The influence of ZrB₂-SiC powders mechanical treatment on the structure of sintered ceramic composites

Mechanical Treatment of ZrB2–SiC Powders and Sintered Ceramic Composites Properties

“…It happens because materials have different properties, porosity evolution for various materials (layers) occurs with different kinetical parameters, there are viscous dissipation in the volume and heat losses from the sintered materials to the walls and bottom of the reactor. This corresponds to known experimental data [5,6]. The temperature field is presented in Fig.…”

“…The hot pressure of ceramic composites was carried out at temperature 1800°C and pressure 50 MPa with isothermal sintering 30 min. A raw density of mixtures, phases and its structure and coherently diffracting domains (CDD) using x-ray with CuKa irradiation have been measured accordingly [5]. Scanning electron microscope observations operated at 20-30 kV were used to determine the structure and average grain size using Tescan VEGA-3SBH.…”

“…It connects with the necessity to obtain the materials with specific properties, for example, materials resistant to high thermal and mechanical loading simultaneous. Porous composites can be considered as a suitable example [5,6]. Because the technologies are very complex and multiple-factor, mathematical modeling is used for the investigation.…”

Microstructure and thermal stability of the Cu-ZrB2 and CuCr1Zr-ZrB2 composites prepared by gas pressure infiltration

“…Much depends on the technology of the composite preparation. Manufacturing of products based on the ZrB 2 ceramics is difficult because treatment of ZrB 2 is almost impossible due to its high hardness [9]. Therefore, a simpler way for composite preparation could be the gas pressure infiltration technology followed by machining of the sample to the desired shape.…”