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@ARTICLE{Laptev:851526,
author = {Laptev, Alexander M. and Bram, Martin and Vanmeensel, Kim
and Gonzalez-Julian, Jesus and Guillon, Olivier},
title = {{E}nhancing efficiency of field assisted sintering by
advanced thermal insulation},
journal = {Journal of materials processing technology},
volume = {262},
issn = {0924-0136},
address = {Amsterdam [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2018-05152},
pages = {326 - 339},
year = {2018},
abstract = {The influence of advanced thermal insulation on energy
consumption and temperature distribution during electric
field assisted sintering of conductive stainless steel
powder and non-conductive zirconia powder was investigated.
Four types of tool setup were considered: i) without
insulation, ii) with die wall insulation, iii) with
additional insulation of die faces and iv) with spacers
manufactured from carbon fiber reinforced carbon composite
(CFRC). The influence of thermal insulation on energy
consumption was experimentally studied for samples with
diameter of 17 mm. The temperature distribution in samples
with diameters of 17 mm, 50 mm and 150 mm was modeled
using the Finite Element Method. The power consumed during
dwell was almost half the value when die wall insulation was
used. The additional insulation of die faces and the
application of CFRC spacers provide a threefold decrease in
power during sintering of steel powder and a fivefold
reduction during sintering of zirconia powder. The advanced
thermal insulation significantly homogenizes the temperature
distribution within samples of small and medium size. The
advanced thermal insulation provides a strong decrease in
the temperature gradient inside large conductive sample with
a diameter of 150 mm. However, insulation apparently
cannot ensure acceptable temperature homogeneity within
non-conductive parts of such diameter. The reason for this
is the specific current path and related heat concentration
near the sample edge.},
cin = {IEK-1},
ddc = {670},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {899 - ohne Topic (POF3-899)},
pid = {G:(DE-HGF)POF3-899},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000445986900032},
doi = {10.1016/j.jmatprotec.2018.07.008},
url = {https://juser.fz-juelich.de/record/851526},
}