Abstract
In this paper, the residual stresses in high velocity oxy-fuel-sprayed chromium carbide/nickel-chromium coatings are measured using a bending technique "Almen" type measured. The influence of the most important spray parameters (including total gas flow rate, fuel-oxygen ratio, spray distance, thermal effects of the process, and particle speed) on the generation of internal stresses is examined. The influences of the process factors and material properties are studied, for example the "hammering" of the coating by impacting particles and the lack of conformity of the coefficient of thermal expansion of the coating/substrate. The results show that all residual stresses were caused by pressure and were very sensitive to the thermal effects of the process. Paper includes a German-language abstract.
