Preparation and Characterization of the Coated ZrB2 @ ZrO2 Ceramic

Jian Rong Song; Qiang Shen; Jun Guo Li; Lian Meng Zhang

doi:10.4028/www.scientific.net/AMR.66.226

Paper Titles

A New Process for Highly Effective Utilization of Industrial Solid Wastes — Sialite Technology
p.210

Study on Low-Temperature Sintering of Microwave Dielectric Ceramics by Sol-Coating Method
p.214

Synthesis of Carboxylic Acids Intercalated Mg-Al Layered Double Hydroxides by a Modified Reconstruction Method
p.218

Effect of Hydrogen Peroxide on TiB₂-Based Materials
p.222

Preparation and Characterization of the Coated ZrB₂ @ ZrO₂ Ceramic
p.226

Preparation and Characterization of Polyaniline/PMN Composite by In Situ Polymerization Method
p.230

Dielectric Properties of PMN/CB/CIIR Composites
p.234

The Effect of Particle Size on the Electromechanical Properties of PZT/PVDF
p.238

Preparation of TC4-LY12 Joint by Vacuum Diffusion Welding
p.242

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 66Preparation and Characterization of the Coated...

Preparation and Characterization of the Coated ZrB₂ @ ZrO₂ Ceramic

Abstract:

In this work, ZrB2 powder coated with ZrO2 (ZrB2 @ ZrO2) were applied to promote the densification of ZrB2 prepared by pulsed electric current sintering (PECS). The coating process and sintering behavior were investigated. While the pH value was about 9, the ZrB2 particles were successfully coated with ZrO2 by co-precipitation methods. The thickness of ZrO2 layer was about 3-5nm. The coated powder was sintered at 1600°C ~1950°C by PECS in vacuum. For comparison, the pure ZrB2 powder was sintered at the same conditions. The relative density of the sample coated with ZrO2 was 97.8% at PECS 1950°C, which was higher than that of sample without coating. The densification process can be divided into three stages. The ZrO2 coating layer plays an important role on the densification of ZrB2.