Performance and application of titanium carbide powder

The chemical formula of titanium carbide is TiC. Titanium carbide is a steel gray crystal with metallic luster, has thermal conductivity and electrical conductivity, and its electrical conductivity decreases with increasing temperature, so it exhibits metallicity.

Titanium carbide powder characteristics

Titanium carbide is a very hard compound with a very high melting point. Its hardness is second only to diamond, and its magnetism is weaker. Titanium carbide is insoluble in water, but soluble in nitric acid and aqua regia.

Titanium carbide is stable to air below 800°C, is corroded by air above 2000°C, and can react with pure O2 at 1150°C. Titanium carbide has the same crystal lattice and the same parameters as TiN and TiO, so it can form a series of continuous solid solutions with each other.

How is titanium carbide TiC powder produced?

There are many synthetic methods for titanium carbide, the most common ones are:

1. Carbothermal reduction method

Use carbon black to reduce TiO2, the reaction temperature is 1700-2100℃, and the chemical reaction formula is TiO2+3C. (S) = TiC (S) + 2CO (g).

2. Direct carbonization

Titanium powder and carbon powder react 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 reactants are severely agglomerated and require further grinding treatment to prepare fine particles. TiC particle powder. In order to obtain a purer product, the fine powder must be chemically purified after ball milling.

3. Chemical Vapor Deposition

This 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 in terms of yield and even quality. In addition, because TiCl4 and its products, the HCl contained therein is highly corrosive, so be careful when synthesizing.

4. The sol-gel method is

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

5. 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, thereby synthesizing nano-TiO2 and carbon into TiC.

6. Impact 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 a precursor with a density of 1.5g/cm3, and the laboratory is placed in a metal-constrained cylinder. Put it into a self-made airtight explosion container for experiment, collect the explosion ash after the explosion shock wave. After preliminary screening, remove large impurities (such as iron filings) to obtain black powder. The black powder turns into 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.

7. High frequency induction carbothermic reduction method

The pigment-grade titanium dioxide powder and charcoal powder are weighed and mixed at a molar ratio of 1:3 and 1:4, added to a ball mill tank, and grind on a planetary ball mill at a speed of 300-400r/min for 6-10 hours, and then grind the material. The tablet press is pressed into a block of 2cm×2cm~2cm×4cm, and finally the material is put into a graphite crucible, and put into a high-frequency induction heating device. With argon as a protective atmosphere, gradually reduce the current of the high-frequency induction device and adjust it to 500A , Make the material undergo a carbothermal reduction reaction, 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 pulverized to obtain ultrafine titanium carbide powder.

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, and weak magnetism. The molecular weight is 59.89, the melting point is 3140°C, the boiling point is 4820°C, the relative density is 4.93, and the hardness is 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 WC-Co cemented carbide forms 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. Tanji 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.