Tantalum metal introduction
Tantalum metal introduction Tantalum has a wide range of applications due to its many bizarre properties , therefore, is known as a "versatile metal kingdom." Tantalum is very hard texture, hardness of 6-6.5 (diamond is 10), its melting point up to 2996 ℃, second only to tungsten and rhenium , ranking the third place of all elements. Tantalum is malleable and can be drawn into thin or thin foil. Its coefficient of thermal expansion is small, with each increase of 1 ° C only swells 6.6ppm. In addition, it is very tough and superior to copper. Tantalum also has a very high corrosion resistance. Whether it is hot and cold conditions, hydrochloric acid, concentrated nitric acid and "aqua regia" (gold will encounter king of water will melt) will not respond. Tantalum will be immersed in sulfuric acid at 200 ℃ for one year, the surface damage only 0.006mm. The applicat...