Alumo Matrix Composite Materials for Electro Spark Deposition on Carbon Steel

Abstract:

The article presents the research results on the problem of the influence of the electric spark discharge parameters and electrode alloys, based on metal matrix materials, used for electro spark deposition (ESD) on the physicochemical and operational characteristics of the coating layer. Experimental dependences of the cathode weight gain, erosion resistance of the anode materials, mass transfer coefficient, wear resistance of the coating, and their mathematical expressions with a reliability criterion of at least R²> 0.9044, are obtained. It is established that, after steel 45 sample has been treated by ESD with metal-matrix materials, the hardness of its surface increases 6 times on the average and the wear resistance – 2 times. The best values of wear resistance at all the modes under investigation have been obtained for the anode material NiO-Zr-TiO₂-Al. Data series of cathode weight gain (ƩΔ_c), erosion resistance of anode materials (ƩΔа), mass transfer coefficient Кmt, coating wear resistance after ESD (Ʃ_cwr), coating formation efficiency (γ_cfe), ESD energy efficiency (γ_eef), are also obtained. These data can be recommended for achieving the required parameters of the ESD on steels using metal-matrix materials.

• Periodical: Solid State Phenomena (Volume 316)
• Pages: 745-751
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.316.745
• Online since: April 2021
• Authors: Sergey V. Nikolenko*, Sergey N. Khimukhin, P.S. Gordienko
• Keywords: Coating, Electro Spark Deposition, Electrode Metal Matrix Materials, Micro-Abrasive Wearing

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