Effect of liquid-phase sintering as a means of quality enhancement of pseudoalloys based on copper

International Conference on Information Technologies in Business and Industry 2016

计算机科学;经济学;工业技术

Gordeev, Yu.I.^1 ; Abkaryan, A.K.^1 ; Zeer, G.M.^1 ; Lepeshev, A.A.^2 ; Zelenkova, E.G.^1

Siberian Federal University (SFU), Krasnoyarsk, Russia^1

Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russia^2

关键词: Electroerosion;    Experimental conditions;    Fine microstructure;    Gradient composites;    Metal binders;    Microstructure and properties;    Quality enhancement;    Self-Diffusion;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/803/1/012050/pdf
DOI  :  10.1088/1742-6596/803/1/012050

来源: IOP

【 摘 要 】

The effects of the liquid phase of a metal binder on the microstructure and properties of self-diffusion gradient composite (Cu - Al - ZnO) were investigated. For the compositions considered, it was revealed that at the temperature of about 550 C, a liquid phase binder forms from nanoparticles Cu - Al. Applying a proper amount of a (Cu - Al) binder appeared to be beneficial for fabricating gradient composites with the desired self-diffusion process. It is also favorable for mass transfer of additives nanoparticles into the volume of a matrix during sintering and for the desired fine microstructure and mechanical properties. For the experimental conditions considered in this study, the best mechanical properties can be obtained when 6 mass % (Cu - Al) of ligature were used, which gave hardness HB at 120, electroerosion wear - 0.092 • 10-6 g / cycle, resistivity - 0.025 mcOm.