Results 1 to 10 of about 543 (102)

Electrochemistry of active chromium, part III: Effects of temperature [PDF]

Journal of the Serbian Chemical Society, 2003
It was shown that the temperature in the range 20 – 65 ºC has considerable effects on the electrochemical anodic dissolution of chromium in the active potential range as well as on the electrochemical hydrogen evolution reactions on bare and oxide ...
Popić Jovan P., Dražić Dragutin M.
doaj   +3 more sources

Effect of microstructure on the electrochemical dissolution behaviour of Hastelloy® X superalloy processed by selective laser melting and heat treatments

Materials & Design, 2021
As a proven and highly efficient processing technique, electrochemical machining (ECM) is used for machining difficult-to-cut Ni-based superalloys (such as Hastelloy® X [HX] fabricated via selective laser melting [SLM]) with complex shapes.
Yingyue Yin, Jianhua Zhang, Shengzhao Yang, Tong Liu, Quanquan Han, Zhenhua Zhang, Huanqing Yang   +6 more
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In situ study of hydrogen silsesquioxane dissolution rate in salty and electrochemical developers [PDF]

Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, 2011
In order to better characterize the development of the electron-beam resist hydrogen silsesquioxane (HSQ), the authors used a quartz crystal microbalance (QCM) to study its rate of dissolution in situ. The authors determined the effect of both salt concentration and applied electric potential on the development rate of HSQ.
Harry, K.J. (author), Strobel, S. (author), Yang, J.K.W. (author), Duan, H. (author), Berggren, K.K. (author)   +4 more
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Application of pulse current for dissolution of heat-resistant GS32-VI alloy

Тонкие химические технологии, 2021
Objectives. To identify the regularities of electrochemical processing of the heat-resistant GS32-VI alloy in a sulfuric acid electrolyte with a concentration of 100 g/dm3 under the action of a pulsed current in a pulsed mode.Methods.
O. V. Chernyshova, T. B. Yelemessov, D. V. Drobot   +2 more
doaj   +1 more source

Electrochemical Dissolution Behavior of Ti-48Al-2Nb-2Cr in NaNO3 and NaCl Electrolytes

International Journal of Electrochemical Science, 2020
Ti-48Al-2Nb-2Cr (TiAl4822) intermetallic material is an excellent lightweight and high-temperature alloy used in the aerospace industry. Electrochemical machining (ECM) is one of the most significant processing technologies for the manufacturing of TiAl ...
Hao Wang, Jia Liu, Dawei Gu, Di Zhu
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Chemical corrosion of metals and alloys

Zaštita Materijala, 2016
In this paper, phenomena of chemical corrosion of metals and alloys in electrolyte solutions are analyzed. It is shown that iron, chromium and other metals and alloys dissolve much faster than is the corrosion rate determined by electrochemical methods ...
Bore Jegdić, Jovan Popić, Biljana Bobić, Maja Stevanović   +3 more
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Electrochemical removal of pyrite scale using green formulations

Scientific Reports, 2021
Pyrite scale formation is a critical problem in the hydrocarbon production industry; it affects the flow of hydrocarbon within the reservoir and the surface facilities.
Musa Ahmed, Ibnelwaleed A. Hussein, Abdulmujeeb T. Onawole, Mohammed A. Saad, Mazen Khaled   +4 more
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Formation and Breakdown of Oxide Films in High-Rate Anodic Dissolution of Chromium–Nickel Steels in Electrolytes for Electrochemical Machining

Surface Engineering and Applied Electrochemistry, 2022
It is shown that, in high-rate pulsed galvanostatic anodic dissolution of type CSN17335 and AISI 304 chromium–nickel steels in electrolytes for electrochemical machining (ECM) (chloride, nitrate, and mixed chloride–nitrate solutions with a conductivity of 0.15 S/cm) using microsecond pulses with a duration of 20–2000 μs and current densities in the ...
Dikusar, A. I., Silkin, S. A.
openaire   +2 more sources

Improved methodology for calculating the processes of surface anodic dissolution of spark eroded recast layer at electrochemical machining with wire electrode

Trudy Odesskogo Politehničeskogo Universiteta, 2014
The wire electro discharge machining (WEDM) process produces surfaces that require some kind of finishing operation. The precision electrochemical machining is one of techniques used mainly to improve the steels’ appearance.
В. І. Осипенко, О. П. Плахотний, А. Ю. Денисенко   +2 more
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Electrochemical analysis of copper-EDTA-ammonia-gold thiosulfate dissolution system

Green Processing and Synthesis, 2023
Ethylenediaminetetraacetic acid disodium (EDTA) can form stable complexes with many metals. To improve the leaching rate of gold and the consumption rate of thiosulfate, EDTA and ammonia were combined with copper ions to form a copper-EDTA-ammonia ...
Xiang Peng-Zhi, Ye Guo-Hua
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