以廉价的二氧化硅、炭黑和硅粉为起始原料,利用碳热还原-反应烧结法制备了高气孔率、孔结构均匀的多孔氮化硅陶瓷,考察了原料中硅粉含量对多孔氮化硅陶瓷微观组织和力学性能的影响.XRD分析表明烧结后的试样成分除了少量的α-Si3N4相和晶间相Y2Si3O3N4外,其余都是β-Si3N4相；SEM分析显示微观组织由棒状β-Si3N4晶粒和均匀的孔组成.通过改变硅粉的含量,制备了不同气孔率,力学性能优异的多孔氮化硅陶瓷.
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