Testing of ceramic raw and basic materials - Chemical analysis of boron carbide, boron nitride, other metal borides and elemental boron - Part 3: Determination of the non-metallic major and minor constituents total carbon, total oxygen and total nitrogen as well as of free carbon in B<(Index)4>C and of loss on drying of amorphus boron
陶瓷原材料和基本材料的试验.碳化硼 氮化硼 其他金属硼化物和元素硼的化学分析.第3部分:非金属主要和次要成分总碳 总氧和总氮的测定以及B<（指数）4>C和