Metal and metal alloys are base materials that people have used for a
long time and play an important role in our new world without replacing.
With their own high chemical reactivity, metal and alloys easily
are corrosive in environment, especially in high temperature or electrolyte
solutions which is cause for having high socio-economic impacts, which
translate into substantial costs to the country. According to reports, around
1/3 of the mined metal all over the world cannot using anymore because of
corrosion. In addition to the direct damage that people can calculate,
corrosion of metals can also cause indirect damages such as reducing
machine durability and product quality, causing environmental pollution and
adverse effects to work safety. Therefore, the protection against metal
corrosion from the impact of the aggressive environment is becoming an
extremely pressing issue.
Protecting metal with organic coating has been widely used because of
its effectiveness, ease of processing and reasonable cost. Currently, the new
trend in the field of organic coatings is to find new inhibitors to replace toxic
chromates, creating an environmentally friendly coating, etc.
Nanotechnology has come to life and created tremendous breakthroughs.
Highly reactive pigments with nano dimensions when applied to organic
coatings to protect metal corrosion from concentrations of 2 – 3% show
breakthrough properties. In particular, iron oxides are considered as
pigments used in paint with all colors depending on the type of iron oxide
used, especially Fe3O4 magnetic iron oxide, corrosion protection ability so
far. The mechanism is still unclear.
For the above reasons, we propose the dissertation: “Study on effect
of Fe3O4 nanoparticles on polymer nanocomposite coating for corrosion
protection”