International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

This part is a continuation of Part-1, which was studying the effect of anti-corrosion nano-materials coating using zinc (Zn) and cobalt (Co) on corrosion resistance and its relationship with mechanical properties. While, part 2 was on studying the linear stresses resistance after coating by using the same nanomaterials of paret-1 of carbon steel pipe and their relationship with chemical corrosion resistance using finite element analysis (FEA). The coating was tested with different thicknesses of nano-layers (300 μm, 600 μm, 900 μm, 10 μm) on a thick-walled cylindrical pipe subjected to a uniformly distributed internal pressure of 4 bars. The results showed that the value of linear normal stresses did not change when coating with 300 μm for both nano-coating materials. However, it was started to decrease slightly when covered with 600 μm of cobalt and continues to decrease with increasing the coating thickness. In addition, the results have shown that the overall improvement in linearized normal stresses and corrosion resistance due to cobalt coating can be about (66 %) higher in comparison with Zinc at 10 μm thickness of coating.

In Poland, in 2018 there were 22044 fires of landfill and waste storage yards. Out of these, 79 covered area bigger than 300 m2. For comparison in the years 2010-2017 the number of such fires was not exciding 36 (only in 2015 this number was 47). During these fires, many pollutants are emitted into the atmospheric air. These pollutants are subject to meteorological conditions, especially to dispersion. There are few models which can be used for the calculation of dispersion of these substances in the atmosphere. Depending on the location of the fire, its size and duration, burned material, the concentrations of the pollutants have different spatial distribution. In the case of particulate matter (PM), which has a negative health impact regardless of the concentration, identification of any additional concentration of PM in ambient air is important. In the work, the dispersion of green-house gases and the other selected air pollutants from two fires from 2018, which has the biggest impact on air quality in the international scale, is presented

Recent research has shown that the Nano coating materials play a vital role in improving performance of corrosion resistance in hostile environment and enhancing the mechanical properties and reducing the dimension changes. Due to the superior capabilities of Nano coating in many benefits which can be achieved, in addition to corrosion resistance, mechanical properties, make it smoother, stronger and improves its adhesive properties. In this work, the effect of anti-corrosive nanomaterials (Cobalt and Zinc) coating on chemical corrosion behavior and mechanical properties of carbon steel cylindrical pipe were studied in detail. The Nano-coating was done with different thicknesses (300nm,600nm,900nm and 10 μm), then analyzed using ANSYS software technology (version .19).The results showed that there is a strong relationship of corrosion improvement with improving mechanical properties, especially surface deformation resistance, elastic strain and stresses reduction of the inner pipe surface which contains a pressurized corrosive fluid. The maximum improvement was with the thickness of the cobalt coating (10 μm. The result of improvement in corrosion resistance of the cobalt-coated surface is approximately (5.165%) compared to the uncoated surface, also, the results showed an improvement in mechanical resistance and corrosion res istance because of deposition of cobalt particles better than zinc particles in all different thicknesses, with a maximum of about (66%) compared to zinc. Therefore, can conclude that the improving corrosion resistance due to coating with nanomaterials is very promising.