摘要
分析了生坯制备工艺参数对反应烧结SiC显微组织和性能的影响。结果表明:石油焦含量、石油焦和SiC粒径及成型压力影响生坯气孔率与碳含量的匹配,从而决定了反应烧结SiC材料的组织和性能。当石油焦加入量为ωC=10%,SiC和石油焦粒径为42μm。生坯成型压力为140MPa时,可获得最佳的组织及性能配合,材料的断裂强度和密度分别为310MPa和3.11g·cm-3。
The effect of the processing technological parameters on the microstructure and property of reaction-bonded SiC is studied.The results show that these parameters,i.e.carbon content,carbon and silicon carbide partical size and the shaped press value are critical in determining the final microstructure and property,because they have influences on the matching of green porosity and carbon content.The optimal structure and property of specimens can be obtained by manufacturing from 90% SiC of 42μm with 10% carbon of 42μm,and being pressed at 140 MPa.
出处
《河南科技大学学报（自然科学版）》
CAS
2004年第5期1-4,共4页
Journal of Henan University of Science And Technology:Natural Science
基金
国家自然科学基金资助项目(59772013)
