More than 100 years ago, boron nitride was developed. Hexagonal boron nitride was first used as a high-temperature lubricant. Since it has a structure that is quite similar to graphite as well as qualities and its own whiteness, it is frequently referred to as white graphite.
Ceramics made of boron nitride (BN), a substance, were first discovered in 1842. Since the Second World War, BN materials have been the subject of extensive research; however, they weren't developed in the United States until 1955, when the BN hot pressing method was cracked. The first companies to start production were the American Diamond Company and Union Carbon Company, who produced more than 10 tonnes by 1960.
The first person to successfully trial-produce CBN was R.H. Wenthof in 1957. General Electric Company began marketing the item as Borazon in 1969. The US announced the production of CBN tools in 1973. [2]
In 1975, Japan produced CBN tools and imported technology from the US.
The first collapsed c-BN film was successfully prepared using pulsed plasma technology in 1979 at low temperature and low pressure.
