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Enhancing the Mechanical Properties of Copper with WC Coating through Electro-Spark Deposition (ESD)

عنوان مقاله: Enhancing the Mechanical Properties of Copper with WC Coating through Electro-Spark Deposition (ESD)
شناسه ملی مقاله: IMES12_004
منتشر شده در هفتمین کنفرانس بین المللی مهندسی مواد و متالورژی و دوازدهمین همایش ملی مشترک انجمن مهندسی متالورژی و مواد ایران و انجمن ریخته گری ایران در سال 1397
مشخصات نویسندگان مقاله:

Arvin Taghizadeh Tabrizi - PhD Student of Materials Engineering, Materials Engineering Department, University of Tabriz, Tabriz, Iran
Hossein Aghajani - Associate Professor of Materials Engineering Department, University of Tabriz, Tabriz, Iran
Zahra Fartash Karkaj - B. Sc. Graduated of Materials Engineering, Materials Engineering Department, University of Tabriz, Tabriz, Iran
Zhila Dehgan Shahrak - B. Sc. Graduated of Materials Engineering, Materials Engineering Department, University of Tabriz, Tabriz, Iran

خلاصه مقاله:
Ceramic coatings are able to increase the hardness and tribological properties of any substrates especially soft metallic substrates. Copper is used in electrode of Resistance Spot Welding (RSW) and due to its intrinsic properties, it has low mechanical properties. Tungsten Carbide coatings applied to copper electrode by Electro Spark Deposition (ESD) process. The obtained coat was evaluated and the consequent increase in hardness of the copper substrate measured by micro Vickers hardness tester. The maximum hardness was obtained at 50 current and 10 kHz frequency. Results show that with increasing the frequency and current, hardness value is increased. Microstructure evolution of the coating and substrate/coating interface investigated through Scanning Electron Microscope (SEM). The SEM image showed rough surface of the coating. There was mutual elemental diffusion in the substrate/coating interface. There was not any major segregation in the interface.

کلمات کلیدی:
Ceramic coatings, WC, Tribological properties, Electro Spark Deposition (ESD)

صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/841764/