LASER GLAZING OF Ni-Nb AND Ni-Nb-Cr ALLOYS AND CORROSION RESISTANCE OF AMORPHOUS LAYERS

金属学报(英文版), 1993, 6(7): 52-56.

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 , Tianjin , ChinaWU Weitao WANG Maocai Institute of Corrosion and Protection of Metals , Academia Sinica , Shenyang , ChinaLU Mengfu Tianjin Institute of Science and Technology , Tianjin , China Lecturer , Laser Processing Lab. , Tianjin Institute of Textile Science and Technology , Tianjin 300160 , China

Keywords： Ni-Nb allay , null , null

Partially amorphous Ni-Nb alloy was made by 1.91 kW cw CO_2 laser melt-quenching, and fully amorphous by 4.5 kW and 4.9 kW.The corrosion resistance of the amor- phous layer was improved by adding Cr.Potentiodynamic polarization curves show that the amorphous Ni_(50)Nb_(40)Cr_(10) is in more corrosion-resistant than the amorphous Ni_(60)Nb_(40)and 18-8 stainless steel.

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LASER GLAZING OF Ni-Nb AND Ni-Nb-Cr ALLOYS AND CORROSION RESISTANCE OF AMORPHOUS LAYERS

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