Niobium Engineering Applications
Niobium engineering applications are as followings:
1. Chemical engineering
Although the corrosion resistance of niobium is nearly as good as that of tantalum, niobium is, by comparison, not used as much in chemical engineering. However, niobium has the advantage of lower density. Should niobium meet all requirements on corrosion resistance for a given application, it could be used instead of tantalum. Niobium has exceptional resistance to nitric acid, aqua regia, cold sulphuric acid, hydrochloric acid and organic acids.
2. High temperature vacuum engineering
Because niobium has a high melting point and favorable high-temperature properties, it is a useful material for high-temperature vacuum furnaces. Niobium is therefore recommended as a material for high-temperature components such as radiation shields, heating elements, furnace parts, ect. operating at temperatures up to 1600 ℃.
Niobium can also be used as a getter to purify a closed vacuum system (e.g. in X-ray tubes).
3. Lighting industry
Small seamless tubes of niobium or the niobium alloy Nb Zr are used as electrode supports for high-pressure sodium lamps. The high corrosion resistance to evaporated alkali metals and its similar thermal expansion to alumina are advantages of niobium.
Zhengzhou Sanhui Co., Ltd has been dealing in refractory metals for almost 25 years. We are one Alibaba’s 10-year golden supplier. In addition, Sanhui is the pioneer argon-arc welding electrodes. We provide tungsten, molybdenum, titanium and other metal products.
1. Chemical engineering
Although the corrosion resistance of niobium is nearly as good as that of tantalum, niobium is, by comparison, not used as much in chemical engineering. However, niobium has the advantage of lower density. Should niobium meet all requirements on corrosion resistance for a given application, it could be used instead of tantalum. Niobium has exceptional resistance to nitric acid, aqua regia, cold sulphuric acid, hydrochloric acid and organic acids.
2. High temperature vacuum engineering
Because niobium has a high melting point and favorable high-temperature properties, it is a useful material for high-temperature vacuum furnaces. Niobium is therefore recommended as a material for high-temperature components such as radiation shields, heating elements, furnace parts, ect. operating at temperatures up to 1600 ℃.
Niobium can also be used as a getter to purify a closed vacuum system (e.g. in X-ray tubes).
3. Lighting industry
Small seamless tubes of niobium or the niobium alloy Nb Zr are used as electrode supports for high-pressure sodium lamps. The high corrosion resistance to evaporated alkali metals and its similar thermal expansion to alumina are advantages of niobium.
Zhengzhou Sanhui Co., Ltd has been dealing in refractory metals for almost 25 years. We are one Alibaba’s 10-year golden supplier. In addition, Sanhui is the pioneer argon-arc welding electrodes. We provide tungsten, molybdenum, titanium and other metal products.
