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A kind of filamentous tantalum material made from tantalum powder by rolling, drawing and other plastic processing methods.
Grade | Chemical composition (%) | |||||||||||
C | N | O | H | Fe | Si | Ni | Ti | Mo | W | Nb | Ta | |
Ta1 | 0.01 | 0.005 | 0.015 | 0.0015 | 0.005 | 0.005 | 0.002 | 0.002 | 0.01 | 0.01 | 0.05 | blance |
Ta2 | 0.02 | 0.025 | 0.03 | 0.005 | 0.03 | 0.02 | 0.005 | 0.005 | 0.03 | 0.04 | 0.1 | blance |
TaNb3 | 0.02 | 0.025 | 0.03 | 0.005 | 0.03 | 0.03 | 0.005 | 0.005 | 0.03 | 0.04 | 1.5~3.5 | blance |
TaNb20 | 0.02 | 0.025 | 0.03 | 0.005 | 0.03 | 0.03 | 0.005 | 0.005 | 0.02 | 0.04 | 17~23 | blance |
TaNb40 | 0.01 | 0.01 | 0.02 | 0.0015 | 0.01 | 0.005 | 0.01 | 0.01 | 0.02 | 0.05 | 35~42 | blance |
TaW2.5 | 0.01 | 0.01 | 0.015 | 0.0015 | 0.01 | 0.005 | 0.01 | 0.01 | 0.02 | 2.0~3.5 | 0.5 | blance |
TaW7.5 | 0.01 | 0.01 | 0.015 | 0.0015 | 0.01 | 0.005 | 0.01 | 0.01 | 0.02 | 6.5~8.5 | 0.5 | blance |
TaW10 | 0.01 | 0.01 | 0.015 | 0.0015 | 0.01 | 0.005 | 0.01 | 0.01 | 0.02 | 9.0~11 | 0.1 | blance |
Diameter/mm | φ0.20~φ0.25 | φ0.25~φ0.30 | φ0.30~φ1.0 |
Tolerance/mm | ±0.006 | ±0.007 | ±0.008 |
Tantalum wire is the most used in the electronics industry and is mainly used for the anode lead of tantalum electrolytic capacitors. Tantalum capacitors are the best capacitors, and about 65% of the world’s tantalum is used in this field.
Tantalum wire can be used to compensate for muscle tissue and to suture nerves and tendons.
Tantalum wire can be used for heating parts of a vacuum high-temperature furnace.
High anti-oxidation brittle tantalum wire can also be used to make tantalum foil capacitors. It can work in potassium dichromate at high temperature (100 ℃) and extremely high flash voltage (350V).
In addition, tantalum wire can also be used as a vacuum electron cathode emission source, ion sputtering, and spray coating materials.
There are two manufacturing methods: powder metallurgy and smelting. (1) The processing process of tantalum wire by powder metallurgy is as follows: raw material (tantalum powder)→ mixing → forming → vertical melting → rotary forging → intermediate annealing → drawing → annealing of finished products → quality inspection → packaging and storage. (2) The technological process of smelting tantalum wire is: raw material (tantalum powder)→ mixing → forming → pre-sintering → electron beam melting → fine forging → intermediate annealing → rotary forging → intermediate annealing → drawing → annealing of finished products → quality inspection → packaging and storage.
Good ductility, good machinability
Good plasticity
High melting point metal 3017Dc
Excellent corrosion resistance
High melting point, high boiling point
Very small coefficients of thermal expansion
Good capability of absorbing and releasing hydrogen
