Abstract
The purpose of applying the nano-coating may be either decorative, functional, or a combination of both. The magnesium alloys specially AZ91 possesses great specific stiffness, less density, and electromagnetic protecting characteristics, which attracts the use of this type of material for several industrial parts. But the surface roughness and hardness is a major weakness of magnesium alloys, limiting their practical uses. Electroless nano-coating is one of the useful techniques for enhancement in these material characteristics. In this research, experimental analysis of various surface properties of magnesium alloy (AZ91) due to electroless nano-composite coating is investigated. The possibility of enhancing the efficiency and the properties of the composite depository material would be a valuable attempt, by finding a suitable chemical bath compositions and operating conditions of electroless nano-coating method. It has been detected that, as the concentration of titanium particles increases, the roughness value, hardness value, and corrosion property of coatings increases. The optimal value of the concentration of titanium particles TiO2 is also explored for gaining better surface property after coating.
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