WEAR-BEHAVIOR OF NANO-ALUMINA COATINGS ON 1010 STEEL WITH ELECTROSPRAY METHOD

Abstract

Generally, steel types with less than 0.2% carbon, such as AISI 1010 steel, are used as structural materials in many industries, such as plates and profiles. Due to the corrosion and wear susceptibility of metal materials, it is important to extend their service life by coating them with hard ceramic materials in recent years. Thanks to these coatings, it is possible to produce coated steel products with a longer life by increasing their resistance to scratches, abrasion, etc. In this study, nano-alumina coating process was performed on AISI 1010 steel, which is used as a substrate to increase wear resistance, by using electro-spray deposition method (ESD). After the coating process, nano-alumina coated steel samples, which were sintered for 3 hours at approximately 1000 °C, were subjected to the scratch test. In the scratch test performed with the tips attached to the 3D printer under 2, 5, 7, 10 N loads, no visible deformation was found under 7N load. In addition, the scratch depths formed as a result of the different coating parameters were evaluated and the optimum coating parameter values ​​were determined as 25 kV 0.8 ml/min. Cracks formed during the sintering process as a result of coating at 19.3 kV and 0.5 ml/min parameters were investigated and it was observed that cracks can be prevented when the temperature of 1000 °C can be reached for more than 50 minutes in these coating parameters. As a result, it was determined that the wear resistance of the coated steel substrate increased due to the coating process and the wear depth was less than 4 times compared to the low parameter coatings.