料浆烧结制备α-Al2O3/Cr2O3/SiO2阻氢涂层及其性能研究

doi:10.16552/j.cnki.issn1001-1625.2024.1479

摘要/Abstract

摘要： 采用烧结法在316L不锈钢上制备了主要由α-Al₂O₃/Cr₂O₃/SiO₂构成的氧化物复合阻氢涂层,研究了烧结温度、料浆质量比对涂层宏观形貌的影响,并对制备的涂层进行微观结构分析、阻氢性能和抗热震性能测试。结果表明,烧结温度为725 ℃,料浆质量比为1∶5时,制备的涂层表面光滑,孔洞和裂纹数量少,形貌均匀,平均厚度为64 μm。涂层的组成相主要为α-Al₂O₃、Cr₂O₃、SiO₂,其中α-Al₂O₃和SiO₂在涂层中呈层状不均匀分布,Cr₂O₃在涂层中均匀分布。获得的氧化物复合阻氢涂层具有良好的阻氢性能,相对于316L不锈钢,其渗透降低因子值为15.3,并且能经受450 ℃下的20次热循环。

关键词: 316L不锈钢, 氧化铝, 氧化铬, 陶瓷涂层, 烧结法, 阻氢性能, 抗热震性能

Abstract: An oxide composite hydrogen barrier coating was fabricated on 316L stainless steel via the sintering method, mainly composed of α-Al₂O₃/Cr₂O₃/SiO₂. The influences of sintering temperature and slurry mass ratio on the macroscopic morphology of the coating were investigated. The microstructure analysis, hydrogen barrier performance, and thermal shock resistance of the coating were also examined. The findings reveal that when the sintering temperature is 725 ℃, and the slurry mass ratio is 1∶5, the surface of the coating is smooth, the number of pores and cracks is small, and the morphology is uniform, with an average thickness of approximately 64 μm. The composition phases of the coating are α-Al₂O₃, Cr₂O₃, and SiO₂, in which α-Al₂O₃ and SiO₂ are layered and unevenly distributed within the coating, while Cr₂O₃ is uniformly distributed in the coating. The obtained oxide composite hydrogen barrier coating exhibits excellent hydrogen barrier performance, with a reduction factor 15.3 compared to 316L stainless steel, and capable of withstanding 20 times thermal cycles at 450 ℃.

Key words: 316L stainless steel, alumina, chromium oxide, ceramic coating, sintering method, hydrogen barrier performance, thermal shock resistance

中图分类号:

TG174.4

谢屹鹏, 周波, 王岳峰, 王峰, 冯在强, 唐明奇. 料浆烧结制备α-Al₂O₃/Cr₂O₃/SiO₂阻氢涂层及其性能研究[J]. 硅酸盐通报, 2025, 44(6): 2289-2296.

XIE Yipeng, ZHOU Bo, WANG Yuefeng, WANG Feng, FENG Zaiqiang, TANG Mingqi. Preparation and Properties of α-Al₂O₃/Cr₂O₃/SiO₂ HydrogenBarrier Coating by Slurry Sintering[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(6): 2289-2296.

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料浆烧结制备α-Al₂O₃/Cr₂O₃/SiO₂阻氢涂层及其性能研究

Preparation and Properties of α-Al₂O₃/Cr₂O₃/SiO₂ HydrogenBarrier Coating by Slurry Sintering

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