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Method for preparing SiNCB ceramic material
The invention discloses a method for preparing a SiNCB ceramic material, relates to a method for preparing a ceramic material, and aims to solve the problems that a SiNCB ceramic material prepared by using a conventional method has high possibility of crystallization and instable at high temperature. The method comprises the following steps: I, putting a nitrogen source, a silicon source, an acid-binding agent and a solvent into a reactor to react at the room temperature under the protection of an inert gas; II, performing vacuum extraction filtration on the reaction product, mixing with borane tetrahydrofuran, and putting into a reactor to react; III, adding a boron trichloride n-hexane into the reactor to react, and heating to be the room temperature; IV, performing extraction filtration on the product, and performing vacuum rotary evaporation to obtain a ceramic precursor; V, putting the ceramic precursor into a tubular furnace, performing pyrolysis, and cooling to be the room temperature along the furnace to obtain the SiNCB ceramic material. The SiNCB ceramic material is excellent in oxidation resistance at 1450 DEG C and is not decomposed or crystallized when being used for a long time. The method can be applied to the field of silicon-based ceramic materials.
Method for preparing SiNCB ceramic material
The invention discloses a method for preparing a SiNCB ceramic material, relates to a method for preparing a ceramic material, and aims to solve the problems that a SiNCB ceramic material prepared by using a conventional method has high possibility of crystallization and instable at high temperature. The method comprises the following steps: I, putting a nitrogen source, a silicon source, an acid-binding agent and a solvent into a reactor to react at the room temperature under the protection of an inert gas; II, performing vacuum extraction filtration on the reaction product, mixing with borane tetrahydrofuran, and putting into a reactor to react; III, adding a boron trichloride n-hexane into the reactor to react, and heating to be the room temperature; IV, performing extraction filtration on the product, and performing vacuum rotary evaporation to obtain a ceramic precursor; V, putting the ceramic precursor into a tubular furnace, performing pyrolysis, and cooling to be the room temperature along the furnace to obtain the SiNCB ceramic material. The SiNCB ceramic material is excellent in oxidation resistance at 1450 DEG C and is not decomposed or crystallized when being used for a long time. The method can be applied to the field of silicon-based ceramic materials.
Method for preparing SiNCB ceramic material
YANG ZHIHUA (Autor:in) / ZHANG XI (Autor:in) / CAI DELONG (Autor:in) / JIA DECHANG (Autor:in) / ZHOU YU (Autor:in)
06.05.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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