Temperature distribution for electrically conductive and non-conductive materials during Field Assisted Sintering (FAST)

Study and Suppression of the Microstructural Anisotropy Generated During the Consolidation of a Carbonyl Iron Powder by Field-Assisted Hot Pressing

“…[9,10] This method produces a fast generation of internal heat by Joule effect and accelerates the diffusion among iron atoms, which increases the kinetics of sintering. [11,12] The heating rate and the obtained densification are high, leading to the final consolidated sample in around 20 minutes. The powders are poured into an assembly of graphite tools, composed of several spacers, a cylindrical die, and two cylindrical punches to transmit the load.…”

Effects of ternary metal additions on corrosion of spark plasma sintered Ni-Fe alloys in H2SO4 and NaCl

“…Also, the die surface was enclosed in a permeable graphite felt (about 10 mm approx. thick) used as a heat resistor, thus minimizing heat loss due to temperature gradient and radiation [11,12]. Sintering operation was done in vacuum at constant pressure (50 MPa) and temperature (1000 o C) and was followed by soaking for 10 minutes at 1000 o C maximum temperature.…”

“…Diverse reports are available on imparts of alloying on the chemical, microstructural and phases characterization/behavior of different type of engineering materials. These include the super-alloys, steels and aluminum alloys [5][6][7], nickel nano-particles [8] and titanium base alloys, etc., and their corrosion behaviors [9] and control [10][11][12][13][14][15] in different media [16][17][18]. The current research development in the Ni-Fe-based austenitic matrix which falls under the category of Ni-based alloys is beginning to receive attention from researchers.…”

The effects of particle size distribution and sintering conditions on bending strength of sintered Ni-30%Fe alloys

“…The graphite foils afford easy removal of the sinter and significant reduction of temperature inhomogeneities. In addition, the die exterior was covered with ~10 mm thick porous graphite felt, used as a thermal insulation to reduce the radiation loss and possible temperature gradient [8][9]. Sintering was done in vacuum and at constant pressure of 30 MPa.…”

“…Though, there are reports on the binary alloys of Nickel with iron group elements. The gap still exists in relating and understanding the roles of diversities in powder metal grain sizes as regarding the densification and sintering parameters on the enhancing superior mechanical (bending strength) and magnetic characteristics (microstructure) of Ni-Fe alloy in particular [8][9][10][11]. There is still great necessity to investigate the Ni-Fe alloy systems more intensely.…”