| abstract |
In order to provide a sintered, hexagonal boron nitride body ( 2 a, 2 b ), same is produced by at least one pressing process and subsequent sintering process from a powder (P) made of a hexagonal boron nitride, its density being deliberately set to a value of <1.6 g/cm 3 . Studies have shown that, due to the selection of this lower density, the boron nitride body ( 2 a, 2 b ) exhibits very high isotropy, when compared with conventional hexagonal boron nitride bodies. This relates in particular to thermal conductivity and the coefficient of thermal expansion, which are also largely temperature-independent. |