This research is dedicated to the role of different amounts hexagonal BN (hBN: 0, 1.5, 3, and 4.5 wt%) on pressureless sinterability ZrB2–25 vol% SiC ceramics. Phenolic resin (5 with a carbon yield ~40 % was incorporated as binder powder mixtures after initial cold pressing, final sintering process performed at 1900 °C for 100 min in vacuum furnace. The as-sintered specimens were characterized ...

In this paper the microstructure and mechanical properties of two different Cf/ZrB2-SiC composites reinforced with continuous PyC coated PAN-derived fibres or uncoated pitch-derived were compared. Pitch-derived carbon showed a lower degree reaction matrix phase during sintering compared to PyC/PAN-derived fibres. The reason lies in carbon. presence coating for was found be essential limit at fi...

Microstructure-controlled and fully-dense ZrB2 HfB2 composites were elaborated by Spark Plasma Sintering with two different amounts of SiC (20 30 vol%) added to improve their oxidation resistance using optimized sintering parameters. Oxidation several samples in air plasma conditions, at 1000 Pa total pressure from 1800 K up 2600 K, was carried out. The mass variation during duration 300 s on a...

Aluminium-based hybrid composites are a new class of advanced materials with the potential of satisfying the demands in engineering applications. This paper describes the effects of carbon addition on the formation and properties of AMC with SiC nanoparticles reinforcement. The composites were produced via mechanical alloying followed by hot pressing. Three forms of carbon, graphite (GR), multi...

The numerical simulations of property of SiC/Al co-continuous composites under compression with ANSYS software were carried out. Based on the simulation results, deformational behavior and distribution of stress and strain fields were analyzed. The effects of compression speed for material property was studied. The results showed that Al matrix and SiC reinforcement exhibit different mechanical...

This Investigation studies the Mechanical and Tribological behaviour [ i.e dry sliding behaviour] of Al matrix composites reinforced with SiC and Gr particulate up to 10%, to study the effect of reinforcement, Load, Sliding speed and Sliding distance on stir cast Al-SiC and Al-Gr Metal matrix composites. Parametric studies indicate that the hardness, tensile strength of Al-SiC composite is grea...

The effect of residual stresses on the strength, toughness and work of fracture of Si3N4/SiC multilayered composites with different SiC layers has been investigated. It may be an effective way to design and optimize the mechanical properties of Si3N4/SiC multilayered composites by controlling the properties of SiC layers. Si3N4/SiC multilayered composites with different SiC layers were fabricat...