Dynamic drilling as an alternative method for determining the mechanical behavior of refractories materials

  • Daniel Zuluaga-Castrillón Universidad de Antioquia
  • Juan F. Hernández-Ruiz Universidad de Antioquia
  • Fabio Vargas-Galvis Universidad de Antioquia
  • María E. López-Gómez Universidad de Antioquia
  • Claudia C. Palacio-Espinosa Universidad EAFIT
Keywords: Ceramic refractories, mechanical properties, dynamic drilling, micro hardness


Ceramic materials hardness is usually determined by Vickers microindentation, which requires rigorous sample preparation and highly demanding analysis of traces turning this method difficult to use in industrial applications. This research is focused to correlate Vickers Hardness to drilling resistance by a hard-tipped drill-bit on alumina, alumina-zirconia-silica (AZS) and alumina-chromite refractories bricks. Alumina and AZS bricks were manufactured by electromelting process leading to obtain highly densified microstructures, while alumina-chromite bricks were manufactured by pressing and sintering which conducts to lower densification and particles cohesion within the bricks microstructure. Alumina and AZS refractories measured hardness is 1506.00 ± 99.71 HV1,5N (15.10 ± 0.90 GPa) and 1028.00 ± 95.49HV2,7N (10.30 ± 0.90 GPa) respectively, which is in contrast with the low measured hardness on alumina-chromite bricks of 54.00 ± 2.00 HV50N (0.54 ± 0.02 GPa) despite of the high hardness of alumina and chromite used as feedstock maybe due to a low cohesion between the particles. Drilling resistance results showed a well-fitted behavior regarding the measured Vickers hardness then the drilling resistance test is useful to predict the hardness of highly densified as well as of friable ceramic materials.


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Author Biographies

Daniel Zuluaga-Castrillón, Universidad de Antioquia

Ingeniero de Materiales, Departamento de Ingeniería de Materiales, Facultad de Ingeniería

Juan F. Hernández-Ruiz, Universidad de Antioquia

Ingeniero de Materiales, Departamento de Ingeniería de Materiales, Facultad de Ingeniería

Fabio Vargas-Galvis, Universidad de Antioquia

PhD en Ciencias, Departamento de Ingeniería de Materiales, Facultad de Ingeniería

María E. López-Gómez, Universidad de Antioquia

PhD en Ciencia y Tecnología de Materiales, Departamento de Ingeniería de Materiales, Facultad de Ingeniería

Claudia C. Palacio-Espinosa, Universidad EAFIT

PhD en Ciencias, Departamento de Ciencias Físicas, Escuela de Ciencias


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How to Cite
Zuluaga-Castrillón, D., Hernández-Ruiz, J., Vargas-Galvis, F., López-Gómez, M., & Palacio-Espinosa, C. (2017). Dynamic drilling as an alternative method for determining the mechanical behavior of refractories materials. TecnoLógicas, 20(39), 99-114. https://doi.org/10.22430/22565337.694
Research Papers