The Structures and High Temperature Properties of FeMnCrNiAl/Cr₃C₂ Composite Coatings by High Velocity Arc Spraying

Abstract:

The FeMnCrNi/Cr₃C₂ inter metallic composite coatings are prepared by high velocity arc spraying (HVAS) technology on 20G steel. The properties, such as the microstructure, micro hardness, binding strength, high temperature oxidation, thermal shock resistance, and erosion in high temperature, are studied based on methods such as analysis of optical microscope, micro hardness, field emission scanning electron microscope (FESEM), and spectrum analysis. The result shows that FeMnCrNiAl/Cr₃ C₂ coatings, compared with 20G steel substrate, present higher micro hardness, binding strength and more excellent high temperature properties, which will be improved if added with rare-earth Alloy.

• Periodical: Applied Mechanics and Materials (Volumes 130-134)
• Pages: 1532-1538
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.130-134.1532
• Online since: October 2011
• Authors: Yong Jun Chao, Jun Jie Weng, Shao Guang Liu, Jian Li, Jin Peng Sang
• Keywords: Compound Coating, High Speed Arc Spraying, High Temperature Properties, Inter-Metallic Composites

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