Experimental Study On The Copper Fe-aluminizing

With high-conductivity,high-scalability,high-durability and high- machinability,copper is widely used in the automotive, electrical, electr- onics, electrical appliances and meters, chemicals, metallurgy, machinery, and other industry sectors.In this paper, Al- Fe multi-element penetration has been carried on copper with the method of solid-proliferation. Thermodynamic analysis and study is conducted in the process of co-penetration. The layer micro- structure ,organizations and diffusion mechanism were investigated in details. Thermodynamics and kinetics of oxidation are studied on copper and penetrated copper.The results show that the temperature jumps twice at 400 and 500 degree Celsius in the process of penetration.The expected ratio of the materials,the furnace temperature holding time,the heating rate can to a certain extent impact the heating curve of the penetration tank and the layer thickness.After the process of multi-penetration,a layer is generated on the copper surface.This layer is composed of attachment layer,diffusi- on layer and fusion layer,the layer organization containsα,β,γand I phase.The penetrated copper has better anti-oxidation ability than the non-penetrated copper at the temperature 300 degree Celsius,but has worse anti-oxidation ability at the temperature 400 and 500 degree Celsius.The corrosion ability of the penetrated copper is worse than the non-penetrated copper in 22%HCl and 45% H2SO4 and is better in 3.5% NaCl at room temperature.The average prescription relative error of the temperature data of penetration process is about 20% between the calculative results and the the experimental results,and the correlation coefficient are all above 0.95.