Electrodeposition of Ni-W-B amorphous alloys

Isaev, N. I.; Osteryoung, Janet

doi:10.1007/bf00242535

Cited by 13 publications

(7 citation statements)

References 13 publications

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“…Various Ni-W electrolytes have been tested in the past. [9][10][11][12][13][14][15][16][17] The galvanic bath proposed in this work contains nickel in a very low concentration and is mildly alkaline. The nickel drag-out and rinse water consumption are low, and the current efficiency is at least twice as good as with chromium͑IV͒ electrolytes.…”

mentioning

confidence: 99%

Nanocrystalline Ni–W for Wear-Resistant Coatings and Electroforming

Auerswald

Fecht

2010

J. Electrochem. Soc.

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Nanocrystalline wear-resistant Ni–W (42 wt % tungsten) layers have been electrodeposited on steel, aluminum, titanium alloys, and silicon wafers. The resulting microstructures and textures were characterized as a function of processing conditions. Measurements of Young’s modulus, hardness, coefficient of thermal expansion, internal stress, wear resistance, and thermal stability are presented. Possible applications of the material for wear-resistant coatings or for microsystems technology are outlined.

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confidence: 99%

Nanocrystalline Ni–W for Wear-Resistant Coatings and Electroforming

Auerswald

Fecht

2010

J. Electrochem. Soc.

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“…This may be attributed to that, on one hand, the electroless Ni-B deposition increased Ni content of the electrodeposit, while on the other hand W was originated from nickel induced codeposition and electrodeposition of nickel was diffusion controlled. 10,19,24 Since nickel ions at the solid/liquid interface are decreased for Ni-B electroless deposition W induced codeposition amounts will be reduced. The structures of Ni-W alloys were changed from crystal to nanocrystal 25 in the higher W content for the augment of lattice distortion.…”

Section: Electrodeposition Of Ni-w-b Alloymentioning

confidence: 99%

“…7 In Ni-W alloy electrodeposition most electrolyte solutions used citrate as complexing agent, and the others were mainly the aminosulfonic acid, tartrate, glucose and pyrophosphate. [8][9][10][11][12][13][14] An amorphous Ni-W-B coating could be electrodeposited [15][16][17][18][19] from Ni-W electrolyte solution containing boric compound such as borate or dimethylamine borane C 2 H 10 BN (DMAB) or hydroborate. Steffani and coworkers 15 indicated that the Ni-W-B alloy typically containing 40 wt% W and 1 wt% B was in an amorphous or partially amorphous structure, and could deposit comparatively favorably with chromium and electroless nickel deposits in wear and corrosion resistances, appearance and reflectivity.…”

Section: Introductionmentioning

confidence: 99%

Electrodeposition and Properties of an Amorphous Ni‐W‐B Alloy before and after Heat Treatment

Yang

Huang

et al. 2006

Chin. J. Chem.

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To strengthen the properties of Ni-W alloy, dimethylamine borane (DMAB) was added to an alloy Ni-W electrolyte solution and a ternary Ni-W-B alloy was electrodeposited. The electrodeposition, crystallographic structure, surface morphology, heat treatment and corrosion resistance, of the alloy were studied by DSC, XRD, SEM and electrochemical techniques. The results showed that the structure of the alloy was greatly affected by the cooperation of boron compound. DSC experiment combined with X-ray diffractometry indicated that the obtained Ni-W-B alloy was still in amorphous structure although W content in the alloy was decreased by the addition of DMAB. After heat treatment at 400 ℃ for 1 h, the microhardness was increased from 612 to 947 kg•mm -2 that was comparative to Cr coating. The appearance of the as-plated coating was in fine and slice grains and kept almost no change after heat treatment. In w＝0.03 NaCl solution the as-plated coating presented very good corrosion resistance. After the coating was heat-treated its corrosion resistance was enhanced.

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“…Only on the electrodes of WC, in a wide range of potentials, this phenomenon was not observed. From literature data concerning the detailed description of the HER on tungsten and tungsten carbide [4,6,30,31] it results that the system with the electrode investigated at equilibrium potential in above mentioned solutions is characterized by the same mechanism of the HER, independent on the kind of occuring Fe-group metal as a binder. It is concluded on the base of similar cathodic and anodic Tafel slope equal 100 and 120 mV dec -1 , respectively.…”

Section: Composite Electrode Materialsmentioning

confidence: 99%

Electrode Materials

Łosiewicz

Dercz

Popczyk

2015

SSP

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This review work was focused on conventional and modern electrodes which play an important role in electrochemical systems. Among many types of existing electrode materials, some of the most prominent materials from the conventional (metals and their alloys, graphite and mixed metal oxides) and the modern (amorphous, modified and composite) electrodes, have been outlined. What is also discussed is the recent intensive usability of nanocrystalline electrodes of better properties than their microcrystalline equivalents, and development trend of electrode materials.

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Electrodeposition of Ni-W-B amorphous alloys

Cited by 13 publications

References 13 publications

Nanocrystalline Ni–W for Wear-Resistant Coatings and Electroforming

Nanocrystalline Ni–W for Wear-Resistant Coatings and Electroforming

Electrodeposition and Properties of an Amorphous Ni‐W‐B Alloy before and after Heat Treatment

Electrode Materials

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