Effect of B4C Content on the Oxidation Resistance of a B4C-SiO2–Albite/Al2O3 Coating at 900 °C

IF 3.4 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Coatings Pub Date : 2025-06-06 DOI:10.3390/coatings15060688

P.L. Chen, Qingming Luo, Haoze Wang, Huan He, Tao Liu, Yingheng Huang, Tianquan Liang

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引用次数: 1

Abstract

B4C is beneficial for forming a glassy film that is effective at impeding oxygen diffusion and improving the oxidation resistance of coatings at high temperature. The effect of B4C content on the oxidation resistance of a B4C-SiO2–Albite/Al2O3 (BSA/AO) double-layer coating by the slurry brushing method at 900 °C was investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) with energy-dispersive spectroscopy (EDS), and differential scanning calorimetry (DSC) with thermogravimetric analysis (TGA) in this work. It is indicated that the composite coating with 20 wt% B4C exhibits excellent oxidation resistance at high temperature, which shows a mass loss of only 0.11% for the coated carbon block after being exposed to 900 °C for 196 h. This is attributed to the in situ formation of a thin, dense glass layer with good self-healing ability at the interface of the B4C-SiO2–Albite/Al2O3 composite coating within 1 h and the persistence and stability of the dense glass layer during exposure. The mechanism is discussed in detail.

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B4C含量对B4C- sio2 -钠长石/Al2O3涂层900℃抗氧化性能的影响

B4C有利于形成玻璃膜，有效地阻止氧扩散，提高涂层在高温下的抗氧化性。采用x射线衍射（XRD）、能谱扫描电镜（SEM）和热重分析（TGA）相结合的差示扫描量热法（DSC）研究了B4C含量对B4C- sio2 -钠长石/Al2O3 （BSA/AO）双层涂层900℃下抗氧化性能的影响。指出复合涂层与20 wt % B4C展览优秀的高温抗氧化性能,显示只有0.11%的质量损失后涂碳块接触196 h 900°C。这是归因于原位形成的薄,致密层玻璃具有良好的自愈能力的接口B4C-SiO2-Albite /氧化铝复合涂层在1 h和密集的玻璃层的持久性和稳定性在曝光。详细讨论了其机理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Coatings Materials Science-Surfaces, Coatings and Films

CiteScore

5.00

自引率

11.80%

发文量

1657

审稿时长

1.4 months

期刊介绍： Coatings is an international, peer-reviewed open access journal of coatings and surface engineering. It publishes reviews, research articles, communications and technical notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. Full experimental and/or methodical details must be provided. There are, in addition, unique features of this journal: * manuscripts regarding research proposals and research ideas will be particularly welcomed * electronic files or software regarding the full details of the calculation and experimental procedure - if unable to be published in a normal way - can be deposited as supplementary material