna
Strudlhofgasse 4
A-1090 Wien
Elastic properties; 
elast-plastic properties;
plastic behavior;
creep response;
thermal strain; 
CTE for packaging structures ...
cooperation with D5/5+3; cooperation with WG 3
5
BG2/5: Numerical calculations and computer simulation of different stages of lead-free soldering process Drenchev, Dr. Ludmil Borisov
ljudmil.d@ims.bas.bg
Institute of Metal science
Bulgarian Academy of Science
67, Shipchenski Prohod Street
BG-1574 Sofia
Prediction of thermal-cycle fatigue-life and life time 
 
5
CDN3/5+6: The effect of the higher soldering temperatures required for lead-free solders on the incidence of conductive anodic filament (CAF) formation  Turbini, Dr. Laura J.

Centre for Microelectronics Assembly and Packaging
University of Toronto
CDN

CAF formation with different fluxes;
different test boards;
effect of voltage gradient
(close interaction with CMAP companies)
5
CDN5/5: Metallurgical reactions between lead-free solders and printed board pad finishes Corbin, Dr. S.F.
scorbin@mecheng1.uwaterloo.ca
Dept. of Mechanical Engineering
University of Waterloo
Waterloo, Ontario
CDN
interactions between solders and PCB metal pad finishes (in solid and liquid state) experience with mechanical behavior of bulk solder and joint properties (creep, creep-fatigue interactions, reliability)
5
D4/5: Microstructural change in solders: computational modeling and experimental verification Müller, Prof. Wolfgang H.
wolfgang.h.mueller@tu-berlin.de
TU Berlin
Fakultät V
Institut für Mechanik
Einsteinufer 5
D-10587 Berlin
microstructure modeling (phase field theory, discrete Fourier transform techniques, FE modeling);
experimental homegization techniques;
nano-indentor tests; micro-fatigue tests
 
5
D5/5+3: Thermo-mechanical reliability of lead-free solder materials Michel, Prof. Bernd
bernd.michel@izm.fraunhofer.de
Fraunhofer Institute IZM Berlin
Micro Materials Center
Gustav-Meyer-Allee 25
D-13355 Berlin
thermo-mechanical testing;
creep and fatigue tests;
development of new testing methods (microdeformation behavior);
thermo-mechanical simulation, fracture analysis, life-time estimations ...
higher temperature applications;
creep laws for lead-free soldering;
materials testing
5
D6/5+3+6: Thermomechanical reliability of lead-free solder materials Auerswald, DI Ellen
ellen.auerswald@izm.fraunhofer.de
Technical University Berlin
Schwerpunkt Technologien der Mikroperipherik
Sekr. TIB 4/2-1
Gustav-Meyer-Allee 25
D-13355 Berlin
Fatigue and creep test;
thermal and mechanical simulation of solder materials;
stress and strain analysis
collaboration within WG 5 (esp. D5/5+3);
collaboration with WG 3 and 6
5
D11/5+6: Processability of lead-free solder pastes & influence of assembly process parameters on the reliability of lead-free SMT solder joints Wolter, Prof. K.J.
Hagen, DI G.
wolter@iet.et.tu-dresden.de
hagen@iet.et.tu-dresden.de
Dresden University of Technology
Electronics Technology Laboratory
D-01062 Dresden
processability of lead-free solder pastes;
mechanical prop. (shear strength) of SMT solder joints;
formation of voids;
flux-free soldering
 
5
F5/5: Reliability of lead-free solder joints Zardini, Prof. Christian
zardini@ixl.u-bordeaux.fr
Laboratoire IXL
ENSEIRB
Université Bordeaux 1
CNRS UMR 5128
351 Cours de la Libération
F-33405 Talence Cedex
aging experiments;
microanalysis;
thermomechanical finite element simulation;
modeling
contacts with Siemens Munich (Prof. Wolfgang);
participation in HIRONDELLE project (GROWTH, FP5)
5
GR1/5: Experimental Investigation and Determination of Strain Distributions in Solder Joints Using Optical Moiré Techniques Karalekas, Prof. Dimitris
dkara@unipi.gr
Dept. of Technol. and Production Systems
University of Piraeus
Karaoli and Dimitriou 80
GR-185 34 Piraeus
reliability tests by Moiré interferometry  
5
UK1/5+3: Stress analysis and measurement in soldered interconnections Gungor, Dr. Salih
s.gungor@open.ac.ukDept. of Environmental and Mechanical Engineering
The Open University
Ealton Hall
Milton Keynes, MK7 6AA
UK
High-resolution moiré interferometry experiences with large scale PCB evaluation;
expertise in FE modeling
         
6
CDN4/6: Alternative soldering processes using transient liquid phase sintering Corbin, Dr. S.F.
scorbin@mecheng1.uwaterloo.ca
Dept. of Mechanical Engineering
University of Waterloo
Waterloo, Ontario
CDN
develop and study transient liquid phase sintered solder pastes for use in microelectronic packaging experience with mechanical behavior of bulk solder and joint properties (creep, creep-fatigue interactions, reliability)
6
D8/6: Packaging and Assembly Albrecht, Dr. J.
hans-juergen.albrecht@blns.siemens.de
Siemens 
CT MM6, Packaging & Assembly
Siemensdamm 50
D-13629 Berlin
manufacturing preparation for PCB with lead-free solder;
compatibility with conventional and high-integrated devices;
interaction of solders with board and device metallization;
test set up;
process and technical reliability
 

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Last update 2003.02.11