نتایج جستجو برای: pulse electrodeposition

تعداد نتایج: 94286  

Journal: :Crystals 2023

Ni–Co–P alloy coatings were successfully fabricated by jet electrodeposition with varying pulse frequencies and duty cycles in order to prolong the longevity of steel C1045 substrates. The results showed that microstructures properties samples significantly affected cycles. All exhibited a face-centered cubic (FCC) structure. Additionally, average grain size reached 20.6 nm. microhardness was o...

2017
Shuzhen Jiang Zhongning Guo Guixian Liu Glenn Kwabena Gyimah Xiaoying Li Hanshan Dong

Inspired by some typical plants such as lotus leaves, superhydrophobic surfaces are commonly prepared by a combination of low surface energy materials and hierarchical micro/nano structures. In this work, superhydrophobic surfaces on copper substrates were prepared by a rapid, facile one-step pulse electrodepositing process, with different duty ratios in an electrolyte containing lanthanum chlo...

Journal: :Journal of Asian Ceramic Societies 2021

Nickel–Tungsten–Titanium carbide (Ni–W–TiC) coatings were produced by pulse electrodeposition from a Ni–W electrolyte containing TiC particles. The effects of concentration in the on morphology, crystallite size, microstrain, mechanical, tribology and electrochemical properties reinforced co-depositions investigated. highest hardness 8.3 GPa modulus elasticity 207 observed case coating at 15 g/...

2006
Stanko R. Brankovic XiaoMin Yang Mike Seigler

Pulse deposition of 2.4 T Co37Fe63 alloy in photoresist features with 40 nm critical dimension and high aspect ratio is presented. The design of the pulse deposition parameters is described in terms of the transport limitations through the diffusion layer, electrochemical interface stability with respect to Fe(OH)3 precipitation, and the optimum conditions for additive (Saccharin) adsorption. T...

2013
GVOZDEN TASIĆ VLADIMIR JOVIĆ

The electrodeposition of Ni-MoO2 composite coatings is a specific process taking place under defined hydrodynamic conditions. In this work the influence of hydrodynamics, current density, and MoO2 concentration on the electrodeposition of Ni-MoO2 coatings from a suspension of MoO2 particles in a Watt’s type bath were investigated by comparison of their polarization characteristics for the hydro...

2009
S. R. Brankovic J. George D. Litvinov

The electrodeposition of soft, high magnetic moment alloys has become the critical fabrication step in manufacturing of magnetic recording heads. The need for ultimately high magnetic moment alloys (2.4 T CoFe) and the electrodeposition process capable of delivering magnetic structures with dimension in the range of several tens of nanometers are the new tasks that have to be addressed if the f...

Journal: :Journal of the American Chemical Society 2009
Yogesh Surendranath Mircea Dinca Daniel G Nocera

Electrolysis of Co(2+) in phosphate, methylphosphonate, and borate electrolytes effects the electrodeposition of an amorphous highly active water oxidation catalyst as a thin film on an inert anode. Electrodeposition of a catalytically competent species immediately follows oxidation of Co(2+) to Co(3+) in solution. Methylphosphonate and borate electrolytes support catalyst activity comparable t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده مواد 1389

در این تحقیق پوشش های کامپوزیتی ni – bn ، ni – b4c و ni – bn – b4c به روش آبکاری الکتریکی بر روی زیر لایه مس اعمال و خواص آن مورد بررسی قرار گرفته است. در این راستا پوشش های کامپوزیتی ni – bn و ni – b4c حاوی درصد های مختلفی پودر bn و b4c تولید و خواص آنها با یکدیگر مقایسه شد. به منظور ایجاد شرایط بهینه پراکندگی ذرات در محلول آبکاری، با استفاده از دستگاه zetasizer پتانسیل زتای محلول ها مورد بررس...

Journal: :Coatings 2022

Coating technology is decisively important for metallization of ceramic materials and metal sealing technology. Previous studies have shown that the network-like structure after penetration molten aluminum can significantly improve strength joint components. However, direct coating method limited by shape substrate. To obtain a dense film on surface B4C, in this study, was deposited pulse elect...

2012
C. A. Loto

Electrodeposition of zinc on mild steel in acid chloride solution using as additive, different concentrations of ananas comosus (pineapple) juice extracts, was investigated. Different additive concentrations, plating time, and constant pH conditions were used for the experiments. The electrodeposition of zinc on mild steel was performed using a DC – supply. The surface of the plated steel was e...

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