Explanipedia

Abrasion resistance of a Nb3Sn magnetron-sputtered coating on copper substrates for radio frequency superconducting cavities Open

S. Aliasghari, Egemen Avcu, P. Skeldon, Řeža Valizadeh, B. Mingo · 2023

Materials science

The paper presents the first study of the abrasion resistance and degradation processes of magnetron-sputtered Nb3Sn coatings on electropolished (EP) or chemical polished (CP) copper substrates. The coating-substrate system is of interest …

Issue Information Open

Herman Terryn, Paul Trevorrow, Zoe Mills, Carol Mcnelis, Patricia Mara , et al. · 2019

Chemistry

No abstract is available for this article.

Communication—Formation of a Superconducting MgB<sub>2</sub>-Containing Coating on Niobium by Plasma Electrolytic Oxidation Open

S. Aliasghari, P. Skeldon, Xiaorong Zhou, R. Valizadeh, Tobias Junginger , et al. · 2019

Materials science Physics Chemistry

The feasibility of generating superconducting coatings on niobium using plasma electrolytic oxidation (PEO) is demonstrated. A silicate-phosphate electrolyte was employed containing MgB2 particles. The coatings were examined by scanning el…

Anodic film growth and silver enrichment during anodizing of an Mg-0.6 at.% Ag alloy in fluoride-containing organic electrolytes Open

A. Němcová, Y. Li, Ivo Kuběna, I. Vickridge, J.-J. Ganem , et al. · 2018

Materials science Chemistry Engineering

International audience

Effect of an Fe(II)-modified trivalent chromium conversion process on Cr(VI) formation during coating of AA 2024 alloy Open

Jiantao Qi, B. Zhang, Z. Wang, Yongqing Li, P. Skeldon , et al. · 2018

Materials science Chemistry Physics

A trivalent chromium conversion coating formed in an Fe(II)-containing solution on AA2024 alloy has been investigated by high resolution analytical electron microscopy, ion beam analysis, Raman spectroscopy and electrochemical tests. It is…

Vanadate post-treatments of anodised aluminium and AA 2024 T3 alloy for corrosion protection Open

S. Liu, G.E. Thompson, P. Skeldon · 2018

Materials science Chemistry Mathematics

Porous anodic films formed on aluminium in sulphuric acid were post-treated using various double-dip processes that incorporate a sparingly-soluble, vanadate, corrosion inhibitor. The processes were optimised by investigating the effects o…

An Optimized Trivalent Chromium Conversion Coating Process for AA2024-T351 Alloy Open

Jiantao Qi, Lei Gao, Yongqing Li, Z. Wang, G. E. Thompson , et al. · 2017

Materials science Chemistry Engineering

In this work, a trivalent chromium conversion coating applied on AA2024-T351 alloy has been optimized for corrosion protection in sodium chloride solutions. Scanning electron microscopy, energy dispersive X-ray spectroscopy and electrochem…

Influence of Fluorozirconic Acid on Sulfuric Acid Anodizing of Aluminum Open

R. Elaish, M. Curioni, K R Gowers, A. Kasuga, H. Habazaki , et al. · 2017

Materials science Chemistry

The effects of additions of fluorozirconic acid to sulphuric acid on the anodizing behaviour of aluminium have been investigated under a constant voltage at temperatures of 0 and 20 °C. The fluoroacid increased the rate of film growth, wit…

Gravimetric Measurement of Oxygen Evolution during Anodizing of Aluminum Alloys Open

J.M. Torrescano-Alvarez, M. Curioni, P. Skeldon · 2017

Materials science Chemistry Physics

A gravimetric method based on changes in buoyancy force of a submerged gas-collecting container has been optimized to measure the evolution of oxygen during anodizing of an aluminium alloy. Previously, the gravimetric method has been used …

Influence of Copper on Trivalent Chromium Conversion Coating Formation on Aluminum Open

Jiantao Qi, Yang Miao, Z. Wang, Yongqing Li, Xun Zhang , et al. · 2017

Chemistry Materials science Physics

In the present work, modified copper-containing trivalent chromium conversion (TCC) coating processes for aluminum were investigated. The copper addition to the TCC bath was made for the purposes of reducing the generation of hydrogen pero…

Enriched alloy layer on an Al-Cu alloy studied by cyclic voltammetry Open

S.J. Garcia-Vergara, C E Blanco Pinzon, P. Skeldon · 2017

Materials science Chemistry

The behaviour of enriched Al-0.7at.%Cu alloy is investigated using cyclic voltammetry. Enriched alloy layers at the interface between the alloy/oxide film were developed by alkaline etching at 5mAcm-2 in 0.1M sodium hydroxide solution at 2…

