What is hafnium carbide? Hafnium carbide is usually synthesized with hafnium dioxide (HfO2) and carbon in an inert or reducing atmosphere. The reaction temperature is 1900-2300℃. Hafnium carbide can form a solid solution with many compounds (such as ZrC, TaC, etc.).
What is the use of hafnium carbide?
1. Hafnium carbide can be used as an additive for cemented carbide, which is widely used in the fields of cutting tools and molds;
2. Hafnium carbide suitable for rocket nozzle materials, can be used in rocket nose cones, used in the aerospace field, and can also be used in nozzles, high-temperature linings, electrodes for arc or electrolysis;
3. Hafnium carbide used in nuclear reactor control rods. It is an ideal metal for making nuclear reactor control rods.
4. Used to prepare ultra-high temperature ceramics;
5. Reactant for synthesizing hafnium-containing organometallic polymer;
6. Used for coating.
Is hafnium carbide poisonous?
There are no reports of industrial poisoning. Carbide: Pure carbon has extremely low toxicity to humans and can be processed in the form of graphite or charcoal or even safely ingested.
Russia develops new materials to withstand high temperatures of 4200 degrees
Materials scientists at the Russian National University of Science and Technology have developed a hafnium cyanide ceramic that can theoretically withstand a high temperature of 4200 degrees Celsius. Related research results were published in the "International Ceramics" magazine. The performance of this new material with high temperature resistance and high hardness has been confirmed by computer modeling prediction.
According to the report, before this, the world's most recognized man-made substance with the highest temperature resistance and the most difficult to melt was tantalum hafnium carbide.
In an interview with reporters, Dmitry Moskovsky, director of the Research Center for Structure and Ceramic Nanomaterials of the National University of Science and Technology, said: "In order to obtain new materials, we have adopted a hafnium-carbon-nitrogen triple composite system, through self-diffusion The high-temperature synthesis method has obtained hafnium cyanide, that is, nitrogen-rich hafnium carbide."
According to the report, scientists believe that this new type of high temperature resistant material will be used to manufacture aerospace equipment and special military technology equipment. When an aircraft is flying at hypersonic speed or penetrating the atmosphere, its engine, wing surface, and fairing must withstand a high temperature of more than 2000 degrees Celsius, and it must also be able to withstand the influence of the external environment. The surface of these devices is generally covered with a strong and refractory ceramic composite thermal insulation protection layer.
What matter on the earth can come close to the sun without melting, or even isolating the sun’s heat?
The surface temperature of the sun is about 5,500 degrees Celsius, and the temperature of the inner core is as high as 15 million degrees Celsius. The single compound with the highest melting point on earth is hafnium carbide, which has a melting point of 3890 degrees Celsius. At present, the substance with the highest melting point known on the earth is a compound of hafnium, four tantalum hafnium pentacarbide, with a melting point of 4215°C. It is precisely because the alloy of hafnium has strong resistance to high temperature and corrosion, it is often used as the leading protective layer of rockets and aircraft.
Storage conditions of hafnium carbide powder:
It should be stored in a dry, cool and sealed environment, not exposed to the air, and heavy pressure should be avoided, and transported as ordinary items.
Packaging and transportation of hafnium carbide powder:
Packed in a double-layer plastic bag inside, it can be filled with argon in a vacuum; it can be evacuated and filled with argon for protection.
Packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/drum, of course, the packing specifications can be customized according to your requirements.
Transportation: Once the payment receipt is received, it can be shipped out as soon as possible by sea, air, or express.
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