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Hafnium Plate Hafnium Plate

Hafnium Plate

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Hafnium plates have the following characteristics:
1. Physical characteristics:
• High melting point: the melting point of hafnium is as high as 2233 ° C, which allows the hafnium plate to maintain a stable structure and performance in a high temperature environment, and can be used to manufacture equipment components that work under high temperature conditions, such as aircraft engines, heat resistant parts of rocket engines, etc.
• High density: Hafnium has a density of about 13.31g/cm³, which is a high-density metal.The high density characteristics give hafnium plates an advantage in some applications where the weight and volume of the material are required, such as where increased weight or increased material density is required, hafnium plates can be a suitable material choice.
• Good electrical conductivity: Hafnium has certain electrical conductivity, although its electrical conductivity is not as good as common conductive metals such as copper and aluminum, but in some occasions where there are certain requirements for electrical conductivity and special properties such as high temperature resistance and corrosion resistance, the electrical conductivity of hafnium plates can meet the application needs, such as in electronic equipment such as electron beam welding and X-ray tubes.
• Metallic luster: Hafnium plate shows a gray appearance and metallic luster under standard conditions, and has a good appearance texture.
• High hardness: Hafnium is a harder metal, which makes the hafnium plate have high hardness and strength, can withstand greater external forces and pressures, and is not easy to deformation and damage.Its Mohs hardness is up to 400.
2. Chemical properties:
• Good corrosion resistance: Hafnium is chemically stable at room temperature, has good corrosion resistance, and is not easily attacked by general acid and alkali aqueous solutions.However, at high temperatures or in certain chemical environments, hafnium will react with gases such as oxygen and nitrogen.
• Can form compounds: Hafnium is often +4 valence in compounds, the main compound is hafnium oxide (HfO₂), which has three different variants, namely monoclinic variant, tetragonal variant and cubic variant (transformed at 1300℃).
3. Processing characteristics:
• High processing difficulty: the processing properties of hafnium are more sensitive to deformation and deformation temperature.On the one hand, the inevitable presence of impurity elements such as oxygen, zirconium and iron in hafnium will cause the ductility of hafnium to decline, and its cold working deformation capacity is generally not more than 25%;On the other hand, the hafnium ingot has coarse grain, easy enrichment of impurity elements between dendrites, a certain degree of segregation, and easy overburning of grain boundaries.Therefore, when processing hafnium plates, it is necessary to strictly control the processing parameters to ensure the quality of the plates.
• Machinability: Through reasonable processing technology, such as controlling the forging ratio, forging temperature, rolling deformation and rolling temperature, the coarse grains in the hafnium ingot and slab core can be fully broken, so that the internal and external microstructure of the hafnium plate is consistent, so as to obtain good corrosion and mechanical properties.
4. Nuclear characteristics:
• Large neutron absorption cross section: Hafnium has a large thermal neutron capture cross section and is an ideal neutron absorber, which makes hafnium plates have important applications in the nuclear industry as control rods and protection devices for nuclear reactors.
Product Description

The use of hafnium plate mainly includes the following aspects:

1. Nuclear industry:

• Nuclear reactor control rods: Hafnium has a large thermal neutron absorption cross section and is an ideal neutron absorber, so hafnium plates can be used to manufacture control rods for nuclear reactors, which can effectively control the rate of nuclear reactions and ensure the safe operation of nuclear reactors.

• Reactor structural materials: Its good plasticity, processing performance, high temperature resistance and corrosion resistance make it suitable for reactor structural materials, which can maintain stable performance in the complex environment of nuclear reactors.

2. Aerospace field:

• Engine components: Hafnium plates can be used to manufacture heat-resistant components of aircraft engines, such as turbine blades, combustion chambers, etc.In the high temperature, high pressure working environment, hafnium plate can maintain good mechanical properties and structural stability, helping to improve the performance and reliability of the engine.

• Rocket nozzle: rocket launch needs to withstand extremely high temperature and pressure, alloy materials containing hafnium have excellent high temperature resistance and thermal shock resistance, so hafnium plate is often used to manufacture rocket nozzle, to ensure the normal launch and operation of the rocket.

• Aircraft protective layer: some alloys containing hafnium can be used as protective layer materials for aircraft, such as the protective layer of spacecraft.These alloys have high creep strength, oxidation resistance and other characteristics, which can provide effective protection for spacecraft in the harsh space environment.

3. Electronics industry:

X-ray tube cathode: Hafnium easily emits electrons and can be used to manufacture cathodes for X-ray tubes, which have a wide range of applications in X-ray equipment in medical, industrial testing and other fields.

Electronic components: can be used to manufacture high-speed electronic tubes, microwave devices and other electronic components, using their special physical properties to meet the needs of electronic devices for high-performance materials.

• Semiconductor manufacturing: In the semiconductor manufacturing process, hafnium plates can be used to make components such as gate insulation for semiconductor chips.For example, hafnium dioxide has long been used as a gate insulator for microelectronics and integrated circuit dielectric devices, and its compatibility with integrated circuit processes is high, helping to improve the performance of semiconductor devices.

4. Chemical industry:

• Corrosion resistant parts: Hafnium plate has good corrosion resistance and can be used to manufacture corrosion resistant parts in chemical equipment, such as reactors, pipelines, valves, etc., and can maintain stable performance in some corrosive chemical production processes.

• Getter: Hafnium can be used as an getter for many inflation systems, which can remove unnecessary gases such as oxygen and nitrogen in the system to ensure the normal operation of the system and the quality of the product.

5. Special alloy collar


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