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Hi Diffusion Creep involves the flow of vacancies and interstitials through a crystal under the influence of applied stress. A tensile stress increases the separation of atoms on grain boundaries that are normal to the stress axis, and the Poisson contraction decreases the separation of atoms...

Dear friends I have tried to electroetch 1050 aluminum alloy by 5ml phosphoric acid + 95ml H2o under 1 to 10 volts. However, it was a complete failure even after etching for 6 min. Please help me if you know how to overcome this problem. Thank you very much Best regards