有“白石墨”之称的六方晶BN(h-BN),不仅具有与石墨相类似的层状结构,还具有石墨那样的机械切削加工性、润滑性、耐热性、耐热冲击性、耐侵蚀性等方面的优越性能,而且与导电性石墨不同,还具有电阻大、介电损耗小这些作为电绝缘材料的优越性能。因此最近在特殊用途方面,对六方晶BN(h-BN)陶瓷大型成形制品的需求日趋活跃。 具体表现在如下几个方面:钢铁厂连铸用部件;Al(铝)焙体用铸型材料;熔融金 Hexagonal BN (h-BN), which is called “white graphite”, has not only a layered structure similar to graphite but also mechanical machinability such as graphite, lubricity, heat resistance, thermal shock resistance, Corrosion resistance and other aspects of the superior performance, but also with the conductive graphite is different, but also has a large resistance, dielectric loss of these electrical insulation materials as superior performance. As a result, demand for large-size shaped products of hexagonal BN (h-BN) ceramics has recently become increasingly active in special applications. Specific performance in the following areas: steel plant parts for continuous casting; Al (aluminum) cast material used for baking; molten gold