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@ARTICLE{Brachhold:904308,
      author       = {Brachhold, Nora and König, Anna S. and Brendler, Erica and
                      Aneziris, Christos},
      title        = {{I}nvestigation of the synthesis and the alkali corrosion
                      of potassium aluminosilicates by {XRD} and {NMR} (29{S}i,
                      27{A}l)},
      journal      = {Ceramics international},
      volume       = {47},
      number       = {23},
      issn         = {0272-8842},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2021-05878},
      pages        = {33596 - 33605},
      year         = {2021},
      abstract     = {Alkali aluminosilicates are potential materials for high
                      temperature applications under alkali load. This study
                      investigated the corrosion behaviour of potassium
                      aluminosilicates of the nominal compositions of KAlSi2O6 and
                      KAlSiO4 synthesized at different temperatures and dwell
                      times and exposed to alkali load at 1100 °C. For
                      understanding the corrosion behaviour depending on the
                      synthesizing parameters, the produced materials and corroded
                      samples were investigated by XRD and NMR spectroscopy (29Si,
                      27Al). The combination of both analytical techniques showed
                      that characteristics of the synthesized materials on a
                      structural level played an important role for the corrosion
                      behaviour. It was shown that amorphous and disordered
                      components in the samples occurred which were not registered
                      by XRD. The application of 29Si and 27Al NMR spectroscopy
                      yielded that materials having already after synthesis a
                      structural arrangement similar to the equilibrium target
                      phase of the batch showed a high structural stability under
                      alkali load and gave positive results in the applied
                      corrosion test. Materials with large structural
                      rearrangements during alkali load exhibited volume changes
                      and therefore failed the corrosion test. Based on these
                      observations it should therefore be possible to design
                      materials with high chemical and mechanical stability
                      suitable as furnace linings and to evaluate end-of-life
                      aluminosilicates for an application as alkali corrosion
                      resistant recyclates.},
      cin          = {IBI-7},
      ddc          = {670},
      cid          = {I:(DE-Juel1)IBI-7-20200312},
      pnm          = {5241 - Molecular Information Processing in Cellular Systems
                      (POF4-524)},
      pid          = {G:(DE-HGF)POF4-5241},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000708539200003},
      doi          = {10.1016/j.ceramint.2021.08.269},
      url          = {https://juser.fz-juelich.de/record/904308},
}