Niobium steel clad plate is a particular material. It is composed of two layers of metals of different materials. The base layer is niobium and the cladding is steel. This kind of composite board has a series of exceptional buildings, such as high corrosion resistance, high temperature resistance, good thermal conductivity, etc. It can be widely used in aerospace, the petrochemical industry, ship manufacturing, power electronics and other fields.
The preparation method of Niobium steel clad plates mainly includes two steps: the first step is rolling of the base layer and cladding layer, and the second step is heat treatment at 650-850°C. This preparation method makes the base layer and cladding of the Niobium steel clad plate have high bonding strength and are not easy to delaminate.
At room temperature, niobium is stable in the atmosphere and will turn the surface blue after long-term storage. Niobium is not affected by inorganic acids or alkalis and is not soluble in aqua regia. It can resist various erosions and form a dielectric oxide layer. It will not be completely oxidized when red hot in oxygen. Therefore, niobium steel composite plates can be used as coating materials in chemical tanks in chemical plants, showing excellent corrosion resistance in systems involving loading and discharging or contact with flammable and eruptive materials such as natural gas, petroleum, chemicals, and pipeline transportation.
Niobium steel clad plates are mainly used in the following fields due to their excellent performance:
Aerospace field: Because niobium steel composite plates have high temperature resistance and corrosion resistance, as well as high strength, they can be used to manufacture parts for aircraft such as airplanes and rockets.
Petrochemical industry: In the petrochemical industry, Niobium steel clad plates can be used to manufacture pipelines, reactors, storage tanks and other equipment because they can resist the erosion of various chemical substances.
Ship manufacturing field: Because Niobium steel clad plates have good corrosion and high temperature resistance, they can be used to manufacture ship engine parts and hull protective layers.
Power electronics field: Niobium steel composite plates can be used to manufacture high-temperature thermal conductive devices, such as generator blades.
The role of niobium in steel
Niobium is an important metallic element that plays many important roles in steel.
Niobium increases the strength and hardness of steel. Niobium is a strengthening element that can form a solid solution with carbon, oxygen, nitrogen and other elements in steel, thereby refining the steel grains and improving the steel’s strength and hardness. In addition, niobium can also form a stable niobium carbide (NbC) phase. This carbide has high hardness and can effectively enhance steel’s hardness and wear resistance.
Niobium improves the corrosion resistance of steel. Niobium can form a stable iron nitride (Fe3Nb3N) phase with the iron in steel. This nitride can prevent the entry of oxygen and water molecules, thereby effectively improving the corrosion resistance of steel. In addition, niobium can also form a stable niobium sulfide (NbS) phase with sulfur in steel. This sulfide can prevent the corrosion of harmful substances such as hydrogen sulfide and further improve the corrosion resistance of steel.
Niobium can also improve the high-temperature strength and heat resistance of steel. Niobium has good high-temperature stability, can maintain the strength and hardness of steel at high temperatures, and can also improve steel’s creep and heat resistance. This makes niobium an important alloying element widely used in the preparation of steel under high temperature conditions.
Niobium also improves the weldability and workability of steel. Niobium can form a stable niobium nitride (NbN) phase with nitrogen in steel. This nitride can increase steel’s grain boundary solid solubility, thereby improving steel’s weldability. At the same time, niobium can also refine steel grains and improve steel’s workability and plasticity.
Niobium can also improve the cold workability of steel. Niobium can form a stable niobium carbide (NbC) phase with the carbon in the steel. This carbide can increase the strength and hardness of the steel and also improve its cold working properties. This makes the steel easier to deform and plastically deform during cold working, improving the processing performance of the steel.
Niobium has many important functions in steel. It can improve steel’s strength, hardness, corrosion resistance, high temperature strength and heat resistance while also improving steel’s weldability, processability and cold working properties. These effects make niobium an important alloying element widely used in steel preparation. Niobium alloy steel is not only widely used in aerospace, energy, automobile and other fields but also plays an important role in highly corrosive environments such as the nuclear industry and chemical industry.
TRUNNANO is a supplier of raw materials of niobium steel clad plate with over 12 years experience in nano-building energy conservation and nanotechnology development. It accepts payment via Credit Card, T/T, West Union and Paypal. Trunnano will ship the goods to customers overseas through FedEx, DHL, by air, or by sea. If you are looking for high-quality raw materials of niobium steel clad plate please feel free to contact us and send an inquiry.