Application range and synthesis method of titanium carbide TiC powder

Titanium carbide synthesis method

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 method

Ti powder and carbon powder are used to generate TiC. The chemical reaction formula is: Ti(s)+C(s)=TiC. Because it is difficult to prepare sub-micron metal Ti 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 reactants agglomerate seriously, and further grinding processing is required to prepare fine particles. Granular TiC powder. In order to obtain a purer product, it is necessary to chemically purify the fine powder after ball milling.

Chemical vapor deposition method

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

Sol-gel method

A method for preparing small particle size products by thoroughly mixing and dispersing materials by means of a solution. It has the advantages of good chemical uniformity, small powder particle size and narrow distribution, and low heat treatment temperature, but the synthesis process is complex and the drying shrinkage is large.

Microwave method

Take nano TiO2 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, so that nano-TiO2 and carbon are synthesized into TiC.

Explosive impact method

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

High-frequency induction carbothermic reduction method

Weigh and mix the pigment-grade titanium dioxide powder and charcoal powder at a molar ratio of 1:3 and 1:4, add them to a ball mill tank, and mill them on a planetary ball mill for 6-10 hours at a speed of 300-400r/min, and then mill the material. Press the tablet press to form a block of 2cm×2cm～2cm×4cm, and finally put the material into the graphite crucible and put it into the high-frequency induction heating device, argon gas as a protective atmosphere, and gradually adjust the current of the high-frequency induction device to 500A causes the material to undergo carbothermal reduction reaction, and keep it for 20 minutes. After the heat preservation is over, the reduced product is naturally cooled to room temperature under an argon atmosphere, and the reduced product is taken out, and after grinding and crushing, ultrafine titanium carbide powder is obtained.

Metal thermal reduction method

A solid-liquid reaction method is an exothermic reaction, so the reaction temperature is low, the energy consumption is small, but the raw materials are relatively expensive, and the CaO and MgO in the product are pickled and cannot be recycled. 

High-temperature self-propagating synthesis method

(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 has a very fast reaction, usually less than one second. The synthesis method requires high-purity, fine Ti powder as a raw material, and the output is limited.

Reaction ball milling technology method

Reactive ball milling technology is a technology that uses the chemical reaction between metal or alloy powder and other elements or compounds in the ball milling process to prepare the required materials. The main equipment for preparing nanomaterials with reactive ball milling technology is 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 reaction ball milling without 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°C, is corroded by air above 2000°C, and can react with pure oxygen at 1150°C. Used in the manufacture of cemented carbide, also used as an abrasive for electrodes and 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% of 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. , Corrosion resistance 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, cadmium smelting crucibles, preparing semiconductor wear-resistant films, HDD large-capacity storage equipment, and important components of cemented carbide. It is also used as a deoxidizer in the steelmaking industry. 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.

Suppliers of titanium carbide TiC powder

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.