Functional Properties of Fe−Mo and Fe−Mo−W Galvanic Alloys

Ved, Maryna; Сахненко, Н. Д.; Karakurkchi, Ann; Ermolenko, I. Yu.; Fomina, L. P.

doi:10.1007/s11003-016-9893-5

Cited by 23 publications

(13 citation statements)

References 6 publications

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“…Electrochemical technologies are widely employed for the modification of surfaces of metals and alloys by forming coatings with different compositions and purposes [4,9,10].…”

Section: Features Of Peo Treatment Aluminum Andmentioning

confidence: 99%

Features of Plasma Electrolytic Formation of Manganese- and Cobalt-Containing Composites on Aluminum Alloys

Karakurkchi

Сахненко

Ved

et al. 2019

Advances in Materials Science and Engineering

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is paper presents the results of studies on the electrochemical treatment characteristics of aluminum and alloys in alkaline electrolytes. It is shown that the heterogeneity of the alloys composition complicates the formation of the surface oxide layer. To homogenize the treated surface and obtain oxide coatings doped with manganese and cobalt, electrolytes based on KOH and K 4 P 2 O 7 with the addition of KMnO 4 and CoSO 4 were used. Plasma electrolytic oxidizing (PEO) in these electrolytes in the range of current densities 5-20 A/dm 2 allows to obtain mixed oxide coatings which contained both aluminum oxide matrix and doping metal oxides Al 2 O 3 ·MnO x and Al 2 O 3 ·CoO y . It is shown that an increase in the PEO current density and the concentration of manganate-and cobalt(II) ions in the solution leads to an increase the content of dopant metals in the coatings outer layer. e incorporation of manganese and cobalt oxides in the composition of the surface layers was confirmed by the results of X-ray structural analysis. e rational modes of aluminum alloys PEO treatment were substantiated to obtain coatings with manganese and cobalt contents up to 25-40 at.%. Formed oxide systems have a developed surface and high adhesion to the base metal and show an increased corrosion resistance and catalytic activity. is allows us to view them as promising materials for air-and watercleaning technologies and internal combustion engine waste gas purification systems.

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“…Electrochemical technologies are widely employed for the modification of surfaces of metals and alloys by forming coatings with different compositions and purposes [4,9,10].…”

Section: Features Of Peo Treatment Aluminum Andmentioning

confidence: 99%

Features of Plasma Electrolytic Formation of Manganese- and Cobalt-Containing Composites on Aluminum Alloys

Karakurkchi

Сахненко

Ved

et al. 2019

Advances in Materials Science and Engineering

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“…Of practical interest are studies of the authors of [28,29] on the electrosynthesis of the ternary Fe-Mo-W alloys with improved physical-mechanical and anticorrosion properties for the strengthening of parts of machines.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Research into influence of the electrolysis modes on the composition of galvanic Fe-Co-Mo coatings

Yermolenko

Ved

Karakurkchi

et al. 2017

EEJET

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“…8) позволяет сде-лать вывод, что покрытия имеют размер зерен от 70…100 нм до 0,2…0,5 мкм. Поверхность сплавов Fe-Mo и Fe-Mo-W характеризует-ся наличием агломератов сферических зерен нанометрового диапазона, что также является отраже-нием аморфной структуры материала [26]. По результатам экспериментальных исследований установлено, что покрытия сплавом железа с молибде-ном и вольфрамом, независимо от условий и параметров осаждения, имеют высокую коррозионную стойкость в агрессивных средах различной кислотности (рН 3,0; 7,0; 10,0) -k h < 0,04 мм/год (рис.…”

Section: Issn 2226-3780unclassified

“…Торможение коррозионного процесса в щелочной среде происходит благодаря формированию на поверхности сплавов не-растворимых гидроксидов железа, затрудняющих доступ деполяризатора. Однако коррозионная стойкость зна-чительно меньше, чем в нейтральной среде, что объяс-няется химическим растворением кислотных оксидов легирующих компонентов [27,28].…”

Section: Issn 2226-3780unclassified

“…10) и температурном воздействии. Кроме того, для всех режимов формирования поверх-ностных структур микротвердость тернарных сплавов превосходит бинарные благодаря присутствию воль-фрама в составе покрытия [5,28].…”

Section: Issn 2226-3780unclassified

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A study of formation peculiarities and properties of iron coatings with refractory metals on gray cast iron SCH18

Каракуркчи

2017

TAPR

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Functional Properties of Fe−Mo and Fe−Mo−W Galvanic Alloys

Cited by 23 publications

References 6 publications

Features of Plasma Electrolytic Formation of Manganese- and Cobalt-Containing Composites on Aluminum Alloys

Features of Plasma Electrolytic Formation of Manganese- and Cobalt-Containing Composites on Aluminum Alloys

Research into influence of the electrolysis modes on the composition of galvanic Fe-Co-Mo coatings

A study of formation peculiarities and properties of iron coatings with refractory metals on gray cast iron SCH18

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