Properties of WC-Co coatings with Al₂O₃ addition

Abstract

Properties of WC-Co coatings with Al2O3 addition on the C45 mild steel surface in acidic chloride solution were examined. The WC-Co-Al2O3 coatings on steel surfaces were deposited by an electro-spark (ESD) technique. The anti-corrosion properties of the coatings were mainly investigated by electrochemical methods. Moreover, the scanning electron microscope (SEM) was employed for the observation of the surface of materials. The structure of coatings depended on the composition of electrospark electrodes. In the WC80-Co5-Al2O315 coating, the largest corrosion resistance was shown. The corrosion rate of the specimen was approximately eight times smaller than the coating without of Al2O3 addition. The aim of the research was to obtain, by adding alumina, an improvement in the functional properties of WC-Co coatings produced by the ESD method. Due to the original features of ESD coatings, they can be used in sliding friction pairs and as anti-wear coatings on cutting tools.

Investigation of the effects of machining parameters on cutting conditions during orthogonal turning of austenite stainless steel

“…The characteristics of cutting tool, such as tool geometry, tool material composition, and coatings have a huge impact on tool life and applicable process parameters, through which productivity is also greatly affected. For the productive machining of these materials, ceramic, PCBN, and carbide tools with various coatings, such as ZrO2, SiC, TiC, TiCN, and TiAlN, are commonly used (Radek, 2023).…”

Analysis of the possibility of applying the machine learning methods for the prediction the surface geometry after its technological treatment

“…Modeling of surface geometry is an important technological stage of manufactured elements, as it allows to obtain of appropriate operational properties. The subject of consideration regarding applying advanced data analysis methods, such as the analysis of time series and random fields, is the WC-Al2O3 coating deposited by the electro spark method and then subjected to laser treatment [1][2][3][4][5]. As a result of laser treatment, greater uniformity of layer properties and much better adhesion to the base material were obtained.…”