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Register a new userCorrosion Study of Iron and how protection it
دراسة تآكل الحديد و كيفية السيطرة عليه
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محمد علي الشيخ( باحث )
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درسنا في هذا البحث مشكلة صدأ الحديد و تآكله و الخسارة الاقتصادية و البشرية التي يسببها التآكل . ثم تطرقنا إلى آلية التآكل و أسبابه و أنواعه. ثم تعرفنا إلى طرق حماية الحديد من التآكل و لاسيما الحماية بالغمس الساخن في مصهور الزنك و الغلفنة الكهربائية (الطلاء الغلفاني). ثم درسنا الطلاء الغلفاني للحديد بالزنك بوجود حمض السوكسينيك.
We studying in this research the reaction with Zinc sulphate in an aqueous solution by physical - chemical method in presence of Succinic Acid , and determined compounds which are formed in this solution and we calculated of it formation the constants. After we used these electrolytes in plating by Zinc , that is by electro precipitation of this metal on the solid electrodes (steel, copper) so that we definite the best of these electrolytes for galvany and the set necessary conditions for its use.
References used
Ijsseling, F. P.“ Survey of Literature on Crevice Corrosion ”, London, The Institute of Materials, 2000
(Trethewey , K.R. and Chamberlain, J "Corrosion for students of science and engineering" , (1988
(Fontana , M.G. "Corrosion Engineering" , (1988
rate research
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In this research we studied the corrosion rate changes of iron samples which are not
galvanized in the laborators ( laboratorsies of the faculty of science) and in nature (on the
beach of the high-institute sea- research in Lattakia)
The Inula ext
racts were choosen as a plant inhibitor to cover the iron samples and
protect it . because this plant is well known in the Coastal area, also it,s very cheap and
easy to find and has good anti oxidation properties.
The best conditions for (Inula-seawater) extract were : (PH=7 , time =24 hours ,
concent ration = 10%).
The studied iron samples were treated with the ( inula-seawater) extract in the same
previous conditions and we studied the corrosion rate changes for those samples and the
affectivity of the inhibitor for them.
The results were compared in each stage with other samples that were not treated .
the treatment and after it were as follows:
The velocity of the corrosion in the iron samples (before the treatment with the
extract) in 120 days:
- in the laboratory tanks was 0.78 mg/cm2 .day, but after the treatment was 0.23
mg/cm2.day
-in the drizzle area was 0.80 mg/cm2.day, but after the treatment was 0.47
mg/cm2.day
-in the waves area was 0.75 mg/cm2.day , but after the treatment was 0.41
mg/cm2.day
- in the depth area was 0.79 mg/cm2.day , but after the treatment was 0.21
mg/cm2.day.
Hepcidin-25 is a peptide hormone plays an important role in
regulating the systematic iron homeostasis. This paper was
conducted to study the correlations of Hepcidin with some iron
status markers and red cell indices among patients with iron
def
iciency anemia (IDA) and healthy controls in Damascus. Our
study comprised 20 IDA patients (Hb≤11 g/dl for men and
women,Tsat≤20% and ferritin <30 ng/dl) and 10 healthy non
IDA controls. Complete hemogram was performed, iron status
markers (serum iron, total iron binding capacity and ferritin)
were measured and transferrin saturation was calculated .
The corrosion behaviour of plain-carbon steels in water environments has been studied. In
this study, a wide range of carbon steels are used in the most common corrosion environments
which are salt water and drinking water. The specimens were immer
sed in the water media and corrosion rates evaluated, using the weight loss method. The effect of
carbon content, corrosion environments and time of immersing on the specimens corrosion
rates of Hypo-eutectoid plain carbon steels have been studied. The aim of this work is to study
the effect of carbon content on the corrosion rate of carbon steels in different corrosion media
and various time intervals. The obtained results showed that there is a clear correlation with
the microstructure where higher Pearlite show higher corrosion rate, so the corrosion rate
increases with the carbon content. The results also show that the corrosion rate of carbon-steel
in salt water is higher than its value in drinking water. It is also found that longer exposure
time, leads to a lower corrosion rate while weight loss is still increasing.
The dissolution rate of Iron and Titanium from Syrian basalt rock was
studied by hydrochloric acid, sulfuric acid, mixture of hydrochloric acid
methanol, sulfuric acid methanol solutions. The effects of temperature, time of
digesting and concentra
tions of acids have been investigated, the ratios of solid
to liquid and stirring speed were constant (S/L=0.02). It has been clear that
when the mixture of hydrochloric acid and methanol (100:50(V:V)
HCL:CH3OH) was used, the best dissolution for both iron and titanium was
obtained when we digested the rock and it took 6h at 100 ˚C where as the
concentration of hydrochloric acid and methanol were [HCl]=11M, [CH3OH]
=0.92M, the resulting ratios of dissolution of iron and titanium in the
mentioned conditions were 75.53%, 63.19 % respectively.
Myelomeningoceles are very common anamoly in our country. Mostly it ends
with permanent damage and handicap. Lot of these children die due to meningitis as a complication.
It still till now a large number of children with myelo meningoceles seek me
dical care in pediatric hospital
and other health centers. So, we must know the reasons and the predisposing factors for the
myelomeningoceles to reduce their incidence.
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