The parameters of the porous structure of the reaction-bonded silicon nitride are estimated, as functions of the content of the pore-forming agent, on the basis of the author’s methods and structural model of monodisperse systems in combination with percolation theory. On evaluation of the thermal conductivity of ceramics it was found that the analytical and experimental results for silicon nitride without a pore-former are in satisfactory agreement with one another and for samples with a pore-former there is a several-fold difference. It is hypothesized that a sharp reduction of the thermal conductivity on introduction of a pore-former is an effect of the separation of silicon particles by the larger particles of the pore-former.

基于作者的方法和单分散体系的结构模型，结合渗流理论，估计反应键合氮化硅的多孔结构参数作为成孔剂含量的函数。在评估陶瓷的热导率时发现，不含造孔剂的氮化硅的分析和实验结果彼此非常一致，而对于含有造孔剂的样品，则存在几倍的差异。假设引入造孔剂时热导率的急剧降低是硅颗粒被造孔剂的较大颗粒分离的影响。