The High Energy Ball Milling Of Copper Alloy And Corrosion

Copper has a higher thermodynamic stability. There will be no role of hydrogen depolarization and was listed as one of corrosion-resistant metal. However, high humidity, corrosive media (such as sulfur dioxide with air, oxygen-containing water, acid and oxidative containing CN-, NH4+, etc. To form a complex with copper ions in the liquid), the occurrence of copper is more serious corrosion. And copper alloy showed a higher than the corrosion resistance of pure copper.The thesis define the parameters of preparation of copper alloy by high-energy ball milling of copper metal powder, such as the additive and its dosage, milling speed, milling time. Then in accordance with the copper alloy powder grinding as particle size, bulk density, its appearance by SEM analysis gradually arrive at some better abrasive powder copper alloy sheet parameters of the basic:speed milling at 1000/800r.min alternating every sixty seconds once,200r.min speed in the final two minutes; milling time for sixty minutes; Ball material proportion metal alloy powder: ball=1:20; aids for 1.5g of auxiliaries No.A4, grinding of the copper-zinc alloy powder Bulk proportion of 1.46g/cm3, Grain size is 8.09μm better. the morphology of the copper-zinc alloy grinding very attractive uniform rules by SEM; From XRD we have seen the formation of alloy, so the preparation of high-energy ball milling Cu-Zn-Al alloy is totally feasible.Then with oxidation of copper for corrosion detection methods and choosing a comparative analysis of systems theory; We can get the sheet of good Cu-Zn-Al alloy grinding process parameters By chemical titration analysis and comparison trial in which Cu-Zn-Al alloy; We can clear that after grinding to add No.B powder prepared by Cu-Zn-Al alloy grinding aids than No.A oxidation of the alloy corrosion resistance much stronger, and the corrosion test prepared by the No.B abrasive powder Cu-Zn-Al alloy is not after grinding the pure copper powder antioxidant 20 times more corrosion. At the same time as the Cu-Zn-Al alloy grinding No.B, with the test of time in the extension of anti-oxidation corrosion further strengthened in the anti-oxidation corrosion test, this may be the formation of oxide film that can be oxide further corrosion. Researching papers show that the final zinc-aluminum alloy with copper and zinc ratio of 1:6, with the total amount of the increase in zinc aluminum oxide corrosion resistance getting stronger and stronger, but other properties (such as electrical conductivity) decreased; At the same time their coating of particles'surface is very good by EDS and XPS.The corrosion antioxidant of Cu-Zn-Al alloy Preparation form anti-oxidation high-energy ball milling is very good, there is a very broad market prospects. Particularly, it has important significance for conservation of resources our country.