Cubic Boron Nitride (c-BN) is a synthetic material that is second only to diamond in hardness. It is composed of boron and nitrogen atoms arranged in a crystal structure similar to that of diamond. Due to its exceptional hardness, c-BN is widely used in industrial applications, particularly for cutting, grinding, and drilling tools. In addition to its hardness, cubic boron nitride is chemically stable and resistant to high temperatures, making it suitable for use in harsh environments. It is often used in the manufacturing of abrasives and as a coating for tools to enhance their durability and performance.