Cobalt ferrite is a ferrimagnetic magnetostrictive ceramic that has potential application in magnetoelastic and magnetoelectric transducers. In this work, CoFe(2)O(4) was obtained using a conventional ceramic method and Bi(2)O(3) was used as additive in order to obtain liquid-phase sintered samples. Bi(2)O(3) was added to the ferrite in amounts ranging from 0.25 mol% to 0.45 mol% and samples we...

Sintered Halon G-80, a polytetrafluoroethylene (PTFE) resin available commercially in powdered form, is a superb diffuse reflector. Sintered Halon has > 96% absolute reflectance at wavelengths between 300 nm and 380 nm, and about 98% absolute reflectance above 380 rim. It is chemically inert, is mechanically strong, does not fluoresce, and the high reflectance is e&~y to maintain over time. We ...

This work proposes the design of laser-textured patterns for development surfaces with high anchor densities capable promoting solid mechanical bonding highly abrasive sintered diamond/carbide-reinforced. Cu-based composite coatings excellent wear resistance. The results show dense and well-adhered onto how higher nucleation TiC/Fe3C on diamond favours its greater within matrix, preventing grap...

TiB2-SiC-C and TiB2-TiC-C heteromodulus ceramics were sintered by reactive hot pressing of TiC-B4C-Si TiC-B4C precursors at 1830 °C 30 MPa. Sintering time the maximum temperature was between 2 8 min. The reactions in green body create submicron (100–400 nm) TiB2 crystals inside silicon carbide grains as well BxSiyCz nanofibers, which nucleate near SiC surfaces. Low hardness graphite platelets a...

Conventional flash sintering is difficult to adapt ceramics with a very low electrical conductivity like pure alumina. Alternatively, the latter can be heated by microwave/matter interaction due dielectric losses. Microwave energy also preferable as it allows rapid contactless and volumetric heating that initiated susceptors. This work presents assembly designed for this purpose using 2.45 GHz ...