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Conclusions
Based on the observations described above, it could be concluded that:
1 adding alumina to iron oxide produced a solid solution that was better in its physico-mechanical and corrosion properties when used in paint films than using each individual pigment alone;
2 paint films containing 3Fe2O3: 1Al2O3 gave greater hardness values, while films containing 1Fe2O3: 3Al2O3 pigment imparted greater ductility and impact resistance, which confirmed that the pigments prepared improved physico-mechanical properties of paint films; and
3 paint films containing the pigments prepared showed high
corrosion resistance than paint films containing Fe2O3 alone, i.e. the new pigments were more capable of preventing corrosion than Fe2O3 alone.

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