Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Coating

Estimation the Efficiency of Nano Particles Coating on Carbon Steel by Atomization

Rana Afif Anaee; Ahmed M. Al- Ghaban; Douaa A. Abdullah

Engineering and Technology Journal, 2016, Volume 34, Issue 5, Pages 876-886

In this work, three nanoparticles were applied as coatings on carbon steel using atomization method (cold spraying) by airbrush.The coatings includednano Al2O3,nanoSiC and nanoZrO2 materials. The characterization of coated surfaces has been investigated by AFM and SEM. All these inspections indicated that the deposition of nanoparticles on carbon steel surface was uniform and homogeneous. Thethickness of coated layers was calculated using gravimetric method, while the particle size and roughness were measured from the analysis of atomic force microscopy.With constant conditions of coating, nano alumina coating gave the highest thickness (6.2216 nm) due to agglomeration of these particles compared with others as illustrated in SEM images. Corrosion test was performed to estimate the corrosion resistance, protection efficiency and porosity percentage which indicated the role of nano particle coating on corrosion control. These data showed that the nano alumina was better than other coatings and gave PE 99.69%.
Cyclic polarization was also estimated to show the probability of pitting corrosion. The coating with alumina gave the best data for decreasing the chance of pitting corrosion.

Erosion Wear Behavior of Industrial Material Reinforced Epoxy Resin Composites and its Coating with Natural Based Material

Aseel Basim Abdul-Hussein; Emad Saadi AL-Hassani; Reem Alaa Mohammed

Engineering and Technology Journal, 2015, Volume 33, Issue 4, Pages 902-918

In the present study, composites were prepared by Hand lay-up molding The composites constituents were epoxy resin as a matrix, 6% volume fractions of Glass Fibers (G.F) as reinforcement and 3%, 6% volume fractions of preparation industrial powder (calcium carbonate CaCO3, potassium carbonate K2CO3 or sodium carbonate Na2CO3) as filler. The erosion wear behavior and coating by natural wastes (Rice Husk Ash) with epoxy resin after erosion were studied. The results showed that the non – reinforced epoxy have lower resistance erosion than industrial based Material composites and the specimen (Epoxy+6%glass fiber+6% CaCO3) has higher resistance erosion than composites reinforced with sodium carbonate and potassium carbonate at 25cm, angle 30°, grin size of sand 850µm, temperature 25Ċ, 200 gm salt content in 3liter of water and 15 hour. Coating specimen with mixed epoxy resin -RHA with particles size in the range (1.4-4.2) µm improves erosion wear resistance characteristics of the coated specimen, coating thickness was (16 ± 1) μm and after erosion in (15 hours) the thickness was (10) μm .Application of the work protection of pipes from erosion, these pipes include the sewage water , drainage pipe laboratory (hot water, chemicals and mineral oil) , pipeline transportation of petroleum products and pipeline transportation of gas products