What is tantalum carbide?
Tantalum carbide is a metallic cubic crystalline powder that forms a binary chemical compound family of tantalum and carbon. They are extremely hard, fragile refractory ceramic materials with metallic conductivity. They appear as brownish-gray powders and are usually processed by sintering. It belongs to the sodium chloride type cubic crystal system. At present, tantalum carbide is also used as a cemented carbide sintered grain growth inhibitor, which significantly inhibits grain growth, with a density of 14.3g/cm3.
The characteristics of tantalum carbide
Molecular weight: 192.956. Light metallic cubic crystalline powder, which belongs to sodium chloride type cubic crystal system. Insoluble in water, insoluble in inorganic acid, soluble in the mixed acid of hydrofluoric acid and nitric acid, and decomposable. It has strong oxidation resistance and is quickly melted and decomposed by potassium pyrosulfate. High conductivity, the resistance of 30Ω at room temperature, showing superconductivity.
What is the function of tantalum carbide?
As the most commonly used material in life, carbon has high-temperature resistance, good thermal conductivity, and chemical stability, which makes it play a vital role in daily life and the development of science and technology. One of its critical applications is that in silicon carbide crystal growth, the crucible made of graphite plays an essential role in preparing silicon carbide crystal by physical vapor transmission. However, due to the corrosion of raw materials on the crucible wall at high temperatures, the graphite crucible cannot be directly used for crystal growth. The coating of tantalum carbide on a graphite surface can solve this problem well. As a ceramic material, Tantalum carbide can be obtained by directly reacting tantalum-containing compounds with carbon at high temperatures. Its high melting point and high chemical stability enable it to effectively resist the corrosion of various chemical substances at high temperatures. When used as a coating on the surface of a graphite crucible, it can effectively play a protective role, improve the crystal quality, increase the reuse rate of the crucible and reduce the production cost.
However, due to the brittleness of tantalum carbide ceramic and the difference in thermal expansion coefficient between the coating and the carbon matrix, the bonding force between the layer and the carbon matrix is poor. The coating will appear with obvious cracks or even fall off from the matrix during preparation or use, which ultimately affects the quality of the product. Therefore, finding a method for preparing tantalum carbide coating with high adhesion is of great significance.
The price of tantalum carbide
The market price of tantalum carbide is affected by various factors. Currently, its market price is in the process of dynamic change. If you need it, please contact us at any time.
Tantalum carbide powder supplier
TRUNNANO (aka. Luoyang Tongrun Nano Technology Co., Ltd.) is a reputable global chemical material supplier and manufacturer with 12 years of experience providing high-quality chemical materials and manufacturing processes. Currently, our company has successfully developed a series of powder materials. OEM service is available. If you are looking for high-quality and cost-effective tantalum carbide, please contact us or click on the needed products to send us an inquiry.
