In situ growth of large-scale and ultrathin carbon nitride films shield common metal substrates from corrosion and oxidation

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2024-10-03 DOI:10.1016/j.corsci.2024.112501

Liangliang Xiong , Huaning Jiang , Mengxue Wu , Yongji Gong , Xiaoqiang Fan , Minhao Zhu

引用次数: 0

Abstract

A centimeter-size carbon nitride (CN) film, with nanoscale thickness, is in situ deposited on various metals through the thermal condensation of melamine, achieving broad and uniform coverage, without any pre- and post-treatments. As the temperature rises, the nitrogen content in the film increases, leading to the part of CN to transform into g-C₃N₄. Benefit from higher Gibbs adsorption free energies of g-C₃N₄ with Cl^- and O₂ in aqueous environment, a 30 nm CN film deposited at 475 ℃ with large g-C₃N₄ network, minimal segregation and low internal stress enables pure metals and alloys to achieve over 90 % protection efficiency.

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原位生长大规模超薄氮化碳薄膜，保护普通金属基底免受腐蚀和氧化

通过三聚氰胺的热凝结，在各种金属上原位沉积出厚度为纳米级的厘米级氮化碳（CN）薄膜，实现了广泛而均匀的覆盖，且无需任何前处理和后处理。随着温度的升高，薄膜中的氮含量增加，导致部分 CN 转化为 g-C3N4。得益于 g-C3N4 在水环境中对 Cl- 和 O2 较高的吉布斯吸附自由能，在 475 ℃ 下沉积的 30 nm CN 薄膜具有较大的 g-C3N4 网络、最小的偏析和较低的内应力，使纯金属和合金的保护效率达到 90% 以上。

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

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.