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(BN/SiC)n composite interface-phase coating, coating fiber and preparation method
The invention discloses a (BN/SiC)n composite interface-phase coating. The (BN/SiC)n composite interface-phase coating has a periodic laminated structure, wherein BN layers and SiC layers are alternatively and periodically overlapped; the thickness of the BN layers is not greater than that of the SiC layer. A coating fiber comprises a fiber substrate and the (BN/SiC)n composite interface-phase coating; the innermost layer closest to the fiber substrate is the NB layer and the outermost layer further away from the fiber substrate is the SiC layer. A preparation method for the coating fiber comprises the steps: cleaning the fiber substrate; putting into a deposition hearth, vacuumizing and filling with inert gases to exchange with air; realizing a preset vacuum degree and a preset temperature; bringing precursors into the reaction by carrier gas in a bubbling manner, maintaining a specified pressure of a reaction system, and alternatively depositing the BN layers and the SiC layers on the fiber substrate through changing a precursor gas source. The product has the advantages of good compatibility, high-temperature resistance, anti-oxidation and good toughening effect.
(BN/SiC)n composite interface-phase coating, coating fiber and preparation method
The invention discloses a (BN/SiC)n composite interface-phase coating. The (BN/SiC)n composite interface-phase coating has a periodic laminated structure, wherein BN layers and SiC layers are alternatively and periodically overlapped; the thickness of the BN layers is not greater than that of the SiC layer. A coating fiber comprises a fiber substrate and the (BN/SiC)n composite interface-phase coating; the innermost layer closest to the fiber substrate is the NB layer and the outermost layer further away from the fiber substrate is the SiC layer. A preparation method for the coating fiber comprises the steps: cleaning the fiber substrate; putting into a deposition hearth, vacuumizing and filling with inert gases to exchange with air; realizing a preset vacuum degree and a preset temperature; bringing precursors into the reaction by carrier gas in a bubbling manner, maintaining a specified pressure of a reaction system, and alternatively depositing the BN layers and the SiC layers on the fiber substrate through changing a precursor gas source. The product has the advantages of good compatibility, high-temperature resistance, anti-oxidation and good toughening effect.
(BN/SiC)n composite interface-phase coating, coating fiber and preparation method
CHENG HAIFENG (Autor:in) / LI JUNSHENG (Autor:in) / LI BIN (Autor:in) / LIU HAITAO (Autor:in) / ZHOU YONGJIANG (Autor:in) / TONG SICHAO (Autor:in) / ZHANG CHAOYANG (Autor:in) / ZHENG WENWEI (Autor:in)
05.08.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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