Tantalum is a greyish silver, heavy, and very hard metal.
When pure, it is ductile and can be drawn into fine wire,
which can be used as a filament for evaporating metals such
as aluminium. The element has a melting point exceeded only
by tungsten and rhenium.
Niobium is a shiny, white, soft, and ductile metal, and takes
on a bluish tinge when exposed to air at room temperatures
for a long time. The metal starts to oxidize in air at high
temperatures, and when handled hot must be done so under a
protective atmosphere so as to minimize oxide production.
100000-120000μFV/g CAPACITOR TANTALUM POWDER
CHEMICAL
IMPURITY (PPM)
O ＜5500 , P＜120 , C＜50, Fe＜20, Ni＜15, Cr＜10, K＜30,
Mg＜5
PHYSICAL PROPERTIES
SBD 1.50±0.25g/cc, Fsss 1.40±0.20μm, -325 mesh ＜20%
ELECTRICAL PROPERTIES*
CV 100000-120000μFV/g, K Value 0.50±0.10nA/μFV, tgδ ＜59%
*Sintering temperature 1200℃
Formation voltage 20V
80000-100000μFV/g CAPACITOR NIOBIUM POWDER
CHEMICAL IMPURITY
(PPM)
O 6000-9000, H＜300, C＜50, N＜400, Fe＜50, Ni＜30, Cr＜30,
K＜15, Na＜10 PHYSICAL
PROPERTIES
SBD 1.2±0.1g/cc, Fsss 4.0±0.5μm, BET 1.3±0.2m2/g, -325
mesh ＜20%
ELECTRICAL PROPERTIES*
CV 80000-100000μFV/g, K Value ＜1.0nA/μFV, I ＜70μA/g,
BDV ＞60 V
*Sintering temperature 1150/1200℃
Formation voltage 30V
| Grade |
Impurity
(% Max) |
| O |
C |
N |
H |
Fe |
Nb |
W |
Si |
Mo |
| TD－1 |
0.01 |
0.005 |
0.003 |
0.002 |
0.0015 |
0.004 |
0.0015 |
0.002 |
0.001 |
| TD－2 |
0.01 |
0.005 |
0.005 |
0.002 |
0.002 |
0.04 |
0.03 |
0.002 |
0.01 |
Nb Ingot
| Grade |
Impurity
(% Max) |
| O |
C |
N |
H |
Fe |
Ta |
W |
Mo |
| ND－1 |
0.01 |
0.005 |
0.002 |
0.002 |
0.002 |
0.15 |
0.003 |
0.003 |
| ND－2 |
0.015 |
0.01 |
0.01 |
0.002 |
0.005 |
0.2 |
0.01 |
0.01 |
