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@ARTICLE{Mauer:889234,
      author       = {Mauer, Georg and Rauwald, Karl-Heinz and Sohn, Yoo Jung and
                      Weirich, Thomas E.},
      title        = {{C}old {G}as {S}praying of {N}ickel-{T}itanium {C}oatings
                      for {P}rotection {A}gainst {C}avitation},
      journal      = {Journal of thermal spray technology},
      volume       = {30},
      issn         = {1544-1016},
      address      = {Boston, Mass.},
      publisher    = {Springer},
      reportid     = {FZJ-2021-00139},
      pages        = {131-144},
      year         = {2021},
      abstract     = {Cavitation erosion is a sever wear mechanism that takes
                      place in hydrodynamic systems. Examples are turbine vanes of
                      hydropower plants or components of valves and pumps in
                      hydraulic systems. Nickel-titanium shape memory alloys
                      (NiTi) are attractive materials for cavitation-resistant
                      coatings because of their pronounced intrinsic damping
                      mitigating cavitation-induced erosion. In this work, NiTi
                      coatings were produced by cold gas spraying. The phase
                      transformation behaviors of the powder feedstock and the
                      as-sprayed coatings were investigated. Regarding the
                      obtained transformation temperatures, the measured substrate
                      temperatures during spraying rule out that either the shape
                      memory effect or the pseudoelasticity of NiTi could affect
                      the deposition efficiency under the applied conditions of
                      cold gas spraying. Another potential effect is
                      stress-induced amorphization which could occur at the
                      particle–substrate interfaces and impair particle bonding
                      by stress relaxation. Moreover, also oxide formation can be
                      significant. Thus, the presence of amorphous phases and
                      oxides in the near-surface zone of particles bounced off
                      after impact was investigated. Oxidation could be confirmed,
                      but no indication of amorphous phase was found. Besides,
                      also the evolution of local microstrains implies that the
                      substrate temperatures affect the deposition efficiency.
                      These temperatures were significantly influenced by the
                      spray gun travel speed.},
      cin          = {IEK-1},
      ddc          = {670},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {124 - Hochtemperaturtechnologien (POF4-124)},
      pid          = {G:(DE-HGF)POF4-124},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000601482000001},
      doi          = {10.1007/s11666-020-01139-x},
      url          = {https://juser.fz-juelich.de/record/889234},
}