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Gazprom recently said it had completely suspended gas supplies to Bulgarian Gas company and Polish Oil and Gas Company (PGNiG) because it was not being paid in rubles. Russia said it would resume gas supplies after it agreed to pay for them in rubles.
Bulgaria and Poland announced Monday that they have received a notice from Russia to suspend natural gas supplies from Monday.
Russian President Vladimir Putin on March 31 signed a presidential decree to settle gas trade with "unfriendly" countries and regions in rubles. When the new rules took effect on April 1, Presidential press secretary Dmitry Peskov said Russia would not immediately "cut off gas" to Europe, as the cost of gas supplies starting April 1 should be settled in the second half of April or May.
Because of the ever-changing international situation, the supply and prices of international bulk MoSi2 Powder are still very uncertain.
Introduction to Molybdenum Silicide MoSi2 Powder
Molybdenum silicide was discovered in 1906. Under different conditions, silicon and molybdenum can form molybdenum trisilicide (Mo3Si), molybdenum pentasilicate (Mo5Si3), and molybdenum disilicate (MoSi2). The most important one is the Molybdenum disilicide (MoSi2), which is a Dalton-type intermetallic compound. The atomic combination in its crystal structure shows the coexistence of metal bonds and covalent bonds, and has excellent high-temperature essential characteristics.
Molybdenum disilicide is an inorganic compound, the chemical formula is MoSi2, gray metal solid. Insoluble in most acids, but soluble in nitric acid and hydrofluoric acid. The two kinds of atoms have similar radii and electronegativity, which is similar to metal and ceramic. Molybdenum disilicide is electrically conductive and at high temperatures forms a passivation layer of silicon dioxide on the surface to prevent further oxidation.
It can be applied as high-temperature oxidation-resistant coating materials, electric heating elements, integrated electrode film, structural materials, composite reinforcement, wear-resistant materials, structural ceramics, and other fields of bonding materials.
Physicochemical Properties of Molybdenum Silicide MoSi2 Powder
MoSi2 is a kind of intermediate phase with the highest silicon content in the Mo-Si binary alloy system, and it is a Dalton-type intermetallic compound with a fixed composition. It has dual characteristics of metal and ceramic, and is a kind of high-temperature material with excellent performance. Good high-temperature oxidation resistance, oxidation resistance temperature up to 1600℃, and SiC equivalent; Moderate density (6.24g/cm3); Low thermal expansion coefficient (8.1×10-6K-1); Good electric conductivity; Higher brittle and ductile transition temperature (1000℃) below the hard brittleness of ceramics. Above 1000℃ it is metal-like soft plastic. MoSi2 is mainly used as heating elements, integrated circuits, high-temperature oxidation-resistant coating, and high-temperature structural material.
In MoSi2, molybdenum and silicon are bonded by metal bonds, while silicon and silicon are bonded by covalent bonds. Molybdenum disilicide is gray tetragonal crystal. Insoluble in general mineral acids (including aqua roya), but soluble in nitric acid and hydrofluoric acid mixed acid, has good high-temperature oxidation resistance, can be used as high temperature (<1700℃) oxidation atmosphere work heating element.
In an oxidizing atmosphere, a protective film is formed on the surface of dense quartz glass (SiO2) burned at a high temperature to prevent continuous oxidation. When the temperature of the heating element is higher than 1700℃, SiO2 protective film is formed, which is thickened at the melting point of 1710℃ and fused with SiO2 into molten droplets. It loses its protective ability due to its surface-extending action. When the element is used continuously under the oxidant, it forms a protective film again. It should be noted that this element cannot be used for long periods at 400-700℃ due to strong oxidation at low temperatures.
|Molybdenum Silicide MoSi2 Powder Properties|
|Other Names||molybdenum disilicide, MoSi2 powder|
|Appearance||gray to black powder|
|Melting Point||1900-2050 °C|
|Solubility in H2O||N/A|
Molybdenum Silicide MoSi2 Powder CAS 12136-78-6
Applications of Molybdenum Silicide MoSi2 Powder
MoSi2 is widely used in heating elements. Molybdenum disilicide heating elements can be used at temperatures up to 1800°C for electric furnaces used in laboratories and production environments in glass, steel, electronics, ceramics, and for heat treatment of materials. Although these components are brittle, they can operate at high power without aging, and their resistivity does not increase with operating time.
Main Supplier of Molybdenum Silicide MoSi2 Powder
Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and Nanomaterials, including silicon powder, nitride powder, graphite powder, zinc sulfide, calcium nitride, 3D printing powder, etc.
If you are looking for high-quality molybdenum silicide MoSi2 powder, please feel free to contact us and send an inquiry. ([email protected])
Cancer cells can "stretch out a big hand" and take away the mitochondria of immune cells. The Harvard Medical School research team cultured mouse and human breast cancer cells and immune cells, such as killer T cells, and used field emission scanning electron microscopy (FESEM) to observe the relationship between cancer cells and immune cells. interactive. Interestingly, they found that cancer cells stick out long nanotubes, typically within 100-1000 nanometers in diameter, each of which connects to multiple immune cells along the way. The researchers used the drug L-778123, which inhibits the formation of nanotubes, for treatment. The higher the concentration of L-778123, the better the treatment effect.
It is used in various high-tech fields, so the market demand for MoSi2 Powder will continue to rise. We are a quality supplier of MoSi2 Powder, please feel free to contact us.
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