Boron nitride came out more than 100 years ago. Its application is hexagonal boron nitride as a high-temperature lubricant [abbreviation: h-BN, or a-BN, or g-BN (ie graphite boron nitride)], h-BN is not Its structure and performance are also similar to graphite, and its own whiteness, so it is commonly called: white graphite. Boron Nitride

Boron nitride (BN) ceramics is a compound discovered as early as 1842. A lot of research work has been done on BN materials abroad since the Second World War, and it was not developed until the BN hot pressing method was solved in 1955. The American Diamond Company and Union Carbon Company first started production, and in 1960 they had produced more than 10 tons.

In 1957, R·H·Wentrof took the lead in successfully trial-manufacturing CBN. In 1969, General Electric Company sold the product as Borazon. In 1973, the United States announced the production of CBN tools.

In 1975, Japan imported technology from the United States and also produced CBN tools.

In 1979, Sokolowski successfully used pulsed plasma technology to prepare avalanche c-BN film at low temperature and low pressure.

At the end of the 1990s, people have been able to use a variety of physical vapor deposition (PVD) and chemical vapor deposition (CVD) methods to prepare c-BN films.

From the perspective of China, the development is advancing by leaps and bounds. The research on BN powder began in 1963, was successfully developed in 1966, and was put into production in 1967 and used in my country's industry and technology.