Several preparation methods of titanium carbide

Carbothermal reduction method

Using carbon black to reduce TiO2, the reaction temperature range is 1700-2100 ℃, and the chemical reaction formula is:

TiO2(s)+3C(s)=TiC(S)+2CO(g).

Direct carbonization

Ti powder reacts with carbon powder to form TiC. The chemical reaction formula is: Ti(s)+C(s)=TiC. Due to the difficulty of preparing submicron metal titanium powder, the application of this method is limited. The above reaction takes 5-20 hours to complete, and the reaction process is difficult to control. The agglomeration of the reactants is severe, and further grinding treatment is required to prepare fine particles. Granular TiC powder. In order to obtain a more pure product, the fine powder after ball milling needs to be chemically purified.

Chemical vapor deposition

The synthesis method utilizes the reaction between TiCl4, H2 and C. The reactant and hot tungsten or carbon monofilament, TiC reacted crystals directly grow on the monofilament. The TiC powder synthesized by this method has strict limits on its output, and sometimes even has strict limits on its quality. In addition, due to TiCl4 and its products, the HCl contained therein is highly corrosive, so be careful when synthesizing.

Microwave method

Take nano titanium dioxide and carbon black as raw materials, use the principle of carbothermal reduction reaction, and use microwave energy to heat the material. In fact, it uses the dielectric loss of the material in the high-frequency electric field to convert microwave energy into heat energy to synthesize TiC with nano-TiO2 and carbon.

Impact method

The titanium dioxide powder and the carbon powder are mixed in a certain ratio and pressed into a cylinder of Φ10mm×5mm to prepare a precursor with a density of 1.5g/cm3. The laboratory puts it into a metal constrained outer cylinder. Put it into a self-made airtight explosion container for experiment, collect the detonation ash after the explosion shock wave. After preliminary screening, large impurities such as iron filings are removed, and black powder is obtained. The black powder turns brown after being soaked in aqua regia for 24 hours, and finally it is calcined in a muffle furnace at 400°C for 400 minutes to obtain a silver-gray powder.

High temperature self-propagating synthesis

(SHS) The SHS method is derived from an exothermic reaction. When heated to an appropriate temperature, the fine-grained Ti powder has high reactivity. Therefore, once the combustion wave generated after ignition passes through the reactants Ti and C, Ti and C will have enough reaction heat to generate TiC. The SHS method is very fast, usually less than one second. This synthesis method requires high-purity, fine titanium powder as a raw material, and the output is limited.

Reaction ball milling technology

Reactive ball milling technology is a technology that uses metal or alloy powder to chemically react with other elements or compounds in the ball milling process to prepare the required materials. The main equipment for preparing nanomaterials by reactive ball milling technology is a high-energy ball mill, which is mainly used to produce nanocrystalline materials. The reaction ball milling mechanism can be divided into two categories: one is mechanically induced self-propagating high temperature synthesis (SHS) reaction, and the other is reactive ball milling, which has no obvious exotherm and the reaction process is slow.

Overview of titanium carbide TiC powder

Titanium carbide TiC powder is a crystalline solid with gray metallic luster, hard texture, hardness second only to diamond, weak magnetism, molecular weight 59.89, melting point 3140°C, boiling point 4820°C, relative density 4.93, hardness 9-10. Insoluble in water, soluble in nitric acid and aqua regia. It is stable to air below 800℃, and corroded by air above 2000℃, at 1150℃. Used in the manufacture of cemented carbide, also used as electrodes and abrasives for arc lamps.

Application of titanium carbide TiC powder

1. Titanium carbide powder is used for high temperature thermal spraying materials, welding materials, hard film materials, military aviation materials, hard alloys and cermets.

2. Used as an additive in thermistor production to improve wear resistance.

3. Titanium carbide powder has a NaCl type cubic crystal structure. Adding 6% to 30% TiC to the WC-Co cemented carbide will form a TiC-WC solid solution with WC, which can significantly improve the red heat resistance, wear resistance and oxidation resistance. , Anti-corrosion and other properties, more suitable for processing steel than WC-Co cemented carbide. Alloys such as Ni-Mo can also be used as a bonding agent to form a tungsten-free cemented carbide, which can increase the turning speed and the accuracy and finish of the workpiece.

4. Used as tool materials and additives for metal bismuth, zinc, and cadmium smelting crucibles, preparing semiconductor wear-resistant films, HDD large-capacity storage equipment, is an important part of cemented carbide, used as a deoxidizer in the steelmaking industry, and also Used as a cermet, it has the characteristics of high hardness, corrosion resistance and good thermal stability.

Titanium carbide TiC powder price

The price of titanium carbide TiC powder will vary randomly with factors such as production cost, transportation cost, international situation, and market supply and demand of titanium carbide TiC powder. Tanki New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for titanium carbide TiC powder, please feel free to send an inquiry to get the latest price of titanium carbide TiC powder.

Titanium carbide TiC powder suppliers

As a global titanium carbide TiC powder supplier, Tanki New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (including boron carbide, aluminum carbide, boron carbide, etc.), high-purity targets, functional ceramics and structural devices, and provides OEM services.