一种碳硅氧复合陶瓷保护层改性石墨碳套及其制备方法

By generating a gradient composite ceramic protective layer in situ on the surface and within the pores of the graphite carbon sleeve, the problems of easy oxidation and wear of the graphite carbon sleeve at high temperatures are solved, achieving a protective effect of high hardness and low porosity, and extending its service life.

CN122404035APending Publication Date: 2026-07-17SHANDONG NORMAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG NORMAL UNIV
Filing Date
2026-05-12
Publication Date
2026-07-17

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Abstract

本发明公开了一种碳硅氧复合陶瓷保护层改性石墨碳套及其制备方法，属于石墨碳套抗氧化、强化处理技术领域。其包括石墨碳套、结合层以及致密层；结合层与致密层为反应烧结一体成型的复合结构；结合层中碳化硅的含量自内向外梯度增加。结合层深度根植并锚固于石墨本体材料孔隙中，从根本上解决了现有技术中涂层结合力弱、易脱落的问题。致密层主体成分仍以碳为主，确保了与石墨基体极佳的热膨胀匹配性，避免了因热应力产生的微裂纹，同时具有极低的显气孔率与氧扩散速率，能长效阻隔氧化介质。该结构使得保护层同时具备高硬度、高耐磨性、优异的抗高温氧化和抗热震性能，从而实现了抵抗磨损、防止结瘤、大幅延长辊套运行寿命的核心效果。
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