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000858379 1001_ $$0P:(DE-Juel1)136812$$aBakan, Emine$$b0$$eCorresponding author
000858379 245__ $$aCold gas spraying of Ti-48Al-2Cr-2Nb intermetallic for jet engine applications
000858379 260__ $$aAmsterdam [u.a.]$$bElsevier Science84367$$c2019
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000858379 520__ $$aThe present article describes aspects of the cold gas spray processability of the intermetallic Ti-48Al-2Cr-2Nb (at. %) alloy, which is employed as a structural material in gas turbine engines. The effects of processing parameters, namely, gas pressure, gas temperature, spray distance, as well as the gas atomized feedstock particle size (d50 = 30 and 42 μm, respectively) and phase composition on deposition, were investigated. The results showed that when the highest available gas pressure (40 bar) and temperature (950 °C) were combined with a short spray distance (20 mm), well-adhering coatings could be deposited regardless of the investigated particle size. However, the maximum coating thickness could be achieved was about 30 μm with a deposition efficiency of 1%. Phase composition of the gas atomized feedstock was investigated with HT-XRD and according to the findings, heat treatment of the feedstock under vacuum was carried out. With this treatment, non-equilibrium, disordered α phase of the atomized powder was transformed into an α, α2 and γ phase mixture. At the same time, an increase in the hardness and oxygen content of the powder was detected. Swipe test performed with the heat treated powder revealed no improvement in terms of deposition, in fact, the number of adhering particles on the substrate was decreased in comparison with that of the untreated powder.
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000858379 7001_ $$0P:(DE-Juel1)129633$$aMauer, Georg$$b1
000858379 7001_ $$0P:(DE-Juel1)159368$$aSohn, Yoo Jung$$b2$$ufzj
000858379 7001_ $$0P:(DE-HGF)0$$aSchwedt, Alexander$$b3
000858379 7001_ $$0P:(DE-HGF)0$$aRackel, Marcus Willi$$b4
000858379 7001_ $$0P:(DE-HGF)0$$aRiedlberger, Florian$$b5
000858379 7001_ $$0P:(DE-HGF)0$$aPyczak, Florian$$b6
000858379 7001_ $$0P:(DE-HGF)0$$aPeters, Jan Oke$$b7
000858379 7001_ $$0P:(DE-HGF)0$$aMecklenburg, Matthias$$b8
000858379 7001_ $$0P:(DE-HGF)0$$aGartner, Thomas Maria$$b9
000858379 7001_ $$0P:(DE-Juel1)129670$$aVaßen, Robert$$b10
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