Effect of low levels of sulphate on the current density and film morphology during anodizing of aluminium in chromic acid Open

D. Elabar, Teruo Hashimoto, Jiantao Qi, P. Skeldon, G. E. Thompson · 2016

Materials science Chemistry Biology

Previous work has shown that a low level of sulphate impurity in chromic acid can significantly change the growth rate and the morphology of porous anodic films formed on aluminium at a constant voltage. The changes were associated with in…

Influence of coating morphology on adhesive bonding of titanium pre-treated by plasma electrolytic oxidation Open

S. Aliasghari, A. Němcová, P. Skeldon, G.E. Thompson · 2016

Materials science Chemistry Engineering

The effect of plasma electrolytic oxidation (PEO) pre-treatments on the adhesive bonding of titanium is investigated using lap-shear tests. Two pre-treatments are compared, using aluminate-phosphate and silicate-phosphate electrolytes resp…

Characterization of 2024 T3 Aluminum Alloy after Rare Earth Desmutting Open

I. V. Gordovskaya, M. Curioni, Teruo Hashimoto, John Walton, G. E. Thompson , et al. · 2016

Materials science Chemistry Engineering

The effect of CeCl3 and CeCl3 + H2O2 additions to a nitric acid solution for desmutting of 2024 T3 aluminum alloy has been investigated using scanning electron microscopy and energy dispersive X-ray analysis, potentiodynamic polarization a…

Formation of a Trivalent Chromium Conversion Coating on AA2024-T351 Alloy Open

Jiantao Qi, Teruo Hashimoto, John Walton, Xiaorong Zhou, P. Skeldon , et al. · 2015

Materials science Chemistry Engineering

The formation of a trivalent chromium conversion coating on AA2024-T351 aluminum alloy has been studied using electron microscopy, scanning Kelvin probe force microscopy, ion beam analysis and X-ray photoelectron spectroscopy (XPS). The co…

Trivalent chromium conversion coating formation on aluminium Open

Jiantao Qi, Teruo Hashimoto, John R. Walton, Xiaorong Zhou, P. Skeldon , et al. · 2015

Materials science Chemistry Physics

The formation of a trivalent conversion coating on aluminium has been investigated using analytical electron microscopy, atomic force microscopy, ion beam analysis, glow discharge optical emission spectroscopy, Raman spectroscopy and X-ray…

Effect of sulphate impurity in chromic acid anodizing of aluminium Open

D. Elabar, A. Němcová, Teruo Hashimoto, P. Skeldon, G.E. Thompson · 2015

Materials science Chemistry Physics

The formation of porous anodic alumina during potentiostatic anodizing of aluminium for times up to 900 s has been investigated using two grades of chromic oxide reagent. The anodic films were examined by ion beam analysis and scanning and…

Effect of current density and behaviour of second phases in anodizing of a Mg-Zn-RE alloy in a fluoride/glycerol/water electrolyte Open

A. Němcová, Ivo Kuběna, Miroslav Šmíd, H. Habazaki, P. Skeldon , et al. · 2015

Materials science Chemistry

Anodizing of a Mg-Zn-RE alloy was carried out at constant current densities from 0.1 to 10 mA cm−2 in a fluoride/glycerol/water electrolyte. Rutherford backscattering spectroscopy, nuclear reaction analysis and analytical transmission elec…

Formation of grooved and porous coatings on titanium by plasma electrolytic oxidation in H2SO4/H3PO4 electrolytes and effects of coating morphology on adhesive bonding Open

Oscar Galvis, David Quintero, Juan G. Castaño, Hongfang Liu, G.E. Thompson , et al. · 2015

Materials science Chemistry Biology

The paper reports a change in the morphology of coatings formed galvanostatically on titanium by plasma electrolytic oxidation in phosphoric/sulfuric acid mixtures, and investigated using scanning electron microscopy, X-ray diffraction, an…

Scanning transmission electron microscopy technique for morphology analysis of anodic oxide film formed on titanium Open

Z. Liu, Teruo Hashimoto, I-Ling Tsai, G.E. Thompson, P. Skeldon , et al. · 2015

Materials science Chemistry Physics

The application of scanning transmission electron microscopy for morphological observation of anodic oxide films formed on titanium has been successfully explored. Important details of anodic films are readily recorded from high quality im…

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