Method for preparing titanium carbide powder

Titanium carbide is a light gray cubic crystal system, which is insoluble in water and has high chemical stability. Titanium carbide hardly reacts with hydrochloric acid and sulfuric acid, but it is soluble in aqua regia, nitric acid and hydrofluoric acid, and also soluble in alkaline oxide solutions.

Titanium carbide is an iron gray crystal with metallic luster, belonging to a simple cubic structure of NaCl type. The carbon atoms and titanium atoms between TiC are equivalent to atoms bonded by strong covalent bonds at the lattice position. It has several properties similar to metals, such as high melting point, high boiling point and hardness. The hardness is second only to diamond.

Titanium carbide powder has good thermal and electrical conductivity, and exhibits superconductivity even at extremely low temperatures. Therefore, TiC is widely used in the manufacture of high-temperature vacuum equipment such as cermets, heat-resistant alloys, hard alloys, anti-wear materials, and high-temperature radiation materials. It has a wide range of applications in other fields.

 Preparation method of titanium carbide powder

Titanium dioxide and carbon black as raw materials

The high-purity titanium dioxide and carbon black are fully mixed in proportion, and a horizontal carbon tube furnace or a vertical carbon tube furnace is used to form a dry powder mixture in a hydrogen atmosphere. At 1900-2300°C, reduce to obtain block TiC, and then pulverize to obtain titanium carbide powder product. Or use sponge titanium and carbon black as raw materials, mix titanium sponge (or titanium waste recovered from titanium alloy and carbide solid solution) with carbon black in proportion, and heat it to 1500-1700°C in a high-purity hydrogen stream to finally get carbonized titanium.

Direct carbonization of titanium

Titanium powder (reduced by sodium or decomposed by titanium hydride, smaller than 325 mesh) is mixed with carbon black, molded at a pressure of about 0.98Pa, and then placed in a graphite container, heated to 15001700℃ in a gas stream, and high-purity hydrogen penetrates into the carbon . The reaction temperature and holding time depend on the type of raw material, particle size and reaction performance.

Gas phase reaction

The vapor of titanium tetrachloride is mixed with hydrogen-containing hydrocarbons (methane, benzene, etc.) and then fed into titanium carbide deposited by induction heating or other methods. This reaction precipitates titanium carbide on the substrate. The reaction conditions such as the concentration ratio of the reaction gas, the reaction temperature, and the gas flow rate are different, and the form of the precipitated titanium carbide is also different.

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.

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.