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A platform for research: civil engineering, architecture and urbanism
The invention discloses a high-performance carbon-carbon crucible surface coating and a preparation method thereof, and relates to the technical field of carbon-based composite materials. The invention discloses a high-performance carbon-carbon crucible surface coating. The coating is mainly characterized in that a SiC transition layer and a LaB6/Y3Al5O12 outer coating are sequentially deposited on a substrate of a carbon-carbon crucible, the SiC transition layer is deposited by adopting a multi-time embedding method, and the LaB6/Y3Al5O12 outer coating is formed by coating by adopting a slurry method; and the SiC transition layer is formed by dipping treatment of an organic silicon impregnant and then brushing of outer coating slurry. The invention further discloses a preparation method of the carbon-carbon crucible surface coating. The carbon-carbon crucible surface coating provided by the invention has excellent high-temperature strength, high-temperature toughness and high wear resistance, is good in thermal shock resistance and chemical stability, and has relatively high thermal expansion compatibility with a carbon-carbon matrix, so that the service life of the carbon-carbon crucible is remarkably prolonged, the damage resistance degree of the carbon-carbon crucible is remarkably improved, and the carbon-carbon crucible can be used for resisting oxidation for a long time at 1,750 DEG C.
本发明公开一种高性能的碳碳坩埚表面涂层及其制备方法，涉及碳基复合材料技术领域。本发明公开的高性能的碳碳坩埚表面涂层，主要通过先在碳碳坩埚的基底上先后沉积一层SiC过渡层和一层LaB6/Y3Al5O12外涂层，所述SiC过渡层采用多次包埋法沉积，所述LaB6/Y3Al5O12外涂层采用料浆法涂覆而成，且SiC过渡层通过有机硅浸渍剂浸渍处理后再涂刷外涂层浆料而成，本发明还公开了碳碳坩埚表面涂层的制备方法。本发明提供的碳碳坩埚表面涂层具有优异的高温强度、高温韧性和高耐磨性，并且抗热震性好、化学稳定性好，同时与碳碳基体具有较高的热膨胀相容性，显著提高了碳碳坩埚的使用寿命和耐损程度，且使碳碳坩埚能在1750℃下长期抗氧化使用。
The invention discloses a high-performance carbon-carbon crucible surface coating and a preparation method thereof, and relates to the technical field of carbon-based composite materials. The invention discloses a high-performance carbon-carbon crucible surface coating. The coating is mainly characterized in that a SiC transition layer and a LaB6/Y3Al5O12 outer coating are sequentially deposited on a substrate of a carbon-carbon crucible, the SiC transition layer is deposited by adopting a multi-time embedding method, and the LaB6/Y3Al5O12 outer coating is formed by coating by adopting a slurry method; and the SiC transition layer is formed by dipping treatment of an organic silicon impregnant and then brushing of outer coating slurry. The invention further discloses a preparation method of the carbon-carbon crucible surface coating. The carbon-carbon crucible surface coating provided by the invention has excellent high-temperature strength, high-temperature toughness and high wear resistance, is good in thermal shock resistance and chemical stability, and has relatively high thermal expansion compatibility with a carbon-carbon matrix, so that the service life of the carbon-carbon crucible is remarkably prolonged, the damage resistance degree of the carbon-carbon crucible is remarkably improved, and the carbon-carbon crucible can be used for resisting oxidation for a long time at 1,750 DEG C.
本发明公开一种高性能的碳碳坩埚表面涂层及其制备方法，涉及碳基复合材料技术领域。本发明公开的高性能的碳碳坩埚表面涂层，主要通过先在碳碳坩埚的基底上先后沉积一层SiC过渡层和一层LaB6/Y3Al5O12外涂层，所述SiC过渡层采用多次包埋法沉积，所述LaB6/Y3Al5O12外涂层采用料浆法涂覆而成，且SiC过渡层通过有机硅浸渍剂浸渍处理后再涂刷外涂层浆料而成，本发明还公开了碳碳坩埚表面涂层的制备方法。本发明提供的碳碳坩埚表面涂层具有优异的高温强度、高温韧性和高耐磨性，并且抗热震性好、化学稳定性好，同时与碳碳基体具有较高的热膨胀相容性，显著提高了碳碳坩埚的使用寿命和耐损程度，且使碳碳坩埚能在1750℃下长期抗氧化使用。
High-performance carbon-carbon crucible surface coating and preparation method thereof
一种高性能的碳碳坩埚表面涂层及其制备方法
LI LING (author)
2021-12-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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