Dependence of properties of oxy-fuel sprayed layers upon input parameters of process has been investigated. In the introductory part of the thesis, motivation for the research has been presented, together with short survey of current knowledge in the field of thermal spraying, particularly in the field of oxy-fuel spraying. Attention has been directed to production of layers intended as protection against corrosion. Also, different scientific approaches, i.e. methods applied currently in modeling of thermal spraying process have been presented. Starting hypothesis for the thesis has been defined as well as methodology for experimental procedure. In the second part of the thesis technology of thermal spraying has been presented, particular interest being devoted to oxy-fuel spraying. Formation of the layer has been explained, together with the key concepts, understanding of which is necessary for producing of required layers when technology of thermal spraying is applied. Aluminum based layers intended as corrosion protection are mentioned, mechanisms providing protection against corrosion to the protected metal are explained and reasons for testing of properties listed in the introductory part are given. Basic concepts of methods that can enable required measurements are given. In the third part of the thesis, conduct of experiment made in The Laboratory for Machine Tools of the Faculty of Mechanical Engineering and Naval Architecture applying “ Castolin Castodyn DS 8000” system for robotized spraying has been described. Within frame of experiment, layers of pure aluminium have been applied to the plates made of grade S 235 JR steel using oxy-fuel spraying process. Experiment has been performed according surface-centered central-composite planed experiment. Following properties of layers have been investigated: adherence, thickness, corrosion potential, corrosion propagation rate, polarization resistance and surface roughness parameters Ra and Rz. Testing of adherence has been made in the Laboratory for Mechanical Properties Testing, testing of layer thickness was made in the Laboratory for Welding, testing of corrosion resistance was made in Laboratory for Protection of Materials, while testing of roughness was made in Laboratory for Precise Measurement od Length and Laboratory for Machine Tools. Obtained results have been presented in the fourth part of the thesis. Statistical processing of measured data and mathematical modeling has been done applying method of response surfaces. Mathematical models depicting relationships between investigated properties and input parameters of oxy-fuel spraying process have been developed. In the fifth part of the thesis the results have been analysed, and in the sixth part of the thesis certain suggestions and proposals for new directions of investigation based on the gained knowledge are given.