EFFECTS OF COPPER ELECTROPLATING PARAMETERS ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Al-Cu BRAZED JOINTS

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Ayse_Ozdemir_Msc_Thesis_Study.pdf

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2022-12-02

Author

Özdemir, Ayşe

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Almost 25, 50 and 75 microns of copper were deposited on aluminum alloys by using copper sulfate and copper pyrophosphate baths. And also, 20, 40 and 60 mA/cm2 current density were applied during electroplating process. After electroplating process, copper deposited aluminum pieces were brazed at 570℃ for 15 minutes by using furnace brazing in the first part of study. Shear test were applied to samples and strength of the joint which was brazed with sample that had 75 microns thickness coated at 60 mA/cm2 current density was measured higher than the others. Electroplating parameters of the highest shear strength sample in the first part were used in the second part. 560℃, 570℃ and 580℃ were used as brazing temperature and brazing process was performed for 5 and 15 minutes. It was observed that shear strength of joint was affected from changing brazing temperature and time and the highest shear strength was measured as 3302 N. This sample was brazed at 580℃ for 15 minutes.

Subject Keywords

Brazing, Electroplating, Copper, Aluminum, Current density

URI

https://hdl.handle.net/11511/101283

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

A. Özdemir, “EFFECTS OF COPPER ELECTROPLATING PARAMETERS ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Al-Cu BRAZED JOINTS,” M.S. - Master of Science, Middle East Technical University, 2022.