A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
HfC ceramic oxygen-free precursor as well as preparation method and application thereof
The invention discloses an HfC ceramic precursor and a preparation method and application thereof. The chemical formula of the precursor is Hf (NR2) n (NX2) 4-n, the precursor does not contain oxygen element, and the precursor is pyrolyzed and converted into HfC ceramic at the temperature of 1300-2000 DEG C in an argon atmosphere. The preparation method of the precursor comprises the following steps: carrying out amine exchange reaction on tetra-dimethylamino hafnium or tetra-diethylamino hafnium and an amine compound, and synthesizing under a mild condition to obtain the HfC ceramic precursor. The HfC ceramic precursor prepared by the method is suitable for being used as a matrix raw material of an ultrahigh-temperature ceramic matrix composite material.
本发明公开一种HfC陶瓷前驱体及其制备方法和应用。所述前驱体的化学式为Hf(NR2)n(NX2)4‑n，不含有氧元素，在氩气气氛下经温度1300～2000℃热解转化为HfC陶瓷。所述前驱体的制备方法是将四二甲氨基铪或四二乙氨基铪与胺类化合物进行胺交换反应，在温和条件下合成得到HfC陶瓷前驱体。本发明制备的HfC陶瓷前驱体适合用作超高温陶瓷基复合材料的基体原材料。
HfC ceramic oxygen-free precursor as well as preparation method and application thereof
The invention discloses an HfC ceramic precursor and a preparation method and application thereof. The chemical formula of the precursor is Hf (NR2) n (NX2) 4-n, the precursor does not contain oxygen element, and the precursor is pyrolyzed and converted into HfC ceramic at the temperature of 1300-2000 DEG C in an argon atmosphere. The preparation method of the precursor comprises the following steps: carrying out amine exchange reaction on tetra-dimethylamino hafnium or tetra-diethylamino hafnium and an amine compound, and synthesizing under a mild condition to obtain the HfC ceramic precursor. The HfC ceramic precursor prepared by the method is suitable for being used as a matrix raw material of an ultrahigh-temperature ceramic matrix composite material.
本发明公开一种HfC陶瓷前驱体及其制备方法和应用。所述前驱体的化学式为Hf(NR2)n(NX2)4‑n，不含有氧元素，在氩气气氛下经温度1300～2000℃热解转化为HfC陶瓷。所述前驱体的制备方法是将四二甲氨基铪或四二乙氨基铪与胺类化合物进行胺交换反应，在温和条件下合成得到HfC陶瓷前驱体。本发明制备的HfC陶瓷前驱体适合用作超高温陶瓷基复合材料的基体原材料。
HfC ceramic oxygen-free precursor as well as preparation method and application thereof
一种HfC陶瓷无氧前驱体及其制备方法和用途
WU YUHUAN (author) / ZHAO TONG (author) / YE LI (author) / HAN WEIJIAN (author)
2024-10-18
Patent
Electronic Resource
Chinese
IPC:
C07F
Acyclische, carbocyclische oder heterocyclische Verbindungen, die andere Elemente als Kohlenstoff, Wasserstoff, Halogen, Sauerstoff, Stickstoff, Schwefel, Selen oder Tellur enthalten
,
ACYCLIC, CARBOCYCLIC, OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
/
C04B
Kalk
,
LIME
Ultrahigh-temperature ceramic precursor as well as preparation method and application thereof
| European Patent Office | 2023
Liquid SiBCNO ceramic precursor as well as preparation method and application thereof
| European Patent Office | 2024
Hafnium carbide ceramic organic precursor as well as preparation method and application thereof
| European Patent Office | 2024
High-entropy ceramic organic precursor as well as preparation method and application thereof
| European Patent Office | 2024
| European Patent Office | 2024