A case study: anti-corrosion performances of plasma sprayed AT13 coatings on CrZrCu thin wall cylinder with adjusted parameters for controlling deformation

IF 2.3 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING Anti-corrosion Methods and Materials Pub Date : 2024-09-13 DOI:10.1108/acmm-07-2024-3050

Jian Hou, Chenyang Liu, Han Wang, Zilin Li, Guosheng Huang, Li Ma, Bo Jiang Ma

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Abstract

Purpose

This paper aims to control the deformation of a thin wall CrZrCu cylinder components (wall thickness 5 mm, diameter 400 mm) during thermal spray alumina-titania (AT13) coating by adjusting the spray parameters without deteriorating its quality evidently.

Design/methodology/approach

The deformation was controlled by lowering the temperature of the component in the way of adjusting the spray parameters. The main parameters adjust included extending the spraying distance, from normally 120 mm to 140 mm, decreasing plasma power from 50to 42 kW. An alumina-titanium (AT13) ceramic coating was chosen for protecting the substrate from corrosion. Microscopic morphology and phase analysis, insulation resistance testing, neutral salt test and electrochemical method were used to analyze the anti-corrosion and insulation performances of the coating.

Findings

The results indicate that, after adjusting the spraying parameters, the coating has a relatively high porosity, with an average value of 8.96 ± 0.77%. The bonding strength of the coating is relatively low, with an average value of 17.69 ± 0.85 MPa. However, after sealing, the polarization resistance of the coating in seawater can be maintained above 6.25 × 10⁶ Ω.cm² for an extended period. The coating has a high resistance (=1.1 M Ω), and there is no apparent galvanic corrosion when contacted with TC4 alloy. Additionally, analysis of corrosion products on the sample surface reveals that the samples with sprayed alumina-titanium ceramic show no copper corrosion products on the surface, and the coating remains intact, effectively isolating the corrosive medium.

Originality/value

By adjusting the spraying parameters, the deformation of the cylinder thin-walled component can be effectively controlled, making the φ 400 × 392 mm (thickness 5 mm) CrZrCu cylinder com-ponent with a maximum diameter deformation of only 0.14 mm. The satisfactory corrosion performances can be achieved under adjusting spraying parameters, which can guarantee the application of ceramic coating for weapon launching system of naval ships.

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案例研究：调整变形控制参数后等离子喷涂 AT13 涂层在 CrZrCu 薄壁圆筒上的防腐蚀性能

目的本文旨在通过调整喷涂参数，在不明显降低质量的情况下，控制薄壁 CrZrCu 缸体部件（壁厚 5 毫米，直径 400 毫米）在热喷涂氧化铝-钛（AT13）涂层过程中的变形。主要的参数调整包括将喷射距离从通常的 120 毫米延长到 140 毫米，将等离子功率从 50 千瓦降低到 42 千瓦。为保护基体免受腐蚀，选用了氧化铝-钛（AT13）陶瓷涂层。结果表明，调整喷涂参数后，涂层的孔隙率相对较高，平均值为 8.96 ± 0.77%。涂层的粘结强度相对较低，平均值为 17.69 ± 0.85 兆帕。然而，密封后，涂层在海水中的极化电阻可长期保持在 6.25 × 106 Ω.cm2 以上。涂层具有很高的电阻（=1.1 M Ω），与 TC4 合金接触时没有明显的电化学腐蚀。此外，对样品表面腐蚀产物的分析表明，喷涂了氧化铝-钛陶瓷的样品表面没有铜腐蚀产物，涂层保持完好，有效隔离了腐蚀介质。在调整喷涂参数的情况下，可获得令人满意的腐蚀性能，为陶瓷涂层在舰船武器发射系统中的应用提供了保障。

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

Anti-corrosion Methods and Materials 工程技术-冶金工程

CiteScore

2.80

自引率

16.70%

发文量

审稿时长

13.5 months

期刊介绍： Anti-Corrosion Methods and Materials publishes a broad coverage of the materials and techniques employed in corrosion prevention. Coverage is essentially of a practical nature and designed to be of material benefit to those working in the field. Proven applications are covered together with company news and new product information. Anti-Corrosion Methods and Materials now also includes research articles that reflect the most interesting and strategically important research and development activities from around the world. Every year, industry pays a massive and rising cost for its corrosion problems. Research and development into new materials, processes and initiatives to combat this loss is increasing, and new findings are constantly coming to light which can help to beat corrosion problems throughout industry. This journal uniquely focuses on these exciting developments to make essential reading for anyone aiming to regain profits lost through corrosion difficulties. • New methods, materials and software • New developments in research and industry • Stainless steels • Protection of structural steelwork • Industry update, conference news, dates and events • Environmental issues • Health & safety, including EC regulations • Corrosion monitoring and plant health assessment • The latest equipment and processes • Corrosion cost and corrosion risk management.