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Molybdenum disilicide/silicon carbide three-dimensional polymer precursor ceramic and preparation method thereof
The invention discloses molybdenum disilicide/silicon carbide three-dimensional polymer precursor ceramic and a preparation method thereof, belonging to preparation of ceramic materials. The preparation method comprises the following steps: putting precursor PVG powder into a graphite paper boat and carrying out high-temperature cracking under the protection of an inert atmosphere; mixing MoSi2, cracked SiC(rGO)p ceramic particles and the precursor PVG powder to form a MoSi2/SiC(rGO)p/PVG mixture, carrying out ball milling and uniform mixing in an alcohol medium, and then drying the MoSi2/SiC(rGO)p/PVG mixture in an oven; and loading the mixture into a mold for compression molding, conducing demolding to obtain a biscuit, putting the biscuit into an inert atmosphere tube furnace for high-temperature sintering, and conducting cooling along with the furnace to obtain black molybdenum disilicide/silicon carbide three-dimensional polymer precursor ceramic, namely 3D-SiC(rGO, MoSi2x) nanometer composite block ceramic for short, wherein x is the mass fraction of silicon carbide in the whole biscuit. The obtained ceramic is high in heat conductivity and electric conductivity and good in formability and component uniformity; and the preparation method is simple and economical in process.
二硅化钼/碳化硅三维聚合物先驱体陶瓷及其制备方法，涉及陶瓷材料制备。将先驱体PVG粉末置于石墨纸舟中在惰性气氛保护下高温裂解，将MoSi2和裂解后的SiC(rGO)p陶瓷颗粒、先驱体PVG粉末混合形成MoSi2/SiC(rGO)p/PVG混合物，然后在酒精介质中进行球磨混合均匀后置于烘箱中烘干；装入模具中模压成型，脱模后得素坯，放入惰性气氛管式炉内进行高温烧结，随炉冷却后即得到黑色的二硅化钼/碳化硅三维聚合物先驱体陶瓷，简称3D‑SiC(rGO,MoSi2x)纳米复合块体陶瓷，其中x为二硅化钼占整个素坯的质量分数。具有较高的热导率和电导率，良好成型性与成分均匀性；工艺简单经济。
Molybdenum disilicide/silicon carbide three-dimensional polymer precursor ceramic and preparation method thereof
The invention discloses molybdenum disilicide/silicon carbide three-dimensional polymer precursor ceramic and a preparation method thereof, belonging to preparation of ceramic materials. The preparation method comprises the following steps: putting precursor PVG powder into a graphite paper boat and carrying out high-temperature cracking under the protection of an inert atmosphere; mixing MoSi2, cracked SiC(rGO)p ceramic particles and the precursor PVG powder to form a MoSi2/SiC(rGO)p/PVG mixture, carrying out ball milling and uniform mixing in an alcohol medium, and then drying the MoSi2/SiC(rGO)p/PVG mixture in an oven; and loading the mixture into a mold for compression molding, conducing demolding to obtain a biscuit, putting the biscuit into an inert atmosphere tube furnace for high-temperature sintering, and conducting cooling along with the furnace to obtain black molybdenum disilicide/silicon carbide three-dimensional polymer precursor ceramic, namely 3D-SiC(rGO, MoSi2x) nanometer composite block ceramic for short, wherein x is the mass fraction of silicon carbide in the whole biscuit. The obtained ceramic is high in heat conductivity and electric conductivity and good in formability and component uniformity; and the preparation method is simple and economical in process.
二硅化钼/碳化硅三维聚合物先驱体陶瓷及其制备方法，涉及陶瓷材料制备。将先驱体PVG粉末置于石墨纸舟中在惰性气氛保护下高温裂解，将MoSi2和裂解后的SiC(rGO)p陶瓷颗粒、先驱体PVG粉末混合形成MoSi2/SiC(rGO)p/PVG混合物，然后在酒精介质中进行球磨混合均匀后置于烘箱中烘干；装入模具中模压成型，脱模后得素坯，放入惰性气氛管式炉内进行高温烧结，随炉冷却后即得到黑色的二硅化钼/碳化硅三维聚合物先驱体陶瓷，简称3D‑SiC(rGO,MoSi2x)纳米复合块体陶瓷，其中x为二硅化钼占整个素坯的质量分数。具有较高的热导率和电导率，良好成型性与成分均匀性；工艺简单经济。
Molybdenum disilicide/silicon carbide three-dimensional polymer precursor ceramic and preparation method thereof
二硅化钼/碳化硅三维聚合物先驱体陶瓷及其制备方法
YAO RONGQIAN (Autor:in) / HUANG WENYAN (Autor:in) / ZHENG YINONG (Autor:in) / HAN YUCHEN (Autor:in) / HAN HAOZHE (Autor:in) / AN ZIYI (Autor:in) / CHEN FENG (Autor:in)
30.10.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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