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Chopped fiber toughened silicon nitride-based ceramic wave-transmitting material and preparation method thereof
The invention discloses a chopped fiber toughened silicon nitride-based ceramic wave-transmitting material and a preparation method thereof.The preparation method of the chopped fiber toughened silicon nitride-based ceramic wave-transmitting material comprises the following steps that chopped silicon nitride fibers are subjected to surface treatment, and modified chopped silicon nitride fibers are obtained; preparing silicon nitride powder slurry, wherein the silicon nitride powder slurry comprises silicon nitride powder and sintering aid powder; drying and granulating the silicon nitride powder slurry to obtain silicon nitride particles; mixing the modified chopped silicon nitride fibers and silicon nitride particles, and then performing dry pressing molding or cold isostatic pressing molding to obtain a chopped fiber toughened silicon nitride-based ceramic wave-transmitting material green body; and sintering the chopped fiber toughened silicon nitride-based ceramic wave-transmitting material blank in a nitrogen atmosphere to obtain the chopped fiber toughened silicon nitride-based ceramic wave-transmitting material, the toughness of the chopped fiber toughened silicon nitride-based ceramic wave-transparent material is improved, meanwhile, the chopped fiber toughened silicon nitride-based ceramic wave-transparent material has good wave-transparent performance, and the strength of the material is not reduced.
本发明公开了一种短切纤维增韧氮化硅基陶瓷透波材料及其制备方法，短切纤维增韧氮化硅基陶瓷透波材料制备方法包括以下步骤：将短切氮化硅纤维进行表面处理，得到改性短切氮化硅纤维；制备氮化硅粉体料浆，所述氮化硅粉体料浆包括氮化硅粉体、烧结助剂粉体；将所述氮化硅粉体料浆进行干燥造粒，得到氮化硅颗粒；将所述改性短切氮化硅纤维、氮化硅颗粒混合，然后通过干压成型或冷等静压成型，得到短切纤维增韧氮化硅基陶瓷透波材料坯体；将所述短切纤维增韧氮化硅基陶瓷透波材料坯体在氮气氛围下烧结，得到所述短切纤维增韧氮化硅基陶瓷透波材料；实现提高短切纤维增韧氮化硅基陶瓷透波材料的韧性，同时具有较好的透波性能且不降低材料强度。
Chopped fiber toughened silicon nitride-based ceramic wave-transmitting material and preparation method thereof
The invention discloses a chopped fiber toughened silicon nitride-based ceramic wave-transmitting material and a preparation method thereof.The preparation method of the chopped fiber toughened silicon nitride-based ceramic wave-transmitting material comprises the following steps that chopped silicon nitride fibers are subjected to surface treatment, and modified chopped silicon nitride fibers are obtained; preparing silicon nitride powder slurry, wherein the silicon nitride powder slurry comprises silicon nitride powder and sintering aid powder; drying and granulating the silicon nitride powder slurry to obtain silicon nitride particles; mixing the modified chopped silicon nitride fibers and silicon nitride particles, and then performing dry pressing molding or cold isostatic pressing molding to obtain a chopped fiber toughened silicon nitride-based ceramic wave-transmitting material green body; and sintering the chopped fiber toughened silicon nitride-based ceramic wave-transmitting material blank in a nitrogen atmosphere to obtain the chopped fiber toughened silicon nitride-based ceramic wave-transmitting material, the toughness of the chopped fiber toughened silicon nitride-based ceramic wave-transparent material is improved, meanwhile, the chopped fiber toughened silicon nitride-based ceramic wave-transparent material has good wave-transparent performance, and the strength of the material is not reduced.
本发明公开了一种短切纤维增韧氮化硅基陶瓷透波材料及其制备方法，短切纤维增韧氮化硅基陶瓷透波材料制备方法包括以下步骤：将短切氮化硅纤维进行表面处理，得到改性短切氮化硅纤维；制备氮化硅粉体料浆，所述氮化硅粉体料浆包括氮化硅粉体、烧结助剂粉体；将所述氮化硅粉体料浆进行干燥造粒，得到氮化硅颗粒；将所述改性短切氮化硅纤维、氮化硅颗粒混合，然后通过干压成型或冷等静压成型，得到短切纤维增韧氮化硅基陶瓷透波材料坯体；将所述短切纤维增韧氮化硅基陶瓷透波材料坯体在氮气氛围下烧结，得到所述短切纤维增韧氮化硅基陶瓷透波材料；实现提高短切纤维增韧氮化硅基陶瓷透波材料的韧性，同时具有较好的透波性能且不降低材料强度。
Chopped fiber toughened silicon nitride-based ceramic wave-transmitting material and preparation method thereof
一种短切纤维增韧氮化硅基陶瓷透波材料及其制备方法
ZHU BAOXIN (Autor:in) / WEI QIHONG (Autor:in) / SHAO CHANGTAO (Autor:in) / WANG HONGSHENG (Autor:in) / ZHANG WEIRU (Autor:in) / LUAN QIANG (Autor:in) / GAI YING (Autor:in) / CAO JUNCHANG (Autor:in) / BI WENQI (Autor:in) / BI RUXIA (Autor:in)
27.08.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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