Influence of Silica Rich CRT and BN on Mechanical, Wear and Corrosion Characteristics of Copper- Surface Composite Proce
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ORIGINAL PAPER
Influence of Silica Rich CRT and BN on Mechanical, Wear and Corrosion Characteristics of Copper- Surface Composite Processed Through Friction Stir Processing Gopal P.M. 1 & Kavimani V. 1 Received: 8 July 2020 / Accepted: 6 October 2020 # Springer Nature B.V. 2020
Abstract The center of attention of current research lies on utilizing E-waste cathode ray tube (CRT) glass as reinforcement to develop copper hybrid surface composites through friction stir processing route. Pure copper is taken as base material which is reinforced with different volume % of CRT glass (5, 10 & 15) and fixed amount (2%) of BN. The particle size of the reinforced CRT and BN particles are 30 µm and 10 µm respectively. The developed surface composite was characterized for microstructure through optical microscope and scanning electron microscope, density, micro hardness, tensile properties and wears behavior. The analysis confirms the presence of reinforcements in the matrix and also evidence for recrystallization. Density of the MMC is found decreasing while the hardness increases with addition of CRT & BN. The tensile and yield strength of unprocessed Cu is superior to that of MMC whereas it enhanced with raise in reinforcement content. Wear resistance of Cu depicts incremental trend with respect to reinforcement’s addition. Scanning electron microscope was used to understand the worn out surface morphology and wear mechanism. Corrosion results depict that increase in CRT addition decrease the corrosion current density of surface composite. Keywords Copper . CRT glass . Boron Nitride . Mechanical Properties . Microstructure . Wear
1 Introduction Technological growth in every industry leads to high necessity for high performance materials with multifunctional properties. The Engineering materials that are mostly used in this day and age such as aluminium, copper, magnesium and its alloys have become inept to meet the necessities of modern applications. Since, these materials have only superior numbers in one or two properties it is not sufficient [1, 2]. For example, aluminium and magnesium has high strength to weight ratio but lags in their wear properties as they wornout quickly in sliding environments. To overcome these property lags of current engineering materials, hard reinforcements
* Gopal P.M. [email protected] Kavimani V. [email protected] 1
Department of Mechanical Engineering, Karpagam Academy of Higher Education, Coimbatore 641 021, India
usually ceramics were added and are called as metal matrix composites (MMC) [3, 4]. The evolution of MMC in this era as potential material for engineering application is remarkable as these MMCs meets the most of the requirements of modern applications such as high strength, toughness, wear and corrosion resistance. Generally, aluminum, magnesium and copper based materials are used as continuous matrix phase while the mostly used discontinuous reinforcement phases are hard ceramics and soft solid lubricants. MMCs with copper as base material is found as minimal when
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