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Molten salt infiltration material, ceramic interface modified material and preparation method of ultrahigh-temperature ceramic modified composite material
The invention provides a molten salt infiltration material which is composed of ultrahigh-temperature metal and reactive molten salt. The ultra-high temperature metal is Hf; the reactive molten salt is one or more of K2ZrF6, K2TiF6 and K2TaF7. Aiming at the problems that when a C/C composite material is infiltrated by a traditional reaction, multi-element ultra-high-temperature ceramic is difficult to introduce into a C/C matrix, the infiltration depth of the multi-element ultra-high-temperature ceramic into the matrix is limited and the segregation of the ultra-high-temperature ceramic is extremely great, the preparation of the multi-element ultra-high-temperature ceramic modified C/C composite material can be realized under the condition far lower than the traditional reaction infiltration temperature; the purpose of free design of the ultra-high temperature ceramic interface layer in the C/C matrix can be achieved; and infiltration can be carried out under the temperature conditionfar lower than the melting points of Zr, Hf and Ta elementary substances. The invention further provides a ceramic interface modified material, an ultrahigh-temperature ceramic modified composite material and a preparation method of the ultrahigh-temperature ceramic modified composite material.
本发明提供了一种熔盐熔渗材料，由超高温金属和反应性熔盐组成；所述超高温金属为Hf；所述反应性熔盐为K2ZrF6、K2TiF6和K2TaF7中的一种或几种。本发明针对传统反应熔渗C/C复合材料时，多元超高温陶瓷引入C/C基体难、渗入基体深度有限和超高温陶瓷偏聚性极大的问题，在远低于传统反应熔渗温度条件下即可实现多元超高温陶瓷改性C/C复合材料的制备；可实现C/C基体内超高温陶瓷界面层自由设计的目的；可在远低于Zr、Hf和Ta单质熔点的温度条件下熔渗。本发明还提供了一种陶瓷界面改性材料和超高温陶瓷改性复合材料及其制备方法。
Molten salt infiltration material, ceramic interface modified material and preparation method of ultrahigh-temperature ceramic modified composite material
The invention provides a molten salt infiltration material which is composed of ultrahigh-temperature metal and reactive molten salt. The ultra-high temperature metal is Hf; the reactive molten salt is one or more of K2ZrF6, K2TiF6 and K2TaF7. Aiming at the problems that when a C/C composite material is infiltrated by a traditional reaction, multi-element ultra-high-temperature ceramic is difficult to introduce into a C/C matrix, the infiltration depth of the multi-element ultra-high-temperature ceramic into the matrix is limited and the segregation of the ultra-high-temperature ceramic is extremely great, the preparation of the multi-element ultra-high-temperature ceramic modified C/C composite material can be realized under the condition far lower than the traditional reaction infiltration temperature; the purpose of free design of the ultra-high temperature ceramic interface layer in the C/C matrix can be achieved; and infiltration can be carried out under the temperature conditionfar lower than the melting points of Zr, Hf and Ta elementary substances. The invention further provides a ceramic interface modified material, an ultrahigh-temperature ceramic modified composite material and a preparation method of the ultrahigh-temperature ceramic modified composite material.
本发明提供了一种熔盐熔渗材料，由超高温金属和反应性熔盐组成；所述超高温金属为Hf；所述反应性熔盐为K2ZrF6、K2TiF6和K2TaF7中的一种或几种。本发明针对传统反应熔渗C/C复合材料时，多元超高温陶瓷引入C/C基体难、渗入基体深度有限和超高温陶瓷偏聚性极大的问题，在远低于传统反应熔渗温度条件下即可实现多元超高温陶瓷改性C/C复合材料的制备；可实现C/C基体内超高温陶瓷界面层自由设计的目的；可在远低于Zr、Hf和Ta单质熔点的温度条件下熔渗。本发明还提供了一种陶瓷界面改性材料和超高温陶瓷改性复合材料及其制备方法。
Molten salt infiltration material, ceramic interface modified material and preparation method of ultrahigh-temperature ceramic modified composite material
一种熔盐熔渗材料、陶瓷界面改性材料和超高温陶瓷改性复合材料的制备方法
SUN WEI (author) / XU YONGLONG (author) / XIONG XIANG (author) / ZHANG HONGBO (author) / ZENG YI (author) / CHEN ZHAOKE (author) / WANG YALEI (author)
2021-01-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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