Sintered boron nitride body and method for producing a sintered boron nitride body

A sintered boron nitride body produced by a method comprising the steps of:

• providing a volume of powder comprising hexagonal boron nitride powder;
• cold-pressing the volume of powder into a cold-pressed molded body;
• an optionally hot-pressing the cold-pressed molded body into a hot-pressed molded body;
• and
• sintering the hot-pressed molded body or the cold-pressed molded body into the sintered boron nitride body, and wherein when the sintering is of the hot-pressed molded body, the sintered boron nitride body has a density between about 1.2 g/cm3 and 1.6 g/cm3, and when the sintering is of the cold-pressed molded body, the sintered boron nitride body has a density between about 0.9 g/cm3 and about 1.2 g/cm3.

A method for producing a sintered boron nitride body comprising the steps of:

• providing a volume of powder including a volume of hexagonal boron nitride powder;
• cold-pressing the volume of hexagonal boron nitride powder into a cold-pressed molded body;
• and
• sintering the hot-pressed molded body or the cold-pressed molded body into the sintered boron nitride body, and wherein the sintered boron nitride body has a density of less than 1.6 g/cm3.