Tantalum has a series of excellent properties such as high melting point, low vapor pressure, good cold workability, high chemical stability, strong resistance to liquid metal corrosion, and large surface oxide film dielectric constant. Therefore, tantalum has important applications in high-tech fields such as electronics, metallurgy, steel, chemical, cemented carbide, atomic energy, superconducting technology, automotive electronics, aerospace, medical and health, and scientific research.

In the world: 50%-70% of tantalum plate manufacturers produce capacitors in the form of capacitor-grade molybdenum powder and tantalum wire. Since the surface of tantalum can form a dense and stable amorphous oxide film with high dielectric strength, it is easy to accurately and conveniently control the anodic oxidation process of the capacitor. At the same time, the sintered tantalum powder can obtain a large surface area in a small volume. Capacitors have high capacitance, low leakage current, low equivalent series resistance, good high and low temperature characteristics, long service life, excellent comprehensive performance, and other capacitors are difficult to match. It is widely used in communications (switches, mobile phones, pagers, Fax machines, etc.), computers, automobiles, household and office appliances, instrumentation, aerospace, national defense and military industries and other industrial and scientific departments. Therefore, tantalum is an extremely versatile functional material.

The application of tantalum as an alloying element in steel is still very few. Tantalum has a very high affinity with hidden atoms such as C and N in steel, and the compounds formed with them are very stable even at high temperatures. Scholars from the Institute of Metal Research of the Chinese Academy of Sciences conducted a preliminary study of the strengthening effect of tantalum on Fe-C-Ta alloys and related mechanisms through mechanical performance testing and observations of OM, SEM, and TEM. The research results show that when the tantalum content is increased from 0.027% to 0.059%, the strength of the alloy is greatly improved, and the impact energy of the high tantalum content alloy is reduced by 87J, but it still has good toughness. According to the analysis, the strengthening effect of tantalum in iron-based alloys is shown as solid solution strengthening and precipitation strengthening. After aging at 600C for 1 hour, the strength and plasticity of high-tantalum alloys reach larger values at the same time, and good tantalum-containing carbides are obtained. Precipitation strengthening effect.