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converted O
to O
Cr3C2 O
at O
950 O
°C O
in O
a O
gas S-CONPRI
atmosphere O
containing O
76 O
vol. O
% O
Ar S-ENAT
, O
4 O
vol. O
% O
H2 O
, O
20 O
% O
vol. O
% O
CH4 O
. O
This O
process S-CONPRI
was O
repeated O
multiple O
times O
to O
construct O
layered B-CONPRI
structures E-CONPRI
representative O
of O
additively B-MANP
manufactured E-MANP
refractory O
ceramics S-MATE
. O
X-ray B-CHAR
diffraction E-CHAR
characterization O
and O
quantitative B-CONPRI
phase E-CONPRI
analysis O
of O
each O
converted O
layer S-PARA
indicated O
that O
the O
average S-CONPRI
phase O
fraction S-CONPRI
of O
Cr3C2 O
present O
in O
the O
multi-layered O
samples S-CONPRI
following O
conversion O
from O
Cr/Cr2O3 O
and O
Cr3C2/Cr/Cr2O3 O
precursors O
was O
94.5 O
wt O
% O
( O
SD O
= O
0.92 O
) O
and O
98.8 O
wt O
% O
( O
SD O
= O
0.21 O
) O
respectively O
. O