Hardness and wear analysis of Cu/Al2O3 composite for application in EDM electrode

International Conference on Advances in Materials and Manufacturing Applications 2017

Hussain, M.Z.^1 ; Khan, U.^2 ; Jangid, R.^3 ; Khan, S.^1

Depertment of Mechanical Engineering, Jamia Millia Islamia, New Delhi, India^1

Department of Mechanical and Automation Engineering, IGDTUW, New Delhi, India^2

Department of MAE, G.B Pant Engineering College, New Delhi, India^3

关键词: Chemical durability;    Electro discharge machines;    High mechanical strength;    High temperature resistance;    High wear resistance;    Powder metallurgy processing;    Powder metallurgy techniques;    Weight percentages;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/310/1/012044/pdf
DOI  :  10.1088/1757-899X/310/1/012044

来源: IOP

【 摘 要 】

Ceramic materials, like Aluminium Oxide (Al2O3), have high mechanical strength, high wear resistance, high temperature resistance and good chemical durability. Powder metallurgy processing is an adaptable method commonly used to fabricate composites because it is a simple method of composite preparation and has high efficiency in dispersing fine ceramic particles. In this research copper and novel material aluminium oxide/copper (Al2O3/Cu) composite has been fabricated for the application of electrode in Electro-Discharge Machine (EDM) using powder metallurgy technique. Al2O3particles with different weight percentages (0, 1%, 3% and 5%) were reinforced into copper matrix using powder metallurgy technique. The powders were blended and compacted at a load of 100MPa to produce green compacts and sintered at a temperature of 574 °C. The effect of aluminium oxide content on mass density, Rockwell hardness and wear behaviour were investigated. Wear behaviour of the composites was investigated on Die-Sink EDM (Electro-Discharge Machine). It was found that wear rate is highly depending on hardness, mass density and green protective carbonate layer formation at the surface of the composite.