Tantalum Carbide

English name: Tantalum carbide powder

Molecular formula: TaC

Molecular weight: 193

CAS#：12070-06-3

Melting point: 3880℃

Appearance: Dark brown powder

Thermal conductivity: 22 W/(m-K)

Coefficient of thermal expansion: 6.6×10-6 K-1

Mohs hardness: 9-10

Resistivity: 32.7-117.4 μΩ-cm

Storage method: water-free, light-proof, sealed, moisture-proof

Research on metal matrix composites has primarily focused on monolithic homogeneous composites, but because wear occurs only on the surface of the part, monolithic composites are not conducive to recycling and reuse of the material and pollute the environment. Metal matrix composites have attracted a lot of attention from scientists in the field of materials in various countries because of their unique advantages, such as high specific strength. On the other hand, numerous studies have demonstrated that materials intended to resist wear must simultaneously possess high levels of toughness and hardness. In contrast, the overall composite only enhances toughness, not toughness and hardness, while metal-ceramic composites maintain the excellent characteristics of ceramics, such as high levels of toughness and wear resistance, as well as the high levels of ductility and toughness of the metal matrix.

Carbide particles are utilized extensively as second-phase particle-reinforced metal matrix composites in the sectors of aerospace, metallurgy, building materials, electric power, hydropower, mining, and other industries. These composites have produced positive practical outcomes. Tantalum, an element in the same family as metallic vanadium and niobium, is less investigated. The most common carbide particles recorded are tungsten carbide (WC), titanium carbide (TiC), niobium carbide (NbC), and vanadium carbide (VCp).

The advantages of Ta carbide (TaC) ceramic particles include their high melting point (3880 °C), high hardness (2100 HV0.05), good chemical stability, and good thermal conductivity; however, reports on these materials have only been made for nickel-and aluminum-based substrates due to cost and other factors. The solid phase structure of nickel, chromium, and aluminum-based reinforced ta carbide changed as the solidification rate increased, and the volume fraction of TAC also changed with the change in solidification rate, according to Yu et alstudy .'s of the relationship between in situ reactive directional solidification and tantalum carbide's microstructure at high-temperature gradients. The outcomes demonstrate that the TaC particle-reinforced nickel-based composite coating is well produced, with a smooth surface and a good metallurgical link between the coating and the substrate, under the proper process conditions. On the in-situ creation of TaC on steel, not much study has been documented. Therefore, an iron-based composite with surface ceramic particle enhancement was used in this experiment. TaC particles were selected as the second step of particle reinforcement at the same time. In situ reinforced iron-based surface composites with TaC particles had their microscopic morphology and reaction mechanism examined.

Applications of tantalum carbide

(1) It enhances the characteristics of the alloy through enhanced fiber organization and phase transition kinetics, leading to increased strength, phase stability, and processing deformability. Tantalum carbide is a key component of cemented carbides.

(2) It can be used in the electronics industry because of its many advantages, including chemical stability, high hardness, resistance to oxidation and corrosion, and low coefficient of resistance.

(3) It is a material that can maintain some mechanical properties in the temperature range of 2900°C to 3200°C. However, due to its high coefficient of thermal expansion and low thermal conductivity, it is extremely sensitive to thermal shock, which has become the biggest barrier to its use in aerospace materials. Tantalum carbide will, however, have stronger thermal conductivity and less thermal expansion when incorporated into carbon/carbon composites, which will make use of the refractory metal's resistance to oxidation and ablation for the creation of high-temperature alloys.

Product Advantages

Yusheng Metal Factory produces a wide range of ultra-high temperature ceramic powders in-house, of which tantalum carbide is one, and also produces hafnium carbide. Currently the factory can produce products with different particle sizes such as nano level, sub-micron level and micron level. Other particle sizes can be customised. The packaging can be customized according to the customer's feeding quantity.

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