Recently, covid 19 outbreak spreads in Shanghai, China. There are more than 25,000 new asymptomatic domestic infections every day. China is implementing a dynamic zero-out policy. A leading respiratory expert said the key to COVID-19 prevention and control is to minimize transmission and fatality rate. Omicron has a low case fatality rate but is highly transmissible and can still claim many lives in large outbreaks. "Total openness is not applicable in China. For China, we should keep to the dynamic zero-out and gradually open up."
However, "dynamic zero clearance" is not the pursuit of complete "zero infection". As the Novel Coronavirus has its own uniqueness and strong concealment, there may be no way to prevent the detection of cases at present, but rapid detection and prompt treatment must be carried out, as soon as one case is found, one case will be dealt with.
The situation in Shanghai is serious. As the financial center of China, Shanghai is a very important city, and the outbreak of the epidemic in Shanghai will put a great impact on China's economy. The current task is to contain the spread of the epidemic as soon as possible, to achieve social zero so that Shanghai's life and economy quickly return to normal.
As China plays an important role in the global supply chain, the outbreak will have a significant impact on the supply and prices of many Tantalum Carbide powder.
About Tantalum Carbide TaC Powder:
Tantalum carbide is a metallic cubic crystalline powder that forms a binary chemical compound family of tantalum and carbon. They are extremely hard, fragile refractory ceramic materials with metallic conductivity. They appear as brownish-gray powders and are usually processed by sintering. It belongs to the sodium chloride type cubic crystal system. At present, tantalum carbide is also used as a cemented carbide sintered grain growth inhibitor, which has a significant effect on inhibiting grain growth, with a density of 14.3g/cm3.
Tantalum carbide is insoluble in water, hardly soluble in inorganic acid, soluble in a mixed acid of hydrofluoric acid and nitric acid, and can be decomposed. Strong oxidation resistance, easily melted and decomposed by potassium pyrosulfate. Tantalum carbide has high electrical conductivity, with a resistance of 30Ω at room temperature, showing superconducting properties. Tantalum carbide can be used in powder metallurgy, cutting tools, fine ceramics, chemical vapor deposition, hard wear-resistant alloy tools, tools, molds, and wear-resistant and corrosion-resistant structural components to improve the toughness of the alloy. The sintered body of tantalum carbide is golden yellow and can be used as a watch decoration.
The bond between tantalum carbide and carbon atoms is a complex mixture of ions, metals and covalent contributions, and these carbides have very hard and brittle materials due to strong covalent components. For example, TAC has a microhardness of 1600-2000 kg/mm2 (~9μH) and an elastic modulus of 285gPa, and the corresponding values of tantalum are 110kg/mm2 and 186gPa. The carbon content in TAC increases hardness, yield stress and shear stress.
As an important cermet material, tantalum carbide is sometimes added to the tungsten carbide alloy when it is commercially used for cutting applications. Depending on the purity and measurement conditions, the melting point of tantalum carbide reaches its peak at about 3880°C. This value is the highest value among binary compounds. Only tantalum carbide ha can have a slightly higher melting point of about 3942°C, while the melting point of carbide clam is comparable to TaC. Feel free to send an inquiry to get the latest price if you would like to buy Tantalum Carbide TaC Powder in bulk.
Technical parameters of Tantalum carbide TaC powder
CAS number: 12070-06-3
Tantalum carbide TaC powder True Density: 13.9 g/cm3
Tantalum carbide TaC powder Bulk Density: 2.5g/cm3
Tantalum carbide TaC powder Crystal Structure: Cubic
Tantalum carbide TaC powder APS: 1000 nm (Can be customized)
Tantalum carbide TaC powder SSA: 15 m2/g
Tantalum carbide TaC powder Purity: 99+%
Tantalum carbide TaC powder Solubility in water: insoluble
Tantalum carbide TaC powder Appearance: Black-gray odorless powder
|
T.C |
F.C |
O |
N |
Al |
Fe |
Na |
Ca |
K |
Si |
|
>6.32% |
<0.08% |
<0.3% |
<0.003% |
<0.004% |
<0.042% |
<0.003% |
<0.003% |
<0.004% |
<0.003% |
Properties and Applications of Tantalum carbide TaC powder:
Tantalum carbide (TaC) is an extremely hard (Mohs hardness 9-10) refractory ceramic material, commercially used in tool bits for cutting tools. The hardness is exceeded by diamond.
It is a heavy, brown powder usually processed by sintering, and an important cermet material.
