Microstructural, mechanical, room, and high temperature tribological properties of graphene oxide reinforced plasma sprayed alumina nanocomposite coatings

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Materials Research Pub Date : 2024-04-29 DOI:10.1557/s43578-024-01347-z

Suraj Prasad, S. Sharma, Chintham Satish, Pushpender Singh, Satish Indupuri, P. Sai Kiran, Niranjan Pandit, Shailesh Mani Pandey, Anup Kumar Keshri

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Abstract

High-temperature tribological performance novel coatings are much in demand, which requires improving the wear performance of prevalent and widespread ceramic coatings used presently. Hence, graphene oxide (GO) reinforced alumina coatings (0.5–2 wt %) were deposited on steel substrates via atmospheric plasma spraying (APS), enhancing wear performance for high-temperature applications. With 1.5 wt% GO, coating density increased from 88.5 to 94.61%, elevating hardness and elastic modulus by ~ 47.5% and ~ 62.9%, respectively. Tribological analysis at room temperature and elevated temperatures (473 K, 673 K, 873 K) demonstrated a significant reduction in friction coefficient and wear rate compared to monolithic alumina coatings. The enhanced wear resistance is attributed to the tribo-chemical layer formation and increased hardness, suggesting potential for the development of high-temperature operating coatings. This coating is thought to have the potential to open the door to the development of high-temperature operating coatings.

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氧化石墨烯增强等离子喷涂氧化铝纳米复合涂层的微结构、机械、室温和高温摩擦学特性

高温摩擦学性能的新型涂层需求量很大，这就需要改善目前普遍使用的陶瓷涂层的磨损性能。因此，通过大气等离子喷涂（APS）在钢基材上沉积了氧化石墨烯（GO）增强氧化铝涂层（0.5-2 wt %），从而提高了高温应用的磨损性能。1.5 wt% 的 GO 使涂层密度从 88.5% 增加到 94.61%，硬度和弹性模量分别提高了 ~ 47.5% 和 ~ 62.9%。室温和高温（473 K、673 K、873 K）下的摩擦学分析表明，与整体氧化铝涂层相比，摩擦系数和磨损率显著降低。耐磨性的增强归功于三重化学层的形成和硬度的提高，这表明该涂层具有开发高温操作涂层的潜力。这种涂层被认为有可能为高温操作涂层的开发打开一扇大门。

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来源期刊

Journal of Materials Research 工程技术-材料科学：综合

CiteScore

4.50

自引率

3.70%

发文量

362

审稿时长

2.8 months

期刊介绍： Journal of Materials Research (JMR) publishes the latest advances about the creation of new materials and materials with novel functionalities, fundamental understanding of processes that control the response of materials, and development of materials with significant performance improvements relative to state of the art materials. JMR welcomes papers that highlight novel processing techniques, the application and development of new analytical tools, and interpretation of fundamental materials science to achieve enhanced materials properties and uses. Materials research papers in the following topical areas are welcome. • Novel materials discovery • Electronic, photonic and magnetic materials • Energy Conversion and storage materials • New thermal and structural materials • Soft materials • Biomaterials and related topics • Nanoscale science and technology • Advances in materials characterization methods and techniques • Computational materials science, modeling and theory