24621-21-4 Usage
Description
Niobium nitride (NbN) is a dark gray, chemically stable compound with a face-centered cubic (fcc) structure and a lattice constant of a=0.4388nm. It possesses a hardness rating of 8+ on the Mohs scale and an electrical resistivity of 78μΩ·cm. NbN exhibits a superconducting transition temperature of 15.2K and can be synthesized by heating niobium metal in excess nitrogen (N2) or ammonia (NH3) at temperatures ranging from 700°C to 1100°C. Due to its unique properties, niobium nitride has found various applications across different industries.
Uses
1. Superconducting Applications:
Niobium nitride is used as a superconductor due to its critical transition temperatures as low as 16-17K, making it suitable for applications in superconducting microelectronics.
2. Anti-Reflective Coatings:
NbN is utilized in the production of absorbing anti-reflective coatings, which help reduce glare and improve the efficiency of optical components.
3. Arc-Welding Rods:
Niobium nitride is used in the manufacturing of arc-welding rods, enhancing their performance and durability.
4. Steel Industry:
NbN is employed in the steel industry to improve the strength and toughness of steel alloys.
5. Electrical Stability in Electronics:
Niobium nitride is used in the form of 99.5% pure sputtering targets to increase the electrical stability of diodes, transistors, and integrated circuits.
Check Digit Verification of cas no
The CAS Registry Mumber 24621-21-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,4,6,2 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 24621-21:
(7*2)+(6*4)+(5*6)+(4*2)+(3*1)+(2*2)+(1*1)=84
84 % 10 = 4
So 24621-21-4 is a valid CAS Registry Number.
InChI:InChI=1/N.Nb/rNNb/c1-2
