Effect of Sc Element on the Mechanical Properties and Sulfurization Resistance of Ag-Ni Alloy AITranslate

Basic Information:

DOI：

Chinese Library Classification Number:TG146.32[金属学及工艺—金属材料]

Citation Information:

Ag-Ni-Sc series alloys were prepared by vacuum induction smelting furnace.The corrosion beha-vior of these series of alloys in 0.1 mol/L Na₂S solution and H₂S atmosphere was studied by immersion corrosion and electrochemical tests.And the effects of Sc addition on the corrosion morphology,components of the corrosion products,microstructure,and mechanical properties of Ag-Ni alloys were investigated by SEM,EDS,OM,and hardness tests.The results show that the moderate addition of Sc can reduce the corrosion current of the alloy,improve the sulfuration resistance of the alloy,refine the grains of the alloy,and thus enhance the hardness of the alloy.However,excessive Sc content will lead to excess amount of intermetallic compounds and grain boundary segregation in the alloy microstructure,deteriorating the hardness and sulfuration resistance of the alloy.Taking all factors into consideration,the optimum addition of Sc in Ag-Ni alloys is 0.15%.