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Carbonitride ultra-high-temperature ceramic as well as preparation method and application thereof
The invention discloses carbonitride ultrahigh-temperature ceramic as well as a preparation method and application thereof, and relates to the technical field of ultrahigh-temperature ceramic materials. The method comprises the following steps: performing low-temperature cross-linking curing on a carbonitride precursor prepared by reacting transition metal chloride, a polyamine compound and a polyol compound, then heating to complete organic-inorganic conversion, and finally performing high-temperature sintering on a heat treatment product to prepare the carbonitride ultrahigh-temperature ceramic. According to the method, the nitrogen source is introduced into the heat treatment atmosphere, so that the precursor is subjected to carbon thermal reduction and nitridation reaction in the high-temperature cracking process at the same time, and compared with traditional inert gas protection, nitrogen loss of the precursor at high temperature is avoided, and the high-quality carbonitride ultrahigh-temperature ceramic can be simply and efficiently prepared.
本发明公开了一种碳氮化物超高温陶瓷及其制备方法和应用，涉及超高温陶瓷材料技术领域。该方法包括将过渡金属氯化物、多胺类化合物和多元醇类化合物反应制备的碳氮化物先驱体低温交联固化，随后升温完成有机‑无机转化，最后将热处理产物进行高温烧结，制备出碳氮化物超高温陶瓷。本发明通过在热处理气氛中引入氮源，使先驱体高温裂解过程中同时发生碳热还原和氮化反应，与传统的惰性气体保护相比，避免先驱体高温下氮流失，能够简单高效制备高品质碳氮化物超高温陶瓷。
Carbonitride ultra-high-temperature ceramic as well as preparation method and application thereof
The invention discloses carbonitride ultrahigh-temperature ceramic as well as a preparation method and application thereof, and relates to the technical field of ultrahigh-temperature ceramic materials. The method comprises the following steps: performing low-temperature cross-linking curing on a carbonitride precursor prepared by reacting transition metal chloride, a polyamine compound and a polyol compound, then heating to complete organic-inorganic conversion, and finally performing high-temperature sintering on a heat treatment product to prepare the carbonitride ultrahigh-temperature ceramic. According to the method, the nitrogen source is introduced into the heat treatment atmosphere, so that the precursor is subjected to carbon thermal reduction and nitridation reaction in the high-temperature cracking process at the same time, and compared with traditional inert gas protection, nitrogen loss of the precursor at high temperature is avoided, and the high-quality carbonitride ultrahigh-temperature ceramic can be simply and efficiently prepared.
本发明公开了一种碳氮化物超高温陶瓷及其制备方法和应用，涉及超高温陶瓷材料技术领域。该方法包括将过渡金属氯化物、多胺类化合物和多元醇类化合物反应制备的碳氮化物先驱体低温交联固化，随后升温完成有机‑无机转化，最后将热处理产物进行高温烧结，制备出碳氮化物超高温陶瓷。本发明通过在热处理气氛中引入氮源，使先驱体高温裂解过程中同时发生碳热还原和氮化反应，与传统的惰性气体保护相比，避免先驱体高温下氮流失，能够简单高效制备高品质碳氮化物超高温陶瓷。
Carbonitride ultra-high-temperature ceramic as well as preparation method and application thereof
一种碳氮化物超高温陶瓷及其制备方法和应用
ZHANG YULEI (Autor:in) / LI XUE (Autor:in) / FU YANQIN (Autor:in) / LI TAO (Autor:in) / ZHANG JIAN (Autor:in) / ZHAO JUNHAO (Autor:in) / LI JIAHAN (Autor:in)
27.08.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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