The Experts below are selected from a list of 237 Experts worldwide ranked by ideXlab platform
E Gileadi - One of the best experts on this subject based on the ideXlab platform.
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electrodeposition of rhenium Nickel Alloys from aqueous solutions
Electrochimica Acta, 2009Co-Authors: A Naor, Noam Eliaz, E GileadiAbstract:Abstract Rhenium–Nickel Alloys were deposited on copper substrates in a small three-electrode cell, under galvanostatic conditions. The bath solution consisted of ammonium perrhenate, citric acid and Nickel sulfamate. The effects of bath composition and deposition time were studied. The Faradaic efficiency (FE) and partial deposition current densities were calculated based on mass gain and elemental analysis using energy dispersive spectroscopy. The surface morphology was characterized by scanning electron microscopy. The thickness of the coating was measured on metallographic cross-sections. The results are discussed with emphasis on routes to increase the Faradaic efficiency and rhenium content in the coating. A plausible mechanism for the electrodeposition of rhenium–Nickel Alloys is presented.
A Naor - One of the best experts on this subject based on the ideXlab platform.
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electrodeposition of rhenium Nickel Alloys from aqueous solutions
Electrochimica Acta, 2009Co-Authors: A Naor, Noam Eliaz, E GileadiAbstract:Abstract Rhenium–Nickel Alloys were deposited on copper substrates in a small three-electrode cell, under galvanostatic conditions. The bath solution consisted of ammonium perrhenate, citric acid and Nickel sulfamate. The effects of bath composition and deposition time were studied. The Faradaic efficiency (FE) and partial deposition current densities were calculated based on mass gain and elemental analysis using energy dispersive spectroscopy. The surface morphology was characterized by scanning electron microscopy. The thickness of the coating was measured on metallographic cross-sections. The results are discussed with emphasis on routes to increase the Faradaic efficiency and rhenium content in the coating. A plausible mechanism for the electrodeposition of rhenium–Nickel Alloys is presented.
Tugrul Ozel - One of the best experts on this subject based on the ideXlab platform.
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machining induced surface integrity in titanium and Nickel Alloys a review
International Journal of Machine Tools & Manufacture, 2011Co-Authors: Durul Ulutan, Tugrul OzelAbstract:Abstract Titanium and Nickel Alloys represent a significant metal portion of the aircraft structural and engine components. When these critical structural components in aerospace industry are manufactured with the objective to reach high reliability levels, surface integrity is one of the most relevant parameters used for evaluating the quality of finish machined surfaces. The residual stresses and surface alteration (white etch layer and depth of work hardening) induced by machining of titanium Alloys and Nickel-based Alloys are very critical due to safety and sustainability concerns. This review paper provides an overview of machining induced surface integrity in titanium and Nickel Alloys. There are many different types of surface integrity problems reported in literature, and among these, residual stresses, white layer and work hardening layers, as well as microstructural alterations can be studied in order to improve surface qualities of end products. Many parameters affect the surface quality of workpieces, and cutting speed, feed rate, depth of cut, tool geometry and preparation, tool wear, and workpiece properties are among the most important ones worth to investigate. Experimental and empirical studies as well as analytical and Finite Element modeling based approaches are offered in order to better understand machining induced surface integrity. In the current state-of-the-art however, a comprehensive and systematic modeling approach based on the process physics and applicable to the industrial processes is still missing. It is concluded that further modeling studies are needed to create predictive physics-based models that is in good agreement with reliable experiments, while explaining the effects of many parameters, for machining of titanium Alloys and Nickel-based Alloys.
Noam Eliaz - One of the best experts on this subject based on the ideXlab platform.
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electrodeposition of rhenium Nickel Alloys from aqueous solutions
Electrochimica Acta, 2009Co-Authors: A Naor, Noam Eliaz, E GileadiAbstract:Abstract Rhenium–Nickel Alloys were deposited on copper substrates in a small three-electrode cell, under galvanostatic conditions. The bath solution consisted of ammonium perrhenate, citric acid and Nickel sulfamate. The effects of bath composition and deposition time were studied. The Faradaic efficiency (FE) and partial deposition current densities were calculated based on mass gain and elemental analysis using energy dispersive spectroscopy. The surface morphology was characterized by scanning electron microscopy. The thickness of the coating was measured on metallographic cross-sections. The results are discussed with emphasis on routes to increase the Faradaic efficiency and rhenium content in the coating. A plausible mechanism for the electrodeposition of rhenium–Nickel Alloys is presented.
Durul Ulutan - One of the best experts on this subject based on the ideXlab platform.
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machining induced surface integrity in titanium and Nickel Alloys a review
International Journal of Machine Tools & Manufacture, 2011Co-Authors: Durul Ulutan, Tugrul OzelAbstract:Abstract Titanium and Nickel Alloys represent a significant metal portion of the aircraft structural and engine components. When these critical structural components in aerospace industry are manufactured with the objective to reach high reliability levels, surface integrity is one of the most relevant parameters used for evaluating the quality of finish machined surfaces. The residual stresses and surface alteration (white etch layer and depth of work hardening) induced by machining of titanium Alloys and Nickel-based Alloys are very critical due to safety and sustainability concerns. This review paper provides an overview of machining induced surface integrity in titanium and Nickel Alloys. There are many different types of surface integrity problems reported in literature, and among these, residual stresses, white layer and work hardening layers, as well as microstructural alterations can be studied in order to improve surface qualities of end products. Many parameters affect the surface quality of workpieces, and cutting speed, feed rate, depth of cut, tool geometry and preparation, tool wear, and workpiece properties are among the most important ones worth to investigate. Experimental and empirical studies as well as analytical and Finite Element modeling based approaches are offered in order to better understand machining induced surface integrity. In the current state-of-the-art however, a comprehensive and systematic modeling approach based on the process physics and applicable to the industrial processes is still missing. It is concluded that further modeling studies are needed to create predictive physics-based models that is in good agreement with reliable experiments, while explaining the effects of many parameters, for machining of titanium Alloys and Nickel-based Alloys.