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Preparation and characterization of Ni-Al-Cr3C2 coating
Du, L. Z.; Zhang, W. G.; Zhang, D. J.; Li, B. H.
Conference Name5th International Conference on Surface Engineering
Source PublicationKEY ENGINEERING MATERIALS Volume: 373-374 Pages: 15-18
Conference DateJUL 07-10, 2007
Conference PlaceDalian Univ Technol, Dalian, PEOPLES R CHINA
PublisherTrans Tech Publications Ltd
AbstractIn order to improve the surface properties of the machine parts, the NiAl cladding Cr3C2 powder were flame and plasma sprayed. The morphology, microstructure, composition and wear properties of the coatings were examined. The results show that due to the exothermal reaction of the Ni and Al elements, the bonding strength of the coatings are improved, and the main compositions of the coatings are Ni3Al inter-metallic compound and Cr3C2. The flame sprayed and plasma sprayed coatings show almost the same micro-hardness and friction coefficient. But the microstructure of the plasma sprayed coating is more compact than that of the frame sprayed one and the wear resistance of the flame and sprayed coatings is 30% and 120% higher than that of the 1045 steel, respectively. The main wear mechanisms of the coatings are plastic deformation and spallation, and the high bonding strength and the uniformly distributed Cr3C2 particles play important anti-wear roles.
KeywordFlame Spray Plasma Spray Tribological Properties Ni3al Intermetallic Compound Alloy Coatings Parameters Behavior
Indexed ByISTP
Document Type会议论文
Recommended Citation
GB/T 7714
Du, L. Z.,Zhang, W. G.,Zhang, D. J.,et al. Preparation and characterization of Ni-Al-Cr3C2 coating[C]:Trans Tech Publications Ltd,2008:15-18.
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