Microstructures and properties of Fe-Co-B-Si-Nb coating prepared by laser cladding and remelting

作者：Zhu, Yanyan; Huang, Jian; Li, Zhuguo^*; Li, Ruifeng

来源：China Welding, 2011, 20(1): 54-58.

• 3.5%Nacl
• Amorphous matrices
• Amorphous metallic coating
• Amorphous phase
• Cladding coatings
• Classification societies
• Energy dispersive spectrometers
• Excellent corrosion resistances
• Fe-based metallic glass
• Grade B
• Hardness test
• Inner layer
• Laser remelting
• Microstructures and properties
• Nanocrystallines
• Powder mixtures
• XRD

High power laser cladding of [(Fe0.5Co0.5)0.75B0.2Si0.05]95.7Nb4.3powder mixture after-remelting was performed to fabricate Fe-based metallic glass coating on the surface of steel of China Classification Society: Grade B (CCS-B). Scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM) with energy dispersive spectrometer (EDS), Vickers hardness tester and corrosion resistance tester were employed to characterize microstructures and evaluate properties of this coating. According to the results of SEM, XRD and TEM, the cladding coating consisted of nanocrystalline embedded in amorphous phase. EDS data indicated that Nb segregated in the amorphous matrix. The results of hardness test revealed that the hardness of the top layer was higher than that of the inner layer of the coating. The coating exhibited excellent corrosion resistance in a 3.5% NaCl solution.

• 出版日期2011
• 单位上海交通大学