Improved strategy of oxygen-assist heat treatment to prepare the antioxidant coating for carbon/carbon composites

IF 5.3 2区 材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS Surface & Coatings Technology Pub Date : 2024-10-30 DOI:10.1016/j.surfcoat.2024.131500
Huafeng Quan , Woqian Gao , Shanying Sui , Dong Huang , Lianyi Wang , Chong Ye , Xiaotian Yang , Xiaohui Dong , Yuefeng Zhang , Ruixuan Tan , Ruiying Luo , Jinshui Liu
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Abstract

In this study, a feasible slurry sintering strategy with the oxygen-assist heat treatment was developed to realize one-step full densification of high-temperature ceramic coating. The results show the stable oxidation resistance of the SiC/Si-B-Zr-Cr/SiC coating, which exhibits an overall mass loss of only 2.28 % after 1400 °C/300 h oxidation and high fracture toughness of 2.13–2.54 MPa·m1/2. The protection/failure mechanisms reveal that the formation of ZrSiO4@ZrO2 alleviates stress mismatch in the coating, competing with the contribution of coating failure arising from the increasing tensile stress. The liquid-phase convection inside the coating can reconstruct its structure and composition, thereby improving the thermal performance.
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制备碳/碳复合材料抗氧化涂层的氧辅助热处理改进策略
本研究开发了一种可行的浆料烧结策略,通过氧辅助热处理实现了高温陶瓷涂层的一步全致密化。结果表明,SiC/Si-B-Zr-Cr/SiC 涂层具有稳定的抗氧化性,在 1400 °C/300 h 氧化后,其整体质量损失仅为 2.28%,断裂韧性高达 2.13-2.54 MPa-m1/2。保护/失效机理显示,ZrSiO4@ZrO2 的形成缓解了涂层中的应力失配,与拉伸应力增加导致的涂层失效形成竞争。涂层内部的液相对流可以重构其结构和成分,从而改善热性能。
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来源期刊
Surface & Coatings Technology
Surface & Coatings Technology 工程技术-材料科学:膜
CiteScore
10.00
自引率
11.10%
发文量
921
审稿时长
19 days
期刊介绍: Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.
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