2012 - Europe Direct Iasi

EUROINVENT 2012
Deformable alloy 5083 has a resistance associated to a
good mechanical plasticity.
Microbonding of 357.0 and 5083 aluminum alloys is made
with AlTi5B1 and AlSr10 nanostructured prealloys and
pressed briquettes as bands produced by melt spinning
ultra-fast freezing . This method produces cooling rates up
to 105 K/s and can produce nano or cvasicristaline
structures with properties far beyond that of other methods
and in appreciable quantities. High-speed solidification
process parameters applied to AlSr10 and AlTi5B1
prealloys have the following values:-melting temperature
of 1100 ° C keeping the 1300 ° C, the distance of the
crucible - disk is1.5 mm, disk - crucible angle of 70
degrees, diameter 1 mm hole crucible, pressure applied
and demonstrated 1.5 bars of 1200rot wheel
revolutions/min. 1500rot/min respectively. Obtained strips
were pressed into briquettes of Ф 30 mmx4 mm at room
temperature and with a force of 5 tons of force.
6.3.
The Electrochemical Process for Obtaining Ni-Zn-P
Title
Double Layer Thin Film for Anticorrosive Application
Vasile Soare, Marian Buraga, Ionut Constantin, Ioan
Authors
Carcea, Mihail Tarcolea, Ana Maria Popescu
Research and Development National Institute INCDMNR-
Institution IMNR
“Gheorghe Asachi” Technical University of Iasi
Patent no. Patent application No. A/01259/2011
The invention concerns a process for producing thin films
of double layer alloy NiZnP, through an autocatalytic and
electrochemical codeposition process in two stages: in
autocatalytic stage of deposition, the deposition bath
consists of nickel sulfate solution, zinc sulphate, sodium
Description hypophosphite, with concentrations: 40÷60 g/l NiSO4
•7H2O, 10÷20 g/l ZnSO4, 10÷20 g/l NaH2PO2•H2O, using
as complexing and stabilization agents citric acid pH and
ammonium chloride, pH adjusting agents, sodium
hydroxide solution and agents to improve adhesion and
film structure deposited thiourea and lactic acid.
Codeposition electrochemical process in an electrolysis
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