% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Wang:902192,
      author       = {Wang, Yaping and Sergeev, Dmitry and Yazhenskikh, Elena and
                      Pillai, Rishi and Müller, Michael and Naumenko, Dmitry},
      title        = {{E}xperimental study coupled with thermodynamic assessment
                      of the {N}i{SO}4–{K}2{SO}4 quasi binary system},
      journal      = {Calphad},
      volume       = {74},
      issn         = {0364-5916},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2021-04089},
      pages        = {102328 -},
      year         = {2021},
      abstract     = {Thermodynamic properties of the NiSO4–K2SO4 system play
                      significant roles in various applications, e. g. in gas
                      turbine components. In these components, Ni-base superalloys
                      and coatings often suffer from the so-called hot corrosion
                      induced by alkali sulphate deposits. In the present work,
                      the phase equilibria in the system NiSO4–K2SO4 were
                      experimentally determined for the first time using
                      differential thermal analysis (DTA), dilatometry (DiL) and
                      X-ray diffraction method (XRD). Two eutectic points and two
                      stoichiometric compounds, K2Ni2(SO4)3 and K2Ni(SO4)2, were
                      found in this system. The temperature and composition of the
                      lower eutectic were determined to be 642 °C and 40 $mol.\%$
                      NiSO4, respectively. Another eutectic between NiSO4 and
                      K2Ni2(SO4)3 was found at 819 °C, and the corresponding
                      composition is around 75 $mol.\%$ NiSO4 and 25 mol. $\%$
                      K2SO4. Based on the obtained experimental data, the
                      NiSO4–K2SO4 system was thermodynamically assessed using
                      the CALPHAD methodology. The modified associate species
                      model was used for the description of the liquid phase.
                      Using the optimized dataset, the calculated phase diagram
                      showed a good agreement with the experimental results. This
                      dataset extends the previously developed general sulphate
                      database including alkali- and alkaline-earth sulphates
                      (CaSO4–MgSO4–Na2SO4–K2SO4) with the addition of
                      NiSO4.},
      cin          = {IEK-2},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-2-20101013},
      pnm          = {1221 - Fundamentals and Materials (POF4-122)},
      pid          = {G:(DE-HGF)POF4-1221},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000685310300005},
      doi          = {10.1016/j.calphad.2021.102328},
      url          = {https://juser.fz-juelich.de/record/902192},
}