A statistical analysis of the effect of a mixture component on the rheology of alumina feedstocks

K. C. Hsu*, P. C. Tsai


研究成果: 雜誌貢獻期刊論文同行評審


A statistical analysis based on the McLean-Anderson design method was carried out in studying the influence of each formulation component on the flow properties of alumina feedstocks. The formulations were composed of alumina powder (AL), polypropylene resin (PP), paraffin wax (PW), and stearic acid (SA). Fourteen different formulations were designed and their viscosities were measured using a capillary viscometer. The corresponding rheological parameters, i.e., fluidity, pseudoplasticity, and flow energy (ΔE) were evaluated and the effects of each ingredient in the mixture on them were analyzed. The studied ranges of AL, PP, PW, and SA were 87 to 89, 5 to 9.25, 3 to 7.25, and 0.75 to 1.5 wt pct, respectively. The results indicated that the lower alumina content or higher binder content would improve the fluidity of feedstocks. The order of increase in fluidity is SA > PW > PP. An increase of either AL or SA or a decrease of either PP or PW would cause less shear thinning in the resulting mixtures. Polypropylene resin is more effective than PW in enhancing pseudoplasticity. Finally, ΔE of feedstocks first decreases, reaches a minimum value at AL of about 87.7 wt pct, and then increases with powder loading. Increasing SA or decreasing either PP or PW would make ΔE smaller.

頁(從 - 到)399-408
期刊Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
出版狀態已發佈 - 1996

ASJC Scopus subject areas

  • 凝聚態物理學
  • 材料力學
  • 金屬和合金
  • 材料化學


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