2012 - Europe Direct Iasi

EUROINVENT 2012
cutter knife case that is fastened to the ruler surface. The
bracket is tall enough to support the whole ruler avoiding
books from falling out of the whole. This certainly is an idea
of ‘instantly’ transforming a normal ruler into a bookshelf.
5.20.
Title Method for uniform nickel electroplating on a cooper base
Violeta VASILACHE, Ion SANDU, Constantin FILOTE,
Authors
Andrei Victor SANDU
Institution Ştefan cel Mare University of Suceava
Patent no. Patent application No. A/00847/17.09.2010
The patent consists in a method to achieve a uniform nickel
layer by electroplating of a copper or a coppery iron support
in the presence of polyvinylpyrrolidone, used in mechanical
engineering as active surface agent.The method for uniform
nickel electroplating of a copper or a coppery iron support is
characterized by use of Watts baths to achieve thin
Description
passivated layers. Furthermore, it uses NiSO4 . 6H2O - 240 g/L
and NiCl2 . 6H2O – 45 g/L acid solutions, 30 g/L boric acid as
buffer system and 5 g/L polyvinylpyrrolidone as active
surface agent, with the average temperature range between
50-65°C and the current densities range between 300 – 500
mA.
5.21.
Class 5
109