Experimental investigation and optimization of pulse electrodeposition parameters for Ni-TiO2 coating on Inconel 617 using TOPSIS technique
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초록
The quality of nano coating and its strength are purely influenced by deposition parameters. Pulse electrodeposition is apromising technique for material coating. Inconel 617 is a widely used alloy in high temperature and aerospace applications. Considering wide range of its applications, study of micro hardness and surface roughness of Inconel 617 is essential. Thisresearch deals with optimization of coating parameters in pulse electrodeposition of Ni-TiO2 on Inconel 617. Both, single andmulti-objective optimization techniques are selected, with input design of L9 orthogonal array. Pulse frequency, duty cycle andcurrent density are the input parameters. Micro hardness and surface roughness were determined from Coated Inconel 617. TOPSIS technique is adopted to improve micro hardness and surface roughness. Based on the experimental results, Microhardness of 474 Hv and surface roughness of 0.412 μm are achieved with remarkable improvement in closeness coefficientvalue from 0.4475 to 0.913. SEM analysis is carried out to ensure the surface quality. Moreover EDAX and XRD test to identifythe presence of coating material.
Abstract
The quality of nano coating and its strength are purely influenced by deposition parameters. Pulse electrodeposition is apromising technique for material coating. Inconel 617 is a widely used alloy in high temperature and aerospace applications. Considering wide range of its applications, study of micro hardness and surface roughness of Inconel 617 is essential. Thisresearch deals with optimization of coating parameters in pulse electrodeposition of Ni-TiO2 on Inconel 617. Both, single andmulti-objective optimization techniques are selected, with input design of L9 orthogonal array. Pulse frequency, duty cycle andcurrent density are the input parameters. Micro hardness and surface roughness were determined from Coated Inconel 617. TOPSIS technique is adopted to improve micro hardness and surface roughness. Based on the experimental results, Microhardness of 474 Hv and surface roughness of 0.412 μm are achieved with remarkable improvement in closeness coefficientvalue from 0.4475 to 0.913. SEM analysis is carried out to ensure the surface quality. Moreover EDAX and XRD test to identifythe presence of coating material.
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