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the O
formation O
of O
TiN S-MATE
particles S-CONPRI
, O
whose O
amount O
increases O
with O
the O
flow B-PARA
rate E-PARA
of O
nitrogen S-MATE
. O
There O
is O
no O
significant O
difference O
in O
the O
elastic B-PRO
moduli E-PRO
among O
individual O
layers O
. O
Increasing O
the O
flow B-PARA
rate E-PARA
of O
nitrogen S-MATE
results O
in O
an O
increase O
in O
the O
compression B-PRO
strength E-PRO
of O
the O
individual O
layers O
and O
a O
decrease O
in O
the O
ductility S-PRO
of O
individual O
layers O
. O
The O
Vickers B-PRO
hardness E-PRO
increases O
gradually O
from O
300 O
to O
400 O
HV O
for O
the O
base B-MATE
metal E-MATE
to O
∼1000 O
HV O
for O
the O
top O
layer S-PARA
of O
the O
Ti B-MATE
alloy E-MATE
, O
and O
the O
compressive B-PRO
strength E-PRO
of O
the O
Ti B-MATE
alloy E-MATE
reaches O
1.92 O
GPa S-PRO