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The paper investigated the influence of the mass fraction (2.5, 9.5, and 15 wt%) of the additive mixture (methyl-hydroxy-ethyl-cellulose, glycerol, and tung oil in a mass ratio of 4:3:6) on the possibility of shaping using the extruding process of the Al2O3 ceramic parts, as well as the characteristics of the final product. The characteristics of ceramic products tested after sintering included the following: specific density, open porosity, dimensional shrinkage, Vickers hardness, grain size distribution and surface defects. The results obtained showed that insufficient additive content in the ceramic mass prevents its extrusion, while excessive additive content negatively impacts the properties of the final product.

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Influence of the Quantity of Additives in the Extrusion Mass of Al2O3 Ceramics on the Characteristics of Sintered Ceramic Parts

  • 会议论文

  • 发表日期：

    2025年

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  • Zenaida Hodžic Sinanovic,
  • Sabina Begić,
  • Indira Šestan,
  • Zlata Ibrišimovic Subašic

摘要

The paper investigated the influence of the mass fraction (2.5, 9.5, and 15 wt%) of the additive mixture (methyl-hydroxy-ethyl-cellulose, glycerol, and tung oil in a mass ratio of 4:3:6) on the possibility of shaping using the extruding process of the Al2O3 ceramic parts, as well as the characteristics of the final product. The characteristics of ceramic products tested after sintering included the following: specific density, open porosity, dimensional shrinkage, Vickers hardness, grain size distribution and surface defects. The results obtained showed that insufficient additive content in the ceramic mass prevents its extrusion, while excessive additive content negatively impacts the properties of the final product.