TUDY OF THE INFLUENCE OF THE ACCUMULATED DOSE OF DAMAGE IN THE NEAR-SURFACE LAYER ON RESISTANCE TO EXTERNAL INFLUENCES ASSOCIATED WITH CORROSION PROCESSES DURING HIGH-TEMPERATURE ANNEALING

Q3 Engineering
A. Kozlovskiy
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Abstract

Abstract. Investigating the challenges associated with the structural and strength degradation of ceramic fuel cells, which hold significant potential for hydrogen production through electrolysis methods, is a current focus ofresearch. Understanding the degradation processes and their occurrence rate is crucial in the assessment of the efficacy of these ceramics for applications in alternative energy production, specifically in the realm of hydrogen energy. The aim of this study is to ascertain the impact of doping ceramics with aluminum nitride NiAl2O4, irradiated with protons with a dose of approximately 50 dpa, on resistance to high-temperature degradation, and associated corrosive processes of oxidation and swelling, as well as migration processes of implanted hydrogen. Three types of ceramics were selected as objects for study: NiAl2O4ceramics, NiAl2O4ceramics stabilized with 0.05 M AlN, NiAl2O4ceramics stabilized with 0.15 M AlN, that are distinguished by the formation of impurity phases in Al7O3N8, with an orthorhombic type of crystal lattice. As a result of high-temperature tests, it was observed that NiAl2O4ceramics, when stabilized, exhibit reduced susceptibility to destructive alterations in strength characteristics, primarily attributed to the deformation distortion of the crystal structure caused by its swelling. These processes are associated with an augmentation in the thermal expansion of the crystal structure, manifested in the deformation swelling of the crystal lattice volume.
研究近表层损伤累积剂量对高温退火过程中抵抗与腐蚀过程相关的外部影响的影响
摘要陶瓷燃料电池具有通过电解方法制氢的巨大潜力,研究与陶瓷燃料电池的结构和强度降解相关的挑战是当前的研究重点。了解降解过程及其发生率对于评估这些陶瓷在替代能源生产(特别是氢能领域)中的应用效果至关重要。本研究的目的是确定在陶瓷中掺入氮化铝 NiAl2O4,并用剂量约为 50 dpa 的质子进行辐照,对耐高温降解、相关的氧化和膨胀腐蚀过程以及植入氢迁移过程的影响。我们选择了三种陶瓷作为研究对象:分别是 NiAl2O4 陶瓷、用 0.05 M AlN 稳定的 NiAl2O4 陶瓷和用 0.15 M AlN 稳定的 NiAl2O4 陶瓷,它们的特点是在 Al7O3N8 中形成杂质相,晶格类型为正交菱形。高温测试结果表明,NiAl2O4 陶瓷经稳定化处理后,强度特性发生破坏性变化的几率降低,这主要归因于膨胀引起的晶体结构变形。这些过程与晶体结构的热膨胀有关,表现为晶格体积的变形膨胀。
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CiteScore
1.10
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0.00%
发文量
15
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