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Ta10W
Tantalum-based alloys have the characteristics of high temperature resistance, high strength and good chemical stability, and are indispensable materials in the fields of aviation industry, atomic energy industry and high temperature technology.
Mechanical properties of Ta10W（21℃）
| Elastic Modulus /Mpa | Yield Strength /Mpa | Tensile Strength /Mpa | Elongation /% | Material Form |
| 203890 | 471 | 562 | 25 | various types |
Physical Properties of Ta10W
| Grade | Composition | Physical Properties | |||||
| Density /g.cm³ |
Melting Point /℃ |
Coefficient of Linear Expansion /10K | Recrystallization Temperature /℃ | Annealing Temperature /℃ |
Extensional Brittle Transition Temperature /℃ | ||
| Ta10W | Ta10W-0.03Mo-0.1Nb | 16.84 | 3033 | 3.74(1649℃) | 1316~1538 | 1203~1232 | -196 |
Forms of Ta10W
Features of Ta10W
High temperature and high strength, used in the aerospace industry.
Corrosion resistance
In almost any environment, tantalum quickly forms a surface oxide film that tightly wraps the metal substrate. This oxide film is extremely thin and dense, impermeable to almost all media, and can heal itself once it is damaged. Thanks to such a protective film, tantalum has extremely excellent corrosion resistance properties.
Adding a certain amount of tungsten element to tantalum can improve the corrosion resistance of metal tantalum, such as Ta10W.
Phase Diagrams of Ta10W
Processing method of Ta10W
Powder metallurgy method of vacuum high temperature sintering, electron beam furnace (EB), vacuum consumable arc furnace (VAR) vacuum melting method are ideal common methods for preparing Ta10W ingot blanks.
Rotary forging is one of the main means of tungsten rod (rod) production.
Process flow of Ta10W
The process of swaging sintered tungsten and its alloy strips into rod (rod) material is called swaging process, and the process is as follows:
Strategies for Corresponding Oxidation
The surface-purified Ta10W will oxidize as the temperature increases, and the surface color will also change. Heating at 500 ℃ for a short time produces a gray-black oxide film, and prolonging the holding time, the oxide film becomes white. The oxide film formed at low temperature has a protective effect, which slows down the oxidation rate. At high temperature, the protective oxide film is destroyed and the oxidation rate is accelerated..
Therefore, Ta10W tubes, rods, and wires can be directly cold processed at room temperature, and hot processing must be coated with an anti-oxidation layer, or in a vacuum state or in an inert gas protective atmosphere (usually argon).
Application of Ta10W
Due to the advantages of high melting point, corrosion resistance and good cold working performance, Ta10W has been more and more widely used in chemical, aerospace, electronics and other industrial fields and medical treatment.
- Chemistry: As an excellent corrosion-resistant material, its corrosion resistance is better than that of titanium zirconium. In sulfuric acid, nitric acid, hydrochloric acid, aqua regia, perchloric acid, chloride, bromide, hydrobromic acid, phosphoric acid; in nitrogen oxides, chlorine oxides, hypochlorous acid, organic acids (including chloroacetic acid) ; Ta10W has very good corrosion resistance in hydrogen peroxide and all salts whose hydrolysis reaction does not produce free hydrofluoric acid or strong base.
- Aerospace industry: Ta10W rods can be used as heat-resistant and high-strength materials for supersonic aircraft, rockets, and missiles, as well as control and adjustment parts. It can be used at high temperature of 2500℃.
- High temperature treatment: it is the main material for high temperature vacuum furnace above 1600℃. In high temperature vacuum furnace, Ta10W can be used as supporting accessories, heaters, heat shields, etc. It is more stable and easier to process than tungsten and molybdenum.