Tantalum also has very good chemical properties and is extremely resistant to corrosion. No matter in cold or hot conditions, it has no reaction to hydrochloric acid, concentrated nitric acid and "aqua regia". The tantalum was soaked in sulfuric acid at 200℃ for one year, and the surface layer was only damaged by 0.006 mm.
Tungsten sheet,
molybdenum sheet,
tungsten rods,
molybdenum rods,
tungsten tubes,
molybdenum tubes,
tungsten crucibles,
molybdenum crucibles experiments have shown that tantalum rods are ineffective against alkaline solutions, chlorine gas, bromine water, dilute sulfuric acid and many other chemicals under normal conditions. It only reacts under the action of hydrofluoric acid and hot concentrated sulfuric acid. Such a situation is relatively rare in metals.
The characteristics of tantalum make it widely used. In the equipment for preparing various inorganic acids, tantalum can be used to replace stainless steel, and the service life can be increased by dozens of times compared with stainless steel. In addition, in the chemical, electronic, electrical and other industries, tantalum can replace the tasks that need to be undertaken by the precious metal platinum in the past, so that the required cost is greatly reduced.
In addition, tantalum is also an important element for refining super-strength steel, corrosion-resistant steel and heat-resistant steel alloys, and can provide special materials necessary for the development of space technologies such as rockets, spacecraft, and jet aircraft. Non-magnetic alloys made of tantalum and tungsten are widely used in the electrical industry, especially tantalum carbide composed of tantalum and carbon, which has great hardness and is comparable to diamond even under high conditions. Tungsten plates, molybdenum plates, tungsten rods, molybdenum rods, tungsten tubes, molybdenum tubes, tungsten crucibles, and molybdenum crucibles are made of turning tools, which can cut many hard alloys at high speed; various drills made of it can replace The hardest alloy or diamond. Therefore, tantalum is also considered as a "vitamin" in smelting.
