Flexural and corrosion behaviour of WC-10Co-4Cr + Graphene sprayed on textured HSLA-steel

IF 2.4 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Surface Engineering Pub Date : 2023-04-03 DOI:10.1080/02670844.2023.2232970

Shreyansh Shrivastava, Vijay Kumar, R. Verma, Varun Sharma

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引用次数: 2

Abstract

ABSTRACT The aim of this work was to investigate the flexural strength and corrosion behaviour of graphene-reinforced WC-10Co-4Cr HVOF coating on sandblasted and laser-textured DH-36 naval-grade steel. In this regard, WC-10Co-4Cr and WC-10Co-4Cr + 3% graphene nanoparticles (GNPs) are applied on DH-36 substrates using the HVOF coating technique and their microhardness, flexural strength and corrosion behaviour are investigated. Amongst all, the flexural strength of WC-10Co-4Cr + 3%GNPs coating on laser-textured sample with pitch-to-diameter (p/d) ratio 2 was minimum (327.006 MPa) due to the effect of GNPs and better mechanical interlocking at the coating-substrate interface. Also, the corrosion resistance of coated DH-36 steel was evaluated by salt spray test; it revealed that corrosion resistance was improved with the application of WC-10Co-4Cr coating, which was further enhanced by the addition of GNPs as GNP has the property of being impermeable to gasses and salts. Further, microstructures and morphologies of the corroded surface were investigated using FE-SEM images.

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WC-10Co-4Cr +石墨烯喷涂在织构高速钢上的弯曲和腐蚀行为

摘要:本研究的目的是研究石墨烯增强WC-10Co-4Cr HVOF涂层在喷砂和激光织构的DH-36海军级钢上的弯曲强度和腐蚀行为。为此，采用HVOF涂层技术将WC-10Co-4Cr和WC-10Co-4Cr + 3%石墨烯纳米颗粒(GNPs)涂在DH-36基板上，研究了它们的显微硬度、抗弯强度和腐蚀行为。其中，WC-10Co-4Cr + 3%GNPs涂层在p/d比为2的激光织形试样上的抗弯强度最小(327.006 MPa)，这主要是由于GNPs的作用以及涂层与基体界面较好的机械联锁作用。采用盐雾试验对涂覆DH-36钢的耐蚀性进行了评价;结果表明，WC-10Co-4Cr涂层提高了涂层的耐蚀性，而GNPs的加入则进一步提高了涂层的耐蚀性，因为GNP具有不渗透气体和盐的特性。此外，利用FE-SEM图像研究了腐蚀表面的微观组织和形貌。

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

Surface Engineering 工程技术-材料科学：膜

CiteScore

5.60

自引率

14.30%

发文量

审稿时长

2.3 months

期刊介绍： Surface Engineering provides a forum for the publication of refereed material on both the theory and practice of this important enabling technology, embracing science, technology and engineering. Coverage includes design, surface modification technologies and process control, and the characterisation and properties of the final system or component, including quality control and non-destructive examination.