Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Molten salt modifier of modified SiO2 oxide as well as preparation method and application of molten salt modifier
The invention belongs to the field of advanced welding ceramic matrix composite materials, and particularly relates to a fused salt modifier and a preparation method and application thereof. In order to overcome the defects existing in the technology for modifying harmful SiO2 oxide generated in a crack area after an existing aero-engine SiCf/SiC ceramic-based composite material serves, the invention provides a molten salt modifier which comprises Ca-based alkaline oxide accounting for 0.1-60 wt% of a molten salt system and low-melting-point inorganic salt. The fused salt modifier can efficiently remove and/or modify SiO2 oxide generated in a crack area after the SiCf/SiC ceramic-based composite material serves, and does not damage a base material of the SiCf/SiC ceramic-based composite material. The fused salt modifier is efficient and green fused salt for modifying SiO2 oxide, can be produced on a large scale, is low in cost and simple in process, and can efficiently repair cracks of SiCf/SiC ceramic matrix composite parts.
本发明属于先进焊接陶瓷基复合材料领域，具体涉及一种熔盐改性剂及其制备方法和应用。为了解决改性现有航空发动机SiCf/SiC陶瓷基复合材料服役后裂纹区域产生的有害SiO2氧化物技术中存在的不足，本发明提供一种熔盐改性剂，包括占熔盐体系0.1～60wt％的Ca基碱性氧化物和低熔点的无机盐。该熔盐改性剂能高效地去除和/或改性SiCf/SiC陶瓷基复合材料服役后裂纹区域产生的SiO2氧化物，还不损伤SiCf/SiC陶瓷基复合材料基体材料。本发明熔盐改性剂是一种高效、绿色的改性SiO2氧化物的熔盐，能大规模生产，成本低廉、工艺简单，且能高效实现SiCf/SiC陶瓷基复合材料零部件的裂纹修理。
Molten salt modifier of modified SiO2 oxide as well as preparation method and application of molten salt modifier
The invention belongs to the field of advanced welding ceramic matrix composite materials, and particularly relates to a fused salt modifier and a preparation method and application thereof. In order to overcome the defects existing in the technology for modifying harmful SiO2 oxide generated in a crack area after an existing aero-engine SiCf/SiC ceramic-based composite material serves, the invention provides a molten salt modifier which comprises Ca-based alkaline oxide accounting for 0.1-60 wt% of a molten salt system and low-melting-point inorganic salt. The fused salt modifier can efficiently remove and/or modify SiO2 oxide generated in a crack area after the SiCf/SiC ceramic-based composite material serves, and does not damage a base material of the SiCf/SiC ceramic-based composite material. The fused salt modifier is efficient and green fused salt for modifying SiO2 oxide, can be produced on a large scale, is low in cost and simple in process, and can efficiently repair cracks of SiCf/SiC ceramic matrix composite parts.
本发明属于先进焊接陶瓷基复合材料领域，具体涉及一种熔盐改性剂及其制备方法和应用。为了解决改性现有航空发动机SiCf/SiC陶瓷基复合材料服役后裂纹区域产生的有害SiO2氧化物技术中存在的不足，本发明提供一种熔盐改性剂，包括占熔盐体系0.1～60wt％的Ca基碱性氧化物和低熔点的无机盐。该熔盐改性剂能高效地去除和/或改性SiCf/SiC陶瓷基复合材料服役后裂纹区域产生的SiO2氧化物，还不损伤SiCf/SiC陶瓷基复合材料基体材料。本发明熔盐改性剂是一种高效、绿色的改性SiO2氧化物的熔盐，能大规模生产，成本低廉、工艺简单，且能高效实现SiCf/SiC陶瓷基复合材料零部件的裂纹修理。
Molten salt modifier of modified SiO2 oxide as well as preparation method and application of molten salt modifier
改性SiO2氧化物的熔盐改性剂及其制备方法和应用
XING YUMING (Autor:in) / WANG XINGPU (Autor:in) / LIU JUNLING (Autor:in) / YAO GAICHENG (Autor:in) / SUN YIDONG (Autor:in) / ZHAO XUAN (Autor:in) / LI SHUGUANG (Autor:in) / PENG ZHONGYA (Autor:in)
20.08.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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