但是，由于氮化铝和六方氮化硼都是共价键化合物，所以常压烧结很难获得高致

However, since the hexagonal boron nitride and aluminum nitride are covalently bonded compound, it is difficult to obtain a highly densified by pressureless sintering of composite ceramics. <br>If there is no high density, there would be a ceramic composite excellent performance. <br>To obtain AlN-BN composite ceramics compact, researchers used superior AlN-BN composite ceramics of different properties of the sintered sintering aids and preparation manner.

However, since aluminum nitride and boron nitride are covalent bond compounds, it is difficult to obtain high-dense complex ceramics with regular sintering.<br>Complex ceramics would not have excellent performance without a high density. In order to obtain dense AlN-BN complex ceramics, the researchers used different sintering aids and sintering methods to prepare high-performance AlN-BN complex-phase ceramics.

However, since AlN and hBN are covalently bonded compounds, it is difficult to obtain dense multiphase ceramics by sintering at atmospheric pressure.<br>Without high density, the composite ceramics will not have excellent properties.<br>In order to obtain dense AlN-BN composite ceramics, the researchers used different sintering aids and sintering methods to prepare AlN-BN composite ceramics with excellent properties.<br>