Tantalum: Corrosion resistant champion; Melting point: 3017°C; Boiling point: 5505°C. Tantalum has extremely high corrosion resistance. Under both cold and hot conditions, hydrochloric acid, concentrated nitric acid and "aqua regia" do not react. Tantalum can be used to replace stainless steel in the equipment of making all kinds of inorganic acids, and its service life can be increased dozens of times compared with stainless steel. In addition, tantalum can replace the precious metal platinum in chemical, electronic, electrical and other industries, so that the cost can be greatly reduced.
Niobium: Corrosion resistance; Melting point: 3017°C; Boiling point: 5505 °C.Niobium is special because of its high corrosion resistance and relatively light weight. We use niobium to make coin inserts of various colors to keep them always shiny, corrosion-resistant evaporator boats for coating, and stable sized crucibles for diamond growth. Niobium has also been used as a fraudulent material due to its high biological adaptability. Niobium is also an ideal material for superconducting cables and magnets because of its high transition temperature.
Application of high-temperature resistant metal materials
High temperature resistant metal materials commonly used in industry are alloys, because pure metal materials have advantages and disadvantages, but alloys can achieve 1+1>2 through proportional formula adjustment, through the combination with non-metallic materials, alloy refractory materials have high hardness, good brittleness, good chemical corrosion resistance and other advantages.
The most high temperature resistant materials should belong to the aerospace field, all kinds of space shuttle spacecraft outer coating, but general special aerospace high temperature resistant materials belong to the secret!
