Graphene platelets enhanced pressureless- sintered B 4 C ceramics

Microstructure and mechanical properties of pressureless sintered alumina-silver composites

The silver toughened alumina ceramics, which were fabricated via a conventional ceramic processing route using commercially available alumina and silver oxide powders as the starting materials, exhibit a higher fracture toughness (6 to 9 MPamo.5) than the monolithic alumina ceramic ( 2.5 to 3.0 MPamo.5). The weak interfacial bonding between the silver inclusions and the alumina matrix is charac...

Ancient Technologies: The Egyptian Sintered-Quartz Ceramics

To physicists and engineers, ceramics represent materials demonstrating excellent strength and hardness, materials that can serve as electrical insulators or conductors, some of them being able of a high-temperature superconductivity. To researchers working in archaeology and art history, ceramics mean objects such as figurines, tiles and tableware helping understanding cultures and technologie...

Microstructure of spark plasma sintered TiB2 and TiB2–AlN ceramics

In this research study, the effects of aluminum nitride (AlN) additive on the densification behavior and microstructure development of titanium diboride (TiB2) based ceramic matrix composite were investigated. In this way, a monolithic TiB2 ceramic and a TiB2–5 wt% AlN ultrahigh temperature ceramic composite were fabricated by spark plasma sintering (SPS) proces...

Phase assembly and electrical conductivity of spark plasma 4 sintered CeO 2 – ZrO 2 ceramics 5

10 Abstract CexZr1-xO2 (x = 0.10, 0.16 and 0.33) nano11 crystalline powders were obtained by a two-step synthesis 12 technique and sintered by spark plasma sintering (SPS). As 13 consequence of the reduction of Ce to Ce species by 14 carbon in the graphite environment in SPS, phase assem15 blies including tetragonal, monoclinic and pyrochlore 16 phases were generated in the ceramics during the ...

Strength evaluation of sintered ceramics by dynamic crack path model