Thermoelectric materials are sometimes prepared using a sintering process in which the achievement of a high density is often one of the objectives. However, it has recently been shown that the introduction of a highly porous material is desirable in synthetic transverse thermoelements. Porosity may also be an advantage in conventional longitudinal thermoelectric modules in which a high thermal...

spark plasma sintering (sps) method, as plasma activated sintering, is a method applicable for rapid sintering of metals and ceramics. owing to the advantage of rapid heating, the alumina ceramics obtained by sps have a grain size and density comparable to those of hot pressed ones. the increase of densification rate may be related to some difference in ion transport characteristics. this study...

During sintering a powder compact gains strength through low-temperature interparticle bonding, usually induced by solid-state surface diffusion, followed by further strength contributions from high-temperature densification. In cases where a liquid phase forms, sintering densification is accelerated and shape retention is sustained while open pores remain and contribute capillary forces. Unfor...

The application of an electric field over a ceramic powder compact at elevated temperatures gives rise to “flash sintering”. phenomenon occurs critical combination and temperature, which leads rapid increase in the power dissipated within sample. This results sample densification far shorter timescales than those required with conventional sintering. paper reports first successful pressureless ...

Abstract—Through use of novel modern/rapid processing techniques such as screen printing and Near-Infrared (NIR) radiative curing, process time for the sintering of sintered nickel plaques, applicable to alkaline nickel battery chemistries, has been drastically reduced from in excess of 200 minutes with conventional convection methods to below 2 minutes using NIR curing methods. Steps have also...

Here we show that the conventional concept of using SiO2 patterned Si substrates to selectively grow 3D carbon nanotube structures can also be applied to a dip-coating method. High-quality vertically aligned single-walled carbon nanotube (SWNT) patterns can be easily obtained by this protocol. Apart from the sintering of catalyst into Si at high temperature, the difference in surface wettabilit...

Iron ore sintering processes constitute significant sources of dioxins, and studies have confirmed a close correlation between polychlorinated naphthalenes (PCNs) and dioxin formation. Thus, iron ore sintering processes are thought to be a potential source of PCNs, although intensive investigations on PCN emissions from sintering processes have not been carried out. Therefore, the aim of the pr...

The aim of this study is to investigate the effect of the sintering schedule on microstructure and properties of hydroxyapatite which is produced by different synthesizing methods. Hence, wet-chemical precipitation and solid-state reaction were performed to prepare nano-sized hydroxyapatite (HA) powders. Powders were then uniaxially pressed and sintered by varying temperatures and times. XRD an...

High-chromium vanadium and titanium magnetite (HCVTM) sinter has poor properties. The coke ratio has an important effect on the behavior of HCVTM sintering as it affects the mineral phases in the high-chromium vanadium and titanium sinter (HCVTS) via changing the sintering temperature and atmosphere. In this work, the sintering behavior of HCVTM mixed with varying coke ratios was investigated t...

We investigated the sintering temperature dependency on properties of Na2Zn2TeO6 (NZTO) solid electrolyte synthesized via a conventional solid-state reaction method. Sintering calcined NZTO powder, which was obtained by calcination precursor at 850℃, changed in range from 650 to 850℃. X-ray diffraction analysis showed that P2-type layered phase formed all sintered samples without forming any se...