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Liquid-phase high-entropy carbide-silicon carbide multiphase ceramic precursor, multiphase ceramic and preparation method
The invention discloses a liquid-phase high-entropy carbide-silicon carbide multiphase ceramic precursor, multiphase ceramic and a preparation method, the precursor comprises at least four of Ti, Zr, Hf, V, Nb, Ta, Mo and W, carbon element and silicon element, and the mole number of each metal element accounts for 5-35% of the mole number of the total metal of the precursor; the liquid-phase precursor contains a solvent, the solvent is selected from one or more of toluene, xylene, tetrahydrofuran, ethylene glycol dimethyl ether and ethylene glycol diethyl ether, the precursor is stored for 3 months at 25 DEG C, and the change rate of viscosity is not greater than 10%; after the precursor is cracked, the high-entropy carbide-silicon carbide composite ceramic in which metal elements, silicon elements and carbon elements are uniformly distributed on the nanoscale can be formed.
本发明公开一种液相高熵碳化物‑碳化硅复相陶瓷前驱体及复相陶瓷及制备方法，所述前驱体包括Ti、Zr、Hf、V、Nb、Ta、Mo、W元素中的至少4种、碳元素和硅元素，各金属元素的摩尔数均占前驱体总金属摩尔数的5～35％；所述液相前驱体中含有溶剂，所述溶剂选自甲苯、二甲苯、四氢呋喃、乙二醇二甲醚、乙二醇二乙醚中的一种或多种，且前驱体在25℃下保存3个月，粘度的变化率不大于10％；本发明的前驱体裂解后可形成金属元素、硅元素和碳元素在纳米尺寸上均匀分布的高熵碳化物‑碳化硅复相陶瓷。
Liquid-phase high-entropy carbide-silicon carbide multiphase ceramic precursor, multiphase ceramic and preparation method
The invention discloses a liquid-phase high-entropy carbide-silicon carbide multiphase ceramic precursor, multiphase ceramic and a preparation method, the precursor comprises at least four of Ti, Zr, Hf, V, Nb, Ta, Mo and W, carbon element and silicon element, and the mole number of each metal element accounts for 5-35% of the mole number of the total metal of the precursor; the liquid-phase precursor contains a solvent, the solvent is selected from one or more of toluene, xylene, tetrahydrofuran, ethylene glycol dimethyl ether and ethylene glycol diethyl ether, the precursor is stored for 3 months at 25 DEG C, and the change rate of viscosity is not greater than 10%; after the precursor is cracked, the high-entropy carbide-silicon carbide composite ceramic in which metal elements, silicon elements and carbon elements are uniformly distributed on the nanoscale can be formed.
本发明公开一种液相高熵碳化物‑碳化硅复相陶瓷前驱体及复相陶瓷及制备方法，所述前驱体包括Ti、Zr、Hf、V、Nb、Ta、Mo、W元素中的至少4种、碳元素和硅元素，各金属元素的摩尔数均占前驱体总金属摩尔数的5～35％；所述液相前驱体中含有溶剂，所述溶剂选自甲苯、二甲苯、四氢呋喃、乙二醇二甲醚、乙二醇二乙醚中的一种或多种，且前驱体在25℃下保存3个月，粘度的变化率不大于10％；本发明的前驱体裂解后可形成金属元素、硅元素和碳元素在纳米尺寸上均匀分布的高熵碳化物‑碳化硅复相陶瓷。
Liquid-phase high-entropy carbide-silicon carbide multiphase ceramic precursor, multiphase ceramic and preparation method
一种液相高熵碳化物-碳化硅复相陶瓷前驱体及复相陶瓷及制备方法
YE LI (Autor:in) / ZHAO TONG (Autor:in) / LI ZIHAN (Autor:in) / LI JIA (Autor:in) / HAN WEIJIAN (Autor:in)
16.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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