Abstract
Aluminum offers engineers weight saving advantages in their product design. However, aluminum has poor wear and friction properties. In addition, the surface oxide layer of this chemically active metal, which gives it the corrosion resistance, makes it a very difficult metal to plate [1]. Specific pre-treatment must be applied to remove the oxide layer from the aluminum surface. The nanodiamond particles additionally facilitates the process of chromium deposition. The object of this study is to evaluate the impact of nanodiamonds on the mechanical properties of the chromium coating plated on
Highlights
The aluminum has a lot of advantages in the design of engineering products because of its low weight
The main goal of this study is to investigate the influence of the ND on the readiness of chromium to be plated on the aluminum surface, the thickness and the continuity of the coating, the microhardness and wear resistance of the composite material comprised of electrolytic chromium coatings with nanodiamond particles and aluminum matrix material
It goes from 260 kg/mm2 (5 g/l) to 283 kg/mm2 (10 g/l) and falls down to 230 kg/mm2 (25 g/l)
Summary
The aluminum has a lot of advantages in the design of engineering products because of its low weight. New applications are possible when the light weight of aluminum is combined with the durability of the hard chrome. The most widely commercially used now-a-days process for preparing an aluminum surface for plating is the zinc immersion process [2]. In this process a thin and adherent film of metallic zinc or alloy of zinc replaces the aluminum oxide film. The zinc provides a surface which is more readily plated with other metals than the aluminum. May be deposited directly on the zinc surface
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