Preparation, characterization and mechanical properties of microarc oxidation coating formed on titanium in Al(OH)3 colloidal solution

► MAO coating is grown on titanium in Al(OH)3 colloidal solution. ► Coating is composed by dominant rutile TiO2. ► Coating elastic modulus is up to 145 GPa, larger than reported previously. ► In 17-23 A/dm2 range produced coatings are compact and solid.