Dysprosium - Tungsten Electrode Material Production Process
- Details
- Category: Tungsten Information
- Published on Sunday, 06 September 2015 14:12
The article mainly describes dysprosium - tungsten electrode material production process, as follows:
Material: high-purity tungsten powder, dysprosium oxide powder and metal dysprosium powder.
Characteristics analysis:
(1) High-purity tungsten powder: Grade: FW - 1, high purity tungsten powder
The average particle size: FSSS 1.67μ
Impurity content (PPM)
|
Fe |
Mn |
Al |
Ca |
Si |
Co |
As |
C |
Mo |
O |
|
21 |
13 |
13 |
13 |
13 |
19 |
13 |
33 |
130 |
900 |
(2) Dysprosium oxide powder: Dy2O3> 99.3% white powder.
(3) Metal dysprosium powder: purity of greater than 99.9%
Tb + Ho + Er + Y = 0.1%
Hydrogenate the bulk dysprosium at high temperature, dehydrogenate in vacuum space for standby application after crushing and sieving.
Mixing the raw materials fully according to a certain ratio in the mixer, then molding with cold isostatic pressure, sintering at high temperature in hydrogen after pre-sintering. Measure the hardness, density, dysprosium content and microstructure. Then, testing. Then analyzing the used electrode’s dysprosium content.
Remarks:
Dysprosium, silver-white metal, soft and can be cut with a knife; melting point is 1412 ° C, the boiling point of 2562 ° C, and density of 8.55 g / cm 3; Dysprosium is mainly used in the manufacture of new lighting dysprosium lamp; dysprosium can be used for reactor control material; dysprosium compounds can be used as a catalyst in the refining industry.
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