A kind of multi-layer interface coating and its preparation method and application

An interface coating and coating technology, applied in the field of multi-layer interface coating and its preparation, can solve the problems of poor oxidation resistance and inability to protect materials from water and oxygen environment erosion for a long time, achieve excellent oxidation resistance and improve application Temperature range and stability in use, ensuring the effect of strengthening and toughening effect
CN109608208BActive Publication Date: 2021-12-31SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Publication Date
2021-12-31

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Abstract

The present invention relates to a kind of multi-layer interfacial coating and its preparation method and application, and described multi-layer interfacial coating comprises SiBN coating and Si 3 N 4 For the coating, the number of layers of the SiBN coating n≥1, preferably 2-5.
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Description

technical field

[0001] The invention relates to a multilayer interface coating, a preparation method and application thereof, and belongs to the field of interface phases of ceramic matrix composite materials. Background technique

[0002] Continuous fiber reinforced ceramic matrix composites mainly include three categories: C / C, C / SiC and SiC / SiC, which have low density, chemical corrosion resistance, high specific strength, high specific modulus, and excellent thermal stability. Aviation, aerospace, nuclear energy and other fields are widely used. Compared with the first two types of composite materials, SiC / SiC composite materials have good oxidation resistance compared to carbon fibers due to the use of SiC fibers as the reinforcement phase. The reinforcement phase mainly used in matrix composite materials, taking aero-engines as an example, currently using SiC / SiC composite materials has been used in engine tailpipe seals and regulators, guide vanes, combustion chamber ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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