掺b SiOC陶瓷的结构演化与高温氧化行为

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2025-10-15 DOI:10.1016/j.jeurceramsoc.2025.117904

Xiumei Wu , Jianwei Teng , Yunping Li , Xiangming Chen , Shu Yu

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引用次数: 0

摘要

以硼酸三乙酯(B(OCH2CH3)3为改性剂，采用溶胶-凝胶法制备硼(B)掺杂SiBOC （SiBOC）陶瓷，并用火花等离子烧结（SPS）法制备SiBOC陶瓷体。研究了不同B掺杂量和热解温度下SiBOC陶瓷的结构演变。同时，研究了不同SiBOC陶瓷块体在1200℃和1500℃下的氧化行为。结果表明，氧化过程中形成的B2O3和硼硅酸盐可以降低sio2基氧化层的黏度，提高其自愈能力。S0.05B-1600陶瓷在1200℃氧化4 h后，氧化率最低，为6.82 × 10−5 mg2/(cm4·h)，氧化层致密连续，自封闭能力强，氧扩散系数低。

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Structure evolution and high-temperature oxidation behavior of B-doped SiOC ceramic

Boron (B)-doped SiOC (SiBOC) ceramics were prepared by sol-gel method with triethyl borate (B(OCH₂CH₃)₃ as modifier, and SiBOC ceramic bulks were prepared by spark plasma sintering (SPS). The structure evolutions of SiBOC ceramics with various B doping content and pyrolysis temperature were studied. Meanwhile, the oxidation behaviors of different SiBOC ceramic bulks at 1200 °C and 1500 °C were investigated. Results showed that B₂O₃ and borosilicate formed during oxidation can reduce the viscosity of SiO₂-based oxide layer and improve its self-healing ability. S0.05B-1600 ceramic showed the highest oxidation resistance, with the lowest oxidation rate of 6.82 × 10⁻⁵ mg²/(cm⁴·h) after oxidation 4 h at 1200 °C, for the dense and continuous oxide layer with high self-sealing ability and low oxygen diffusion coefficient.

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来源期刊

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.