Physical and chemical properties of molybdenum disulfide powder
The African Development Bank will finance $25 billion by 2025 to support Africa's fight against climate change, the bank's president said at the bank's annual meeting in Accra, Ghana.
He noted that climate change has had many negative impacts on the continent, causing natural disasters such as droughts, cyclones, and floods. Climate change costs Africa between $7 billion and $15 billion a year. "Africa has no choice but to address climate change."
To ensure Africa's food supply, the African Development Bank has delivered climate-friendly seeds to 12 million farmers in 27 countries in the past two years under the "Technology for Agricultural Change in Africa" program, he said.
In the area of renewable energy, the African Development Bank is implementing a $20 billion "Desert Power" initiative in the Sahel that is expected to power 250 million people, he said.
US President Joe Biden recently wrapped up his five-day trip to Asia with a summit of leaders of the "Quad" security Dialogue.
Biden has promoted a number of economic and security cooperation initiatives during his visit aimed at deepening ties with Indo-Pacific Allies and partners in response to China's growing influence in the region. Some analysts in the United States believe the most significant announcement may be an initiative to share maritime information to combat illegal activities. But other experts say Biden's move sets a good framework for more security cooperation, though it remains to be seen whether concrete action will follow.
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Overview of molybdenum disulfide powder
Molybdenum disulfide is an inorganic substance. The chemical formula is MoS2, which is the main component of molybdenite. It is a black solid powder with metallic luster. The melting point is 2375 ℃, the density is 4.80g/cm³ (14 ℃), and the Mohs hardness is 1.0-1.5. Molybdenum disulfide begins to decompose at 1370 °C and decomposes into molybdenum metal and sulfur at 1600 °C. Molybdenum disulfide is oxidized when heated to 315 ℃ in air. Molybdenum disulfide is insoluble in water, dilute acid and concentrated sulfuric acid, generally insoluble in other acids, alkalis and organic solvents, but soluble in aqua regia and boiled concentrated sulfuric acid. Slow oxidation occurs at 400 ℃ to form molybdenum trioxide. Molybdenum disulfide can be heated to react with chlorine to form molybdenum pentachloride.
Molybdenum disulfide reacts with alkyl lithium under control to form an intercalation compound (intercalation compound) LixMoS2. If it reacts with butyllithium, the product is LiMoS2.
Molybdenum disulfide has a high active sulfur content, which tends to corrode copper and is discussed in many books and papers on lubricant additives. In addition, when parts made of copper and its alloys need to be lubricated, it is not necessary to choose lubricating products containing molybdenum disulfide, and copper corrosion inhibitors are also required.
Physical and chemical properties of molybdenum disulfide powder
Insoluble in water and dilute acid, it can be corroded by concentrated sulfuric acid, concentrated nitric acid, boiling concentrated hydrochloric acid, aqua regia, pure oxygen, fluorine and chlorine. It is insoluble in other acids, bases, solvents, petroleum and synthetic lubricants. It has good chemical and thermal stability, cannot react with general metal surfaces, and does not corrode rubber materials. It is a non-magnetic material and a compound with semiconductor properties. Molybdenum disulfide mo-S has many edges, easy to peel between layers, and has good anisotropy. S has strong adhesion to metal and can always adhere to the metal surface and play a lubricating role. Molybdenum disulfide used as lubricant has high compressive strength and wear resistance, excellent adhesion, low friction coefficient (0.03-10.08), film structure characteristics, film stability under high pressure; high lubricating performance at high temperature (1200℃), low temperature (-190℃), high speed, high pressure, ultra-low temperature, high vacuum conditions. Molybdenum disulfide begins to oxidize to molybdenum trioxide at 400 °C, and rapidly oxidizes to molybdenum trioxide above 540 °C. In an inert atmosphere, it sublimates at 450 °C, decomposes at 1370 °C, and decomposes into molybdenum and sulfur at 1600 °C. Molybdenum disulfide reacts with chlorine on heating to form molybdenum pentachloride; LiXMoS2 is an intercalated interlayer compound synthesized by controlled reaction with alkyl lithiums. Low toxicity.
Application of molybdenum disilicide powder
Molybdenum disilicide is used in high temperature anti-oxidation coating materials, electric heating elements, integrated electrode films, structural materials, composite material reinforcements, wear-resistant materials, and structural ceramic connecting materials. Distributed in the following industries:
1) Energy and chemical industry: electric heating elements, high temperature heat exchangers of atomic reactor devices, gas burners, high temperature thermocouples and their protective tubes, smelting vessels and crucibles (for smelting sodium, lithium, lead, bismuth, tin) and other metals ).
2) Microelectronics industry: MoSi2 and some other refractory metal silicides Ti5Si3, WSi2, TaSi2, etc. are important candidates for large-scale integrated circuit gate and interconnect films.
3) Aerospace industry: As a high temperature anti-oxidation coating material, it has been widely and deeply researched and applied. Especially as materials for turbine engine components such as blades, impellers, combustors, nozzles and seals.
4) Automobile industry: turbocharger rotors, valve bodies, spark plugs and engine parts for automobiles.
Molybdenum disilicide can also be used in the heating elements of ceramic heaters. Molybdenum silicide maintains good oxidation resistance by forming a protective film on the surface even at high temperatures of 1700°C. Molybdenum silicide is used as a structural material for high temperature components in aerospace and automotive gas turbines, gas combustion nozzles and high temperature filters.
Molybdenum disilicide powder price
The price of molybdenum disilicide varies randomly with factors such as production costs, transportation costs, international conditions, exchange rates, and supply and demand in the molybdenum disilicide market. Tanki New Materials Co., Ltd. aims to help industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full range of customized services. If you are looking for molybdenum disilicide material, please feel free to contact for the latest price of molybdenum disilicide.
Molybdenum Disilicide Powder Supplier
As a global molybdenum disilicide supplier, Tanki New Materials Co., Ltd.has extensive experience in the performance, application and cost-effective manufacturing of advanced and engineered materials. The company has successfully developed a series of powder materials (titanium silicide, tantalum silicide, zirconium silicide, etc.). High-purity targets, functional ceramics and structural devices, and provide OEM services.
|Molybdenum Disulfide Properties|
|Other Names||Molybdenum Disulfide, Molybdenum Sulfide, MoS2|
|Compound Formula|| MoS2 |
|Molecular Weight||160.07 g/mol|
|Appearance|| black/lead-gray solid|
|Melting Point||2,375 °C (4,307 °F; 2,648 K)|
|Solubility in H2O (water)||insoluble|
|Molybdenum Disulfide Health & Safety Information|
|Transport Information||NONH for all modes of transpor|
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