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LASER GLAZING OF Ni-Nb AND Ni-Nb-Cr ALLOYS AND CORROSION RESISTANCE OF AMORPHOUS LAYERS |
YAN Yuhe; YANG Yongqiang; ZhAO Changming (Tianjin Institute of Textile Science and Technology); WU Weitao; WANG Maocai (Institute of Corrosion and Protection of Metals; Academia Sincia); LU Mengfu (Tianjin Institute of Science and Technology) |
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Cite this article:
YAN Yuhe; YANG Yongqiang; ZhAO Changming (Tianjin Institute of Textile Science and Technology); WU Weitao; WANG Maocai (Institute of Corrosion and Protection of Metals; Academia Sincia); LU Mengfu (Tianjin Institute of Science and Technology). LASER GLAZING OF Ni-Nb AND Ni-Nb-Cr ALLOYS AND CORROSION RESISTANCE OF AMORPHOUS LAYERS. Acta Metall Sin, 1992, 28(8): 55-59.
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Abstract Partially amorphous Ni_(60)Nb(40) alloy coatings was made using 1.91 kW cw CO_2 laser melt-quenching, and fully amorphous using 4.5 kW and 4.9 kW. The corro sion resistance of the amorphous layer was improved by adding Cr. Potentiodynamic polarization curves show that Ni_(50)Nb_(40)Cr_(10) is much more corrosion-resistant than stainless steel 18-8.
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Received: 18 August 1992
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1 Beck H, Guentherodt H J. Glassy Metal H: Atomic Structure and Dynamics, Electronic Structure, Magnetic Properties. Berlin: Springer-Verlag, 1983 2 Davis H A. Phy Chem of Glasses, 1976; 17(5) 3 Kaufman E N, Wallance R J. In: Draper C W, Mazzoldi P eds., Laser Surface Treatment of Metals, NATO ASI Series, 1986: 93@ |
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