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Rheological Characterization of Zirconium Silicate Feedstocks Based on Water Soluble Binder

  • : Hidalgo, J1
  • : 1University Carlos III Madrid
  • : PDF Download
  • : 2012


Zirconium Silicate powders from crushed sand were investigated as raw material for Powder Injection Moulding (PIM). The powders, having unconventional characteristics for PIM, were mixed with a binder system based on Cellulose Acetate Butyrate (CAB) and poly-ethylene glycol (PEG). The rheological behaviour of the as-prepared feedstock was studied with a capillary viscosimeter. The dependences of viscosity with variables such as temperature, shear rate or solid loading were determined and compared with different conventional models relating these variables. Model parameters were assessed and adjusted by an iterative computational method to best fit with experimental results. Errors of the different models were compared by box-plots diagrams to determine the best adjusting model.

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