Titanium Carbide: Introduction
Its chemical formula is
TiO2_Carbid
TiC has a molecular weight of 59.89. This is a gray metallic-like solid that features a square cubic lattice and a face-centered hexagonal lattice. It has a melting temperature of 3140+-90degC. It also has a boiling temperature of 4820degC. The relative densities are 4.93 and 9.
Titanium carbide does not dissolve in water. However, it can be broken down by nitric acid or aqua regia. It reacts with pure oxygen at 1150.
A mixture of titanium powder, carbon, and hydrogen obtained by reducing TiO2 through hydrogen is acted by high temperature. TiO2 powder and carbon are combined and press into agglomerates. Then, they’re heated to 2300-2700 degC in an electrical furnace, carbonized with H2 or CO atmosphere, and finally, the product is carbonized in H2 or CO.
Titanium carbide is a good choice for making hard alloys.
You have many options for titanium carbide preparation
Carbothermic method of reduction
To reduce TiO2, use carbon black. The reaction temperature ranges from 1700-2100. Chemical reaction formula:
Direct carbonization
TiC can be created when Ti powder and carbon are combined. It is a chemical reaction that produces TiC. It is very difficult to produce sub-micron level Ti powder. This limit is why this technique is not widely used. It takes between five and twenty hours for the above reaction to occur. The reaction is also difficult to manage. Further grinding of the reactants is needed to make fine particles. Granular TiC powder. To obtain a more pure product it is important to chemically remove the fine powder from ball milling.
Chemical vapor deposition
Synthesis involves the use of the reaction between TiCl4, Ti2 and C. This reactant reacts in hot tungsten with carbon monofilament.
TiC
Crystals can grow on monofilament. There are strict limitations on the output of TiC powder made by this process, and often even quality. It is also highly corrosive due to the TiCl4 used in its production. Therefore, be aware of how it can be synthesized.
Microwave technique
You will need to take Nano TiO2 (carbon black) as raw materials. Next, apply the principle of carbothermal reduction and heat the material with microwave energy. The high-frequency electrical field converts microwave energy to heat energy by using the dielectric loss in the material. This is how nano-TiO2 (carbon) and TiC are made.
Blast impact method
Mix the titanium dioxide powder with the carbon powder in a specific proportion. To make the precursor, a Ph10mmx5mm cylinder is used. It has a density of 1.5g/cm3. The laboratory is then placed inside a metal constrained outer tube. It is best to use a homemade explosion container. Then, after the explosion shock wave has subsided, you can collect the detonationash. The large impurities like iron filings and other small particles are removed during the preliminary sieving. After 24 hours in water, the brownish-colored black powder is infused with aqua regia and then calcined at 400°C for 400 minute to create a silvery-gray powder.
High-temperature self-propagating synthesis
(SHS) This method derives its name from an exothermic process. Fine-grained Ti powder exhibits high reactivity when it is heated to the correct temperature. Once the flame generated from ignition has passed through reactants C and Ti, the reaction heat will produce enough TiC. SHS is a rapid method that produces TiC in a fraction of a second. High-purity Ti powder is required for the synthesis process. The output of this method can be limited.
Method for react ball milling
Reactive ball-milling technology uses chemical reactions between alloy or metal powders and other elements to make the necessary materials. High-energy ball mills are the most important equipment to prepare nanomaterials using reactive ball milling. They are primarily used for producing nanocrystalline materials. Two types of reaction ball milling can be classified: mechanically inducing self-propagating high temperature synthesis (SHS); and reaction ball grinding without apparent exotherm. The process is slower.
Titan carbide uses
1. They are added to cutting tools materials as well as metal bismuth, zinc and cadmium meltingcrucibles. These crucibles can be used for the preparation of semiconductor wear-resistant film and HDD large capacity memory devices.
2. Cemented carbide uses it as a deoxidizer.
3. This cermet is an example of high-hardness and corrosion resistance. It also has good thermal stability.
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