Corrosion resistance of heat-treated Ni-W alloy coatings
Popczyk M., Kubisztal J., Swinarew A. S., Vashhkevich Z., Stanula A., Knechtle B.
Materials
Vol.13, Issue5, Num.1172
Опубликовано: 2020
Тип ресурса: Статья
Аннотация:
The paper presents research on evaluation of corrosion resistance of Ni-W alloy coatings subjected to heat treatment. The corrosion resistance was tested in 5[%] NaCl solution by the use of potentiodynamic polarization technique and electrochemical impedance spectroscopy. Characteristics of the Ni-W coatings after heat treatment were carried out using scanning electron microscopy, scanning Kelvin probe technique and X-ray diffraction. Suggested reasons for the improvement of properties of the heat treated Ni-W coating, obtained at the lowest current density value (125 mA•cm-2), are the highest tungsten content (c.a. 25 at. [%]) as well as the smallest and the most homogeneous electrochemically active surface area. © 2020 by the authors.
Ключевые слова:
Corrosion resistance; Heat treatment; Ni-W alloy coating
After-heat treatment; Binary alloys; Corrosion resistance; Corrosion resistant alloys; Electrochemical corrosion; Electrochemical impedance spectroscopy; Heat resistance; Heat treatment; Metal cladding; Nickel alloys; Scanning electron microscopy; Sodium chloride; Tungsten alloys; Electrochemically active surface areas; NaCl solution; Ni-W alloy; Ni-W coatings; Potentiodynamic polarization technique; Scanning electrons; Tungsten content; Corrosion resistant coatings
Язык текста: Английский
ISSN: 1996-1944
Popczyk M.
Kubisztal J.
Swinarew A. S.
Vashhkevich Z. Zbignev 1970-
Stanula A.
Knechtle B.
Попcзyк М.
Кубисзтал Й.
Сwинареw А. С.
Ващкевич З. Збигнев 1970-
Станула А.
Кнечтле Б.
Corrosion resistance of heat-treated Ni-W alloy coatings
Текст визуальный непосредственный
Materials
MDPI AG
Vol.13, Issue5 Num.1172
2020
Статья
Corrosion resistance Heat treatment Ni-W alloy coating
After-heat treatment Binary alloys Corrosion resistance Corrosion resistant alloys Electrochemical corrosion Electrochemical impedance spectroscopy Heat resistance Heat treatment Metal cladding Nickel alloys Scanning electron microscopy Sodium chloride Tungsten alloys Electrochemically active surface areas NaCl solution Ni-W alloy Ni-W coatings Potentiodynamic polarization technique Scanning electrons Tungsten content Corrosion resistant coatings
The paper presents research on evaluation of corrosion resistance of Ni-W alloy coatings subjected to heat treatment. The corrosion resistance was tested in 5[%] NaCl solution by the use of potentiodynamic polarization technique and electrochemical impedance spectroscopy. Characteristics of the Ni-W coatings after heat treatment were carried out using scanning electron microscopy, scanning Kelvin probe technique and X-ray diffraction. Suggested reasons for the improvement of properties of the heat treated Ni-W coating, obtained at the lowest current density value (125 mA•cm-2), are the highest tungsten content (c.a. 25 at. [%]) as well as the smallest and the most homogeneous electrochemically active surface area. © 2020 by the authors.