Prospects of using metallic nanocoatings to improve the operational characteristics of welded joints

Procedia Structural Integrity Pub Date : 2024-01-01 DOI:10.1016/j.prostr.2024.04.041

Liubomyr Poberezhnyi , Sylvia Kessler , Marcus Rutner , Niclas Spalek , Igor Okipnyi

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Abstract

The potential of employing nanostructured metallic multilayer to increase the durability and extend the service life of welded joints of metal structures is analyzed. Using a nickel and copper-based multilayer nanocoating as an example, a notable increase in the durability of the welded joint of up to 300...600% is observed. Corrosion tests reveal that the use of nickel and copper nanostructured metallic multilayer leads to the localization of corrosion processes at the "base metal-nanocoating" boundary. Considering the significant improvement of fatigue characteristics of welded joints and lower corrosion rate compared to welds without lamination, Ni-Cu nanocoatings can be used on offshore structures, provided that the condition of the protective anti-corrosion coating is monitored to mitigate the risk of galvanic corrosion at the base metal-nanolamination boundary.

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使用金属纳米涂层改善焊接接头操作特性的前景

本文分析了采用纳米结构金属多层涂层提高金属结构焊接接头耐久性和延长其使用寿命的潜力。以基于镍和铜的多层纳米涂层为例，观察到焊点的耐久性显著提高了 300...600%。腐蚀测试表明，使用镍和铜纳米结构金属多层涂层会导致腐蚀过程在 "基体金属-纳米涂层 "边界局部发生。考虑到焊接接头疲劳特性的显著改善，以及与无层压焊缝相比更低的腐蚀率，镍铜纳米涂层可用于海上结构，但前提是必须监测保护性防腐蚀涂层的状况，以降低基体金属-纳米涂层边界的电化学腐蚀风险。

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