Improvement of Properties of Stainless Steel by Nanocomposite Coating

To improve the hardness and corrosion resistance of stainless steel its surface can be modified by developing nanocomposite coatings applied on its surface. The main objective of this thesis is to study effect of electroco-deposition method on microhardness and corrosion resistance of stainless steel. In this thesis employed Electroco-deposition process to develop a composite coating with (Ni) matrix and Ceramic oxide particles (Al2O3, ZrO2 , and SiC) as reinforcements. The results showed the nanocomposites coating have a smooth and compact surface and have higher hardness than the uncoated stainless steel (2.3 times), and also found that the nanocomposite coating improves the corrosion resistance significantly (89.25%).. In this thesis neural network model has been used for the prediction similarities between experimental work and neural network trained results. The obtained results were correlation 0.951965 for microhardness with 7 neurons of hidden layer, and corrosion rate obtain correlation 0.877467 with 4 neurons of hidden layer.