Corrosion Behavior in a Neutral Artificial Saliva of Several Binary Co-Cr Alloys with Various Chromium Contents

Kretz, Estelle; Berthod, Patrice; Schweitzer, Thierry

doi:10.21767/2576-392x.100021

Cited by 6 publications

(2 citation statements)

References 12 publications

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“…High electrical and thermal conductivity, good strength, high ductility, and suitable corrosion resistance are the main features of Chromium. Hence, Cu-Cr alloys kept their strength conductivity at elevated temperatures and they have high electrical and thermal conductivity, high corrosion resistance, and good plasticity [5][6][7][8]. These noble properties lead to a wide range of applications of Cu-Cr alloys in separators [9], catalysts [10], electrodes [11], etc.…”

Section: Instructionmentioning

confidence: 99%

Optimizing of micro-hardness of nanostructured Cu–Cr solid solution produced by mechanical alloying using ANN and genetic algorithm

et al. 2020

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In this study, a feed-forward back-propagation artificial neural network (ANN) was designed for the predicting of the micro-hardness of nano-sized Cu-Cr solid solution. The network with 10 and 18 neurons in the first and second hidden layers, respectively, was created based on the 36 extracted data (7 variables and 36 datasets) from a similar study. Then, the genetic algorithm of the effective parameters of mechanical alloying was developed to specify the maximum hardness of Cu-Cr alloys. Consequently, the milling process was performed to validate the created network according to the obtained factors in the genetic algorithm. For this purpose, mechanical alloying was carried out by ball milling of the Cu-Cr powders at 3 and 4.5 weight percentages, respectively. The ball-to-powder weight ratio was kept at 15:1 in the Ar atmosphere and the milling times for Cu-3wt%Cr and Cu-4.5wt%Cr were 48 and 63 h, respectively. Produced powders were studied by scanning electron microscope (SEM) and X-ray diffraction (XRD). Lattice strain, crystallite size, and internal strain were calculated by Rietveld refinement, using the Maud software. Next, the produced powders compressed via a cold press and annealed at 601 °C. The micro-hardness for the Cu-3wt%Cr and Cu-4.5wt%Cr were 228 and 255 Vickers, respectively, while the predicted micro-hardness by the artificial neural network and genetic algorithm were 237 and 243 Vickers, respectively. The root mean square error was 4.25% in the regression of 0.99063 at the proposed sintering temperature. Finally, the result of the sensitivity analysis shows that the milling time, percentage of Cr, and annealing temperature had the highest impact on the micro-hardness of the products.

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Section: Instructionmentioning

confidence: 99%

Optimizing of micro-hardness of nanostructured Cu–Cr solid solution produced by mechanical alloying using ANN and genetic algorithm

et al. 2020

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“…The wide popularity of such alloys is explained by a superior combination of the useful properties, such as fracture toughness, strength, excellent wear resistances, good bond with ceramics and the quality/price ratio [3,4]. These alloys are also characterized by excellent corrosion resistance [5,6]. The bulk microstructure of Co-Cr alloys is well documented.…”

Section: Introductionmentioning

confidence: 99%

Surface composition of the Co-Cr based alloys after different lab denture treatments using auger electron spectroscopy

2019

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Метою даної роботи є аналіз хімічного складу поверхні сплаву на основі Co-Cr після декількох технологічних процедур, прийнятих у стоматологічній практиці за допомогою оже-електронної спектроскопії (ОЕС). Цей аналіз проводили після відливання зразків сплавів піддавали наступним послідовним обробкам: розрізанням на алмазному колесі, електроіскровим різанням і шліфуванням, електрополірування, витримки в штучній слині 2 дні після електрополірування Ключові слова: обробка поверхні, стоматологічні сплави на основі Со-Cr, оже-електронна спектроскопія, штучна слина

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Electrochemical corrosion behaviour of Co–Cr–Mo–W alloy and its surface anodic oxide film in artificial saliva

MOGODA,

TAMMAM

2024

Bull Mater Sci

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Corrosion Behavior in a Neutral Artificial Saliva of Several Binary Co-Cr Alloys with Various Chromium Contents

Cited by 6 publications

References 12 publications

Optimizing of micro-hardness of nanostructured Cu–Cr solid solution produced by mechanical alloying using ANN and genetic algorithm

Optimizing of micro-hardness of nanostructured Cu–Cr solid solution produced by mechanical alloying using ANN and genetic algorithm

Surface composition of the Co-Cr based alloys after different lab denture treatments using auger electron spectroscopy

Electrochemical corrosion behaviour of Co–Cr–Mo–W alloy and its surface anodic oxide film in artificial saliva

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