@misc{MeessAnasenzlOssenbrinketal., author = {Meeß, Joachim and Anasenzl, Manuel and Ossenbrink, Ralf and Michailov, Vesselin}, title = {Influence of Particle Velocities on Adhesion Strength of Cold Spray Inner Diameter Coatings}, series = {Journal of Thermal Spray Technology}, volume = {31}, journal = {Journal of Thermal Spray Technology}, number = {7}, issn = {1544-1016}, doi = {10.1007/s11666-022-01439-4}, pages = {2025 -- 2038}, abstract = {Due to the recent developments of hardware components and the hereby resulting ability to increase process parameters, the application area of the cold gas spray technology is expanding quickly. The present research focuses on the influence of working gas pressure and working gas temperature on the adhesive strength of inner diameter coatings, which were produced with two different alloy steel powder variants. Gas pressure and gas temperature were varied in four different parameter sets. At first, the powder variants were examined for morphology and particle size distribution. Secondly, the influence of four different process parameters on the achievable particle velocity was measured. In addition, the arithmetical mean height (Sa) of the coating was measured in order to determine the effect of the four parameter sets on the achievable surface roughness. Furthermore, the impact of the process parameters on the steel particles' penetration depth into the aluminum substrate was examined. Finally, adhesion strength measurements of the inner diameter coatings were carried out. The results reveal that with rising process parameters, the particle velocity increases, and the achievable surface roughness is lowered. It was also shown that the penetration depth of the particles into the substrate increases with increasing particle velocity. In addition, this study demonstrated a dependence of the process parameters on the adhesion strength for inner diameter coatings.}, language = {en} } @misc{MeessAnasenzlOssenbrinketal., author = {Meeß, Joachim and Anasenzl, Manuel and Ossenbrink, Ralf and Michailov, Vesselin and Singh, Reeti and Kondas, Jan}, title = {Cold Gas Spray Inner Diameter Coatings and Their Properties}, series = {Journal of Thermal Spray Technology}, volume = {31}, journal = {Journal of Thermal Spray Technology}, issn = {1544-1016}, doi = {10.1007/s11666-022-01365-5}, pages = {1712 -- 1724}, abstract = {Due to recent developments, cold gas spraying technology can now be used to create inner diameter coatings for cylinder inner diameters > 70 mm. The present investigations focus on the process optimization and the specific properties of cold gas spray inner diameter coatings created with three different alloy steel powder variants. The cold gas spray coating properties were compared with the corresponding properties of coatings created with twin wire arc technology. The particle velocities and deposition efficiencies were measured with the aim of optimizing the process parameters. The most suitable process parameters were used to analyze the microstructure of the deposited coating in terms of porosity and interface quality. Furthermore, the hardness and adhesion strength properties of the coatings were measured. In addition, the different liners were honed, and the achievable surface roughness of each was determined. Finally, wear resistance was evaluated using ball-on-disk testing. The results reveal that with the maximum process parameters, the cold gas spray coating properties are comparable to the twin wire arc coating properties. Further investigations are necessary to determine whether cold gas spraying is a feasible alternative to the current series production process for cylinder surface coatings.}, language = {en} }