Lanthanum Tungsten Electrode Composition from Lanthanum Tungsten Electrode Preparation Materials
- Details
- Category: Tungsten Information
- Published on Monday, 10 August 2015 17:31
- Written by Yahong
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Tungsten trioxide is one of the materials used for the preparation of lanthanum tungsten electrode, whose main composition is WO3, and its impurities are Al, Ca, Cu, Ni and the like.
|
Grade |
WO3 (%,min) |
Impurity content % （max ） |
|||||||
|
Ni |
Mo |
Cu |
Al |
S |
K |
Mg |
Pb |
||
|
WO₃-1 |
99.95 |
0.0007 |
0.002 |
0.0003 |
0.0005 |
0.0007 |
0.001 |
0.0005 |
0.0001 |
|
WO₃-2 |
99.5 |
- |
0.03 |
- |
0.0015 |
0.006 |
0.005 |
0.01 |
- |
|
Impurity content %（max） |
|||||||||
|
Ca |
Na |
Bi |
As |
Mn |
Sb |
Fe |
P |
Si |
Ti |
|
0.0015 |
0.001 |
0.0001 |
0.001 |
0.0005 |
0.0003 |
0.001 |
0.0007 |
0.001 |
0.001 |
|
0.01 |
0.005 |
- |
0.01 |
- |
- |
0.04 |
0.004 |
0.005 |
- |
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