%0 Journal Article %T 透波氮化硅纤维的综合性能评价表征研究 %T Characterization and Properties of New Silicon Nitride Fibers for Wave-Transmitting %A 张娟 %A 周明星 %A 张敬义 %A 周军 %A 张大海 %A ZHANG,Juan %A ZHOU,Mingxing %A ZHANG,Jingyi %A ZHOU,Jun %A ZHANG,Dahai %J 宇航材料工艺 %J Aerospace Materials & Technology %@ 1007-2330 %V 49 %N 4 %D 2019 %P 73-77 %K 氮化硅纤维;评价表征;力学强度;介电性能 %K Silicon nitride fibers;Characterization;Tensile strength;Dielectric property %X 系统研究了氮化硅纤维的基本物理性能、力学性能和介电性能,并且探究了各性能的测试方法。结果表明,氮化硅纤维在1 500 ℃的高温强度保留率达到50%以上,介电常数为6.0左右,说明氮化硅纤维可以作为透波材料在苛刻的高温环境下长时使用。 %X The properties and characterization methods of silicon nitride fibers were investigated, including basic physical properties, diameter, tensile strength and dielectric property. The results indicated that the tensile strength of silicon nitride fibers after treating at 1500℃ was remained above 50% of the original fibers, and the dielectric constant was about 6.0. The results showed that silicon nitride fibers could be used for long time and elevated temperature application. %R 10.12044/j.issn.1007-2330.2019.04.014 %U http://www.yhclgy.com/yhclgy/home %1 JIS Version 3.0.0