Hafnium nitride is a gray powder with a cubic crystal structure. Melting point 3310℃, microhardness 16GPa. It is fairly stable but easily corroded by aqua regia, concentrated sulfuric acid, and hydrofluoric acid. The reaction is generated directly by the hafnium and nitrogen at 900 ℃, it is the important part of refractory compounds hafnium alloy.
Nitride ceramics have many technical applications and have become high-tech materials in the Engineered Ceramics industry. Aluminum nitride (AlN) is well known for its excellent thermal conductivity and good chemical resistance, and boron nitride (BN) is famous for its softness and lubricant properties. Silicon nitride (Si3N4) is a super choice for sintered bodies requiring good thermal shock resistance and high fracture toughness. Additionally, a full range of ceramic nitride materials for various industrial applications is obtainable.