Journal of Material Sciences & Engineering

José C González

Publications

• Research Article
  Spark Plasma Sintering Techniques Improve the Properties of AlN-TiB₂ Ceramics with Nb₂O₅, Y₂O₃ and ZrO₂ as a Sintering Precursors
  Author(s): José C González, Miguel A Rodríguez, Ignacio A Figueroa, María-Elena Villafuerte-Castrejón and Gerardo C DíazJosé C González, Miguel A Rodríguez, Ignacio A Figueroa, María-Elena Villafuerte-Castrejón and Gerardo C Díaz
  
  AlN-TiB2 composites ceramics were prepared by Spark Plasma Sintering (SPS). The effects of Nb2O5, Y2O3 and ZrO2 additives on mechanical properties and densification were investigated. X-ray diffraction was used to identify the phases in the resulting composites. Good densification results were obtained using the different sintering additives. The mechanical properties such as hardness and fracture toughness were obtained using a Vickers indentation, the maximum values of hardness and fracture toughness were 13.9 ± 0.4 GPa for A4TN (90.48% AlN-4.76% TiB2-4.76% Nb2O5. wt% of composite ceramic) and 5.8 ± 0.9 MPa.m1/2 for A23TZ (71.43%AlN-23.81%TiB2-4.76%ZrO2 wt% of composite ceramic)... Read More»
  

  Abstract PDF