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首页> 外文期刊>Journal of Materials Engineering and Performance >Comparative Characteristic and Erosion Behavior of NiCr Coatings Deposited by Various High-Velocity Oxyfuel Spray Processes
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Comparative Characteristic and Erosion Behavior of NiCr Coatings Deposited by Various High-Velocity Oxyfuel Spray Processes

机译：各种高速含氧燃料喷涂工艺沉积的NiCr涂层的比较特性和冲蚀行为

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摘要

The purpose of this study is to analyze and compare the mechanical properties and microstructure details at the interface of high-velocity oxyfuel (HVOF)-sprayed NiCr-coated boiler tube steels, namely ASTM-SA-210 grade Al, ASTM-SA213-T-11, and ASTM-SA213-T-22. Coatings were developed by two different techniques, and in these techniques liquefied petroleum gas was used as the fuel gas. First, the coatings were characterized by metallographic, scanning electron microscopy/energy-dispersive x-ray analysis, x-ray diffraction, surface roughness, and microhardness, and then were subjected to erosion testing. An attempt has been made to describe the transformations taking place during thermal spraying. It is concluded that the HVOF wire spraying process offers a technically viable and cost-effective alternative to HVOF powder spraying process for applications in an energy generation power plant with a point view of life enhancement and to minimize the tube failures because it gives a coating having better resistance to erosion.
机译：这项研究的目的是分析和比较在高速含氧燃料（HVOF）喷涂的NiCr涂层锅炉管钢（即ASTM-SA-210级Al，ASTM-SA213-T）的界面处的力学性能和微观结构细节-11和ASTM-SA213-T-22。涂层是通过两种不同的技术开发的，在这些技术中，液化石油气被用作燃料气。首先，通过金相，扫描电子显微镜/能量分散X射线分析，X射线衍射，表面粗糙度和显微硬度对涂层进行表征，然后进行腐蚀测试。已经尝试描述在热喷涂期间发生的转变。结论是，从提高使用寿命的观点出发，HVOF钢丝喷涂工艺为HVOF粉末喷涂工艺提供了一种技术上可行且具有成本效益的替代方法，因为该工艺可以提高寿命并最大程度地减少管子故障，因为它使涂料具有更好的抗腐蚀能力。

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