It is sometimes used as a fine-crystalline additive to tungsten carbide alloys.
Tantalum carbide has the distinction of being the stoichiometric binary compound with the highest known melting point, at 4150 K (3880°C) and boiling point, at 5500 oC.
The substoichiometric compound TaC0.89 has a higher melting point, near 4270 K (4000°C).
How is Tantalum Carbide TaC Powder produced?
The Tac powder of the desired composition is prepared by adding a mixture of heating and graphite powder in a vacuum or an inert gas atmosphere (argon). The heating was performed at a temperature of about 2000 ° C using a furnace or arc melting. The alternative technology is reduced by carbon tantalum oxide in a vacuum or hydrogen atmosphere at a temperature of 1500-1700 ° C. This method is used for carbonized tantalum in 1876, but it lacks thermometrically controlled control of the product. Direct production TAC is produced directly from the component by self-propagating high-temperature synthesis.
Application of Tantalum Carbide TaC Powder:
The main use of tantalum carbide is carbide, capacitors, electronic devices, high-temperature components, chemical equipment and ferrite. Carbides are typically added to tungsten carbide/cobalt (WC / CO) powder wear to enhance the physical properties of the sintering structure.
The tantalum carbide also serves as a grain growth inhibitor to prevent large particles from forming a material to produce an optimum hardness.
It is also used as steel mold coatings in aluminum alloy injection molding. While providing hard, wear-resistant surfaces, it also provides low friction mold surfaces.
Carbides are also used to produce sharp instruments with extreme mechanical resistance and hardness. In addition, tantalum carbide can also be used in the following:
1.Cemented carbide
The tantalum carbide plays an important role in the cemented carbide, which improves alloy properties by improving fibrous tissue and phase transformation kinetics, making alloys with higher strength, phase stability, and processing deformation capabilities.
2. Electronic industry
Natunction not only inherits many advantages of carbide nanomaterials but also has its own unique side. Such as high hardness (normal temperature is 9-10, high melting point (approximately 3880 ° C), Yang's modulus (283-550 GPa), strong conductivity (32.7-117.4 μΩ · CM at 25 ° C in electrical conductivity) ), High-temperature superconducting (10.5k), anti-chemical corrosion candles and heat shock ability, highly catalytic activity of ammonia decomposition and hydrogen separation.
3. High-temperature alloy
In carbide, the melting is preferably a tantalum carbide(TAC) (melting point 3890 ° C) and carbide (HFC) (melting point 3880 ° C), followed by carbide (ZrC) (melting point 3500 ° C). At high temperatures, these materials have excellent mechanical properties, greatly exceeded the best polycrystalline graphite, especially carbonized, is the only material that maintains certain mechanical properties in the temperature range of 2900 ° C-3200 ° C.
Storage Condition of Tantalum carbide TaC powder:
The damp reunion will affect TaC powder dispersion performance and using effects, therefore, Tantalum carbide TaC powder should be sealed in vacuum packing and stored in cool and dry room, the Tantalum carbide TaC powder can not be exposure to air. In addition, the Ti2AlC powder should be avoided under stress.
Packing & Shipping of Tantalum carbide TaC powder:
We have many different kinds of packing which depend on the Tantalum carbide TaC powder quantity.
Tantalum carbide TaC powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Tantalum carbide TaC powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.
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 boride powder, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.
If you are looking for high-quality tantalum carbide powder, please feel free to contact us and send an inquiry. ([email protected])
Tantalum Carbide Properties |
|
| Other Names | tantalum(IV) carbide, TaC powder |
| CAS No. | 12070-06-3 |
| Compound Formula | TaC |
| Molecular Weight | 192.96 |
| Appearance | Brown to Dark Brown Powder |
| Melting Point | 3850 °C |
| Boiling Point | 4780-5470 °C |
| Density | 14.3-14.7 g/cm3 |
| Solubility in H2O | Insoluble |
| Specific Heat | 36.71 J/mol·K |
| Thermal Conductivity | 21 W/m·K |
| Exact Mass | 192.947996 |
Hafnium Diboride Health & Safety Information |
|
| Signal Word | N/A |
| Hazard Statements | N/A |
| Hazard Codes | N/A |
| Risk Codes | N/A |
| Safety Statements | N/A |
| Transport Information | NONH for all modes of transport |
The current international situation is highly uncertain, and its economic impact has not been able to be assessed properly. In addition, rising energy and commodity prices and supply chain disruptions are expected to push the price of the Tantalum Carbide powder higher.
