Tantalum alloy sheet is a metal sheet made of high-purity tantalum mixed with other elements. Tantalum is usually mixed with molybdenum, nickel, titanium, and other elements to make different alloys to increase the characteristics of tantalum materials and change their physical and chemical properties. The alloy plate has the characteristics of extremely high corrosion resistance, wear resistance, tensile strength, and hardness, and is suitable for applications in harsh environments such as high temperature, high pressure, acid, and alkali resistance, such as aerospace, chemical, electronic, medical equipment, and other fields.
There are many types of tantalum plates, and the specific physical and chemical properties depend on the specific alloy composition.
1. Generally speaking, tantalum alloy plate has the following physical properties
- Density: It is usually between 16-18 g/cm3, which is slightly lower than that of pure tantalum.
- Strength: The strength of the tantalum alloy plate is very high, and the specific value depends on the specific alloy composition and processing method.
- Coefficient of Expansion: It has a relatively small coefficient of expansion, making it suitable for applications in high-temperature environments.
- Thermal conductivity: It has low thermal conductivity, so it can be heat treated at high temperatures without excessive heat sources.
- Conductivity: The lower conductivity of the tantalum sheet leads to different relative properties and behavior in electrical and electronic applications.
2. The chemical properties of tantalum alloy sheet also depend on its specific alloy composition, the following are some common characteristics
- Corrosion resistance: It has good corrosion resistance in common acid, hydrofluoric acid, and alkali solutions.
- Reactivity: It does not react readily with other compounds, so it can be used in applications requiring "inert" metals such as redox reactions.
- Stability: It is stable at high temperatures, so it is suitable for applications at high temperatures.
3. Chemical Composition
|
Composition（%） |
||
|
|
Grade |
|
|
|
Ta1 |
Ta2 |
|
Ta |
＞99.95 |
＞99.95 |
|
Nb |
-------- |
-------- |
|
Fe |
0.005 |
0.03 |
|
Si |
0.005 |
0.02 |
|
Ni |
0.002 |
0.005 |
|
W |
0.01 |
0.04 |
|
Mo |
0.01 |
0.03 |
|
Ti |
0.002 |
0.005 |
|
Nb |
0.03 |
0.1 |
|
O |
0.015 |
0.02 |
|
C |
0.01 |
0.01 |
|
H |
0.0015 |
0.0015 |
|
N |
0.01 |
0.01 |
4. The production process of tantalum alloy sheet is divided into the following steps
- Raw material preparation: High-purity tantalum and other alloying elements are used as raw materials to manufacture tantalum alloy blanks.
- Melting: Put the tantalum alloy billet into a high-temperature furnace for melting to make it into a liquid state.
- Casting: The molten tantalum alloy is poured into a pr-designed mold and cooled to become a solid body.
- Heat treatment: The tantalum alloy plate is heat treated to make its structure more dense and stronger.
- Cold rolling: put the heat-treated tantalum alloy plate into a cold rolling mill, and press and deform it according to the required thickness to make it reach the required thickness and quality.
- Surface treatment: After treatment, the surface of the tantalum alloy plate is processed by grinding and polishing to make the surface smooth and have good corrosion resistance.
- Inspection: Strict inspection of tantalum sheets, including appearance quality, chemical composition, physical properties, etc.
- Packing: Pack the tantalum alloy plate, conduct quality inspection, and finally deliver to the user.
The above are the basic steps of the production process of tantalum alloy sheets, and the specific production process may vary with different manufacturers.
5. Tantalum Sheet Pictures
6. Application Fields
Tantalum alloy sheet can be applied in many fields, the following are some of its main application areas:
1) Chemical industry: It is used in equipment, reactors, heat exchangers, etc. for the manufacture of chemicals such as acids, alkalis, and salts. It is very resistant to corrosion and high temperature and pressure in the chemical production process.
2) Semiconductor industry: It is used to manufacture high-purity, high-temperature, and highly corrosion-resistant manufacturing tools and devices, such as ion implantation equipment, crimping machines, and electrolyte membranes for lithium-ion batteries.
3) Aerospace industry: It is used in the manufacture of aero-engine components, blades, and nozzles in gas turbines, spacecraft parts, etc. Due to its high temperature, high strength, and corrosion resistance, it is increasingly used in aerospace equipment.
4) Pharmaceutical industry: It can be used in the manufacture of medical devices and artificial implants because it is a biological material that has good compatibility with human tissue and will not cause side effects to the human body.
5) Other fields: It can also be used in the nuclear industry and oil refining industry, etc.
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