Results 251 to 260 of about 6,642 (291)
Some of the next articles are maybe not open access.
Numerical simulation of electric field assisted sintering
2021A fully coupled thermal-electric-sintering finite element model was developed and implemented to explore electric field assisted sintering techniques (FAST). FAST is a single step processing operation for producing bulk materials from powders, in which the powder is heated by the application of electric current under pressure. This process differs from
Brandon A. McWilliams +1 more
openaire +1 more source
Field Assisted Sintering Mechanisms
2012Field assisted sintering studies have produced a wealth of data about the densification behaviors of many powder systems. However, the sheer volume of work has not met with sufficient mechanistic descriptions of the processes in metal or ceramic systems.
ANSELMI TAMBURINI, UMBERTO +5 more
openaire +1 more source
Field‐Assisted Sintering of Nanocrystalline Titanium Nitride
Journal of the American Ceramic Society, 2000Nanosized TiN powder was densified via field‐assisted sintering at temperatures of 1150°–1350°C and a pressure of 66 MPa under vacuum. A maximum relative density of ∼97% and a maximum mean grain size of 150–200 nm were obtained. Densification and microstructural evolution have been discussed, in terms of superplasticity and electric‐field effects.
Joanna R. Groza +2 more
openaire +1 more source
Other Field-Assisted Sintering Techniques
2018In this chapter, the use of different types of electromagnetic radiation (infrared (IR), visible, and ultraviolet (UV)) for sintering of particulate materials is described. The radiation is directed onto the layers of particulate materials to induce rapid heating and consolidation into porous or dense structures.
Eugene A. Olevsky, Dina V. Dudina
openaire +1 more source
Structure–property relationship for sintered SiC by field assisted sintering technique
International Journal of Refractory Metals and Hard Materials, 2013Abstract This research is focused on utilizing the field assisted sintering technique (FAST) to produce dense SiC ceramic tiles and examine the sintering behavior of SiC with changing temperature, hold time, pressure, and heating rate. A preprocessed SiC powder with carbon and boron carbide additives and a mean particle size of 0.9 μm were used to ...
Sean Gephart +2 more
openaire +1 more source
Russian Journal of Non-Ferrous Metals, 2022
Abstract: In this study, a Mg22Al/10MgO composite could be produced at nearly full density by the field-assisted sintering technique at relatively low temperatures and for short time such as 400°C and 15 min under the vacuum-argon atmosphere. The Mg22Al matrix consists of 22 wt % Al, produced by mechanical alloying for 18h and then mixed 2 h with 10 wt
Tekin T., İpek R.
openaire +1 more source
Abstract: In this study, a Mg22Al/10MgO composite could be produced at nearly full density by the field-assisted sintering technique at relatively low temperatures and for short time such as 400°C and 15 min under the vacuum-argon atmosphere. The Mg22Al matrix consists of 22 wt % Al, produced by mechanical alloying for 18h and then mixed 2 h with 10 wt
Tekin T., İpek R.
openaire +1 more source
Unified model of field assisted sintering and related phenomena
Scripta Materialia, 2019Abstract Critical elements of the model are temperature-assisted generation of free electrons, field-assisted transport and trapping of free electrons to generate defects, segregation of defects to dislocations and grain boundaries through elastic and electrostatic interactions, and creation of percolation paths along grain boundaries.
openaire +1 more source
Field assisted sintering of nanocrystalline titanium nitride powder
Powder Metallurgy and Metal Ceramics, 2011The effect of field assisted sintering (FAS) on the compaction of TiN ceramics is examined using a nanosized TiN powder. Microstructural evolution at different stages of FAS is evaluated using electron microscopy. Coarse spherical particles (1–5 μm) are found at 700°C.
V. G. Kolesnichenko +6 more
openaire +1 more source
Surface oxide debonding in field assisted powder sintering
Materials Science and Engineering: A, 1999Field activated sintering techniques (FAST) have been applied to two high-temperature powder materials: tungsten and NiAl. High and atomic resolution electron microscopy (HREM/ARM) of tungsten powder sintered via FAST showed essentially clean boundaries. Analytical transmission electron microscopy (TEM) of FAST sintered NiAl also showed boundaries free
K.R Anderson +3 more
openaire +1 more source
Field assisted sintering of graphene reinforced zirconia ceramics
Ceramics International, 2015Abstract Three mol. % yttria stabilized zirconia (3Y-TZP) with Graphene platelets (GNPs) powder mixture was produced by ball milling using dimethyl formamide (DMF) as dispersion media. The GNPs-reinforced 3Y-TZP composites were densified (~99%) by field assisted sintering technology (FAST).
Fei Chen +8 more
openaire +1 more source