J Mater Sci Technol ›› 1998, Vol. 14 ›› Issue (1): 49-52.

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Microstructure of Laser Remelted Ni-base Alloy Coating on Stainless Steel

Yang GAO (Beijing Institute of Aeronautical Material, Beijing 100095, China)Yong LIANG and Changxu SHI (Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China)   

  • Received:1998-01-28 Revised:1998-01-28 Online:1998-01-28 Published:2009-10-10

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Abstract: A 5 kW CW CO2 gas laser was used to produce NiCrBSi superalloy coatings. Powders were preplaced by plasma-spraying. The microstructure and chemical composition of the coating have been studied by SEM, XRD and HREM. The results show the coating microstructure is fine dendrites, composed of γ matrix, γ' and boride (NiB) eutectic, the lattice parameter of the γ matrix is 0.3572 nm and there is a metallurgical bonding in interface.

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