提高固体氧化物燃料电池互连层耐高温腐蚀性能的Ni-Co膜的制备

IF 1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials at High Temperatures Pub Date : 2023-03-29 DOI:10.1080/09603409.2023.2195706

Rungsan Sriwilai, Piyapong Tongsong, Jennarong Tungtrongpairoj, P. Visuttipitukul, Kattareeya Taweesup

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引用次数: 1

摘要

为了提高固体氧化物燃料电池(SOFCs)不锈钢互连件的耐高温腐蚀性能，采用电镀技术制备了低成本的Ni-Co合金涂层。采用扫描电镜(SEM)、x射线衍射仪(XRD)和原子力显微镜(AFM)研究了镀层对Ni-Co合金表面形貌、显微组织和成分的影响。制备了厚度约为2微米的Ni-Co涂层，并在不同的Ni-Co摩尔比下进行了比较。在马弗炉中，在室温800℃下腐蚀110 h，对Ni-Co涂层的腐蚀性能进行了评价。氧化试验后，在Ni-Co涂层样品上发现了Co2NiO4尖晶石氧化物和Cr2O3。结果表明，镍钴合金电沉积涂层后，钢基体的防腐性能提高了20倍，其抛物线速率常数较低。含Co2NiO4氧化物的涂层光滑，缺陷少，提高了钢样品的抗氧化性。

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Fabrication of Ni-Co film for enhancing the high-temperature corrosion resistance of interconnects in solid oxide fuel cells (SOFCs)

ABSTRACT Low-cost Ni-Co alloy coating was performed by electroplating technique to improve the high-temperature corrosion resistance of stainless steel interconnects in solid oxide fuel cells (SOFCs). The effect of plating on the surface morphology, microstructure and composition of Ni-Co alloys was investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and atomic force microscopy (AFM). The Ni-Co coatings were fabricated at thickness of around two microns and compared at different Ni-Co molar ratios. Corrosion performance of Ni-Co coating was evaluated in a muffle furnace under ambient atmosphere at 800℃ for 110 h. Co2NiO4 spinel oxides and Cr2O3 were found on the Ni-Co coated samples after the oxidation test. Results indicated that steel substrate corrosion protection improved with a low parabolic rate constant of 20 times after Ni-Co alloy electrodeposition coating. A smooth coating layer containing Co2NiO4 oxide with fewer defects promoted high oxidation resistance of the steel samples.

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来源期刊

Materials at High Temperatures 工程技术-材料科学：综合

CiteScore

1.90

自引率

15.40%

发文量

审稿时长

>12 weeks

期刊介绍： Materials at High Temperatures welcomes contributions relating to high temperature applications in the energy generation, aerospace, chemical and process industries. The effects of high temperatures and extreme environments on the corrosion and oxidation, fatigue, creep, strength and wear of metallic alloys, ceramics, intermetallics, and refractory and composite materials relative to these industries are covered. Papers on the modelling of behaviour and life prediction are also welcome, provided these are validated by experimental data and explicitly linked to actual or potential applications. Contributions addressing the needs of designers and engineers (e.g. standards and codes of practice) relative to the areas of interest of this journal also fall within the scope. The term ''high temperatures'' refers to the subsequent temperatures of application and not, for example, to those of processing itself. Materials at High Temperatures publishes regular thematic issues on topics of current interest. Proposals for issues are welcomed; please contact one of the Editors with details.