Chinese Journal of Lasers, Volume. 42, Issue 3, 306006(2015)
Influence of Ni Additions on the Microstructures and Properties of Laser Clad CuAl10 Coatings
To further improve the corrosion resistance performance of CuAl10 alloy laser cladding coating, the influence of Ni additions on the microstructures and properties of CuAl10 coatings produced by laser cladding is investigated. Laser cladding is performed on 316L stainless steel surface by a HPDL-D30 diode laser with direct injection powders. Laser cladding coatings are characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and microhardness tester. The electrochemical corrosion behavior of cladding layers is evaluated. The results show that the coating have an excellent metallurgical bonding with the substrate and homogeneous microstructure. The addition of Ni element can significantly improve the corrosion resistance performance of laser cladding coatings. The corrosion resistance of claddings increase with increasing the mass fraction of Ni, reaching a maximum at 6.0%. The cladding without Ni mainly consists of α - Cu, α - Fe, AlFe3 and Cu9Al4, while the addition of Ni element cladding mainly consists of α - Cu, α - (Cu,Ni), AlCu3 and Cu9Al4.
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Yang Jiaoxi, Wen Qiang, Li Ziyang, Xiao Zhiyong. Influence of Ni Additions on the Microstructures and Properties of Laser Clad CuAl10 Coatings[J]. Chinese Journal of Lasers, 2015, 42(3): 306006
Category: materials and thin films
Received: Oct. 29, 2014
Accepted: --
Published Online: Feb. 5, 2015
The Author Email: Jiaoxi Yang (yangjiaoxi@bjut.edu.cn)