Microstructural and mechanical properties of CNT-reinforced ZrO2-Y2O3 coated boiler tube steel T-91

IF 2.9 Q2 ELECTROCHEMISTRY

Journal of Electrochemical Science and Engineering Pub Date : 2022-07-26 DOI:10.5599/jese.1228

Sandeep Kumar, R. Bhatia, Hazoor Singh, Roshan Lal Virdi

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引用次数: 1

Abstract

The main purpose of this study was to fabricate carbon nanotubes (CNTs) reinforced zirconnium yttrium coatings on boiler tube steel and to investigate the microstructural and mechanical properties of these coatings. Plasma sprayed conventional ZrO2-Y2O3, ZrO2-Y2O3 and 1 wt.% CNT and ZrO2-Y2O3 and 4 wt.% CNT were prepared and deposited successfully on boiler tube steel material T-91 (ASTM SA-213) by plasma thermal spray technology. Microhardness, porosity, XRD (X-ray diffraction), SEM/EDAX (scanning electron microscopy/energy dispersive X-ray spectroscopy), X-ray mapping and cross-sectional analyses were used to analyse the specimens. The hardness of CNT reinforced ZrO2-Y2O3 increased with the increase in the percentage of CNT, whereas the porosity of the composite coatings decreased with the increase in the CNT percentage. The observed increase in hardness may be attributed to the content of CNT in the composite coating. The present research gives important information related to the fabrication and physical characteristics of CNT-reinforced ZrO2-Y2O3 coatings deposited on T-91 boiler tube steel.

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cnt增强ZrO2-Y2O3涂层锅炉管钢T-91的组织和力学性能

本研究的主要目的是在锅炉管钢表面制备碳纳米管增强锆钇涂层，并研究涂层的显微组织和力学性能。采用等离子体热喷涂技术，在锅炉管材T-91 (ASTM SA-213)上成功制备了等离子喷涂常规ZrO2-Y2O3、ZrO2-Y2O3和1wt .% CNT、ZrO2-Y2O3和4wt .% CNT。采用显微硬度、孔隙度、XRD (x射线衍射)、SEM/EDAX(扫描电子显微镜/能量色散x射线能谱)、x射线作图和截面分析对试样进行了分析。纳米碳管增强ZrO2-Y2O3复合镀层的硬度随纳米碳管含量的增加而增加，孔隙率随纳米碳管含量的增加而降低。所观察到的硬度的增加可能归因于复合涂层中碳纳米管的含量。本研究为T-91锅炉管钢表面cnt增强ZrO2-Y2O3涂层的制备及其物理特性提供了重要信息。

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

Journal of Electrochemical Science and Engineering ELECTROCHEMISTRY-

CiteScore

3.60

自引率

27.30%

发文量

审稿时长

6 weeks