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...

• Colloidal optimization in water allows the homogeneous dispersion of small amount (3 wt%) nanosized nickel within WC powders. Dispersed decreased temperature a dense compact (>95 th%) more than 500 °C. The smaller size is, better effect is observed. Compacts present equiaxial grains with metallic located at triple points and graphite precipitates sample. Tungsten Carbide low content shows har...

Review of the literature from 1991 to 2002 on the use of rapid prototyping in the biomedical area emphasizes the applicability of this technique to aid diagnosis and planning in Maxillofacial Surgery and Traumatology. A case report in which a TMJ ankylosis relapse was treated using rapid prototyping (selective laser sintering) for surgery planning is presented. After one year, the patient's buc...

Transparent ytterbium-doped yttria ceramics, 2 at.% Yb:Y2O3, were fabricated by hot uniaxial pressing in vacuum at 1550 °C/50 MPa followed a two-stage Hot Isostatic Pressing (HIPing) 1200–1400 °C/100 MPa, using nanopowders obtained self-propagating high-temperature synthesis (with lithium fluoride serving as sintering aid). The addition of LiF during the powder markedly changed morphology powde...

While preparing the composite preform in the powder metallurgy Lab, the various defects due to porosity, open crack and residual stresses are possible. This may lead to poor life and strength of materials. It is difficult to predict the defects in the form of pores physically in the powder metallurgy Lab. To simplify this kind of problem, the Scanning Electron Microscope (SEM) images are genera...

This article critically assesses the current status and future directions for the development of interfacial phase diagrams for applications in activated sintering and other fields. The origin of solid-state activated sintering is attributed to the enhanced mass transport in sintering-aid-based, nanoscale, quasi-liquid, interfacial films that are stabilized below the bulk solidus line. Interfac...