Core and valence-band photoelectron spectroscopic studies of nickel interaction with etidronic acid

Liang, Yuanling; Paul, Dilip K.; Sherwood, Peter M. A.

doi:10.1021/cm00034a028

Cited by 9 publications

(16 citation statements)

References 4 publications

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“…A low energy flood gun was appropriately used for sample charging, operated at 280 eV and 2.1 mA. The energy scale of the spectrometer was calibrated [19] by using an argon-ion etched copper plane and the spectra were referenced using the most intense hydrocarbon C1s photoelectron peak taken at 284.6 eV.…”

Section: Surface Analyses and Characterizationmentioning

confidence: 99%

Influence of phytic acid on the corrosion behavior of iron under acidic and neutral conditions

Gao

Zhao

et al. 2014

Electrochimica Acta

108

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Section: Surface Analyses and Characterizationmentioning

confidence: 99%

Influence of phytic acid on the corrosion behavior of iron under acidic and neutral conditions

Gao

Zhao

et al. 2014

Electrochimica Acta

108

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“…The valence band region shows the O2s region at around 25.4 eV and a low binding region that shows a number of features. This low binding energy region is very sensitive to the type of phosphorus‐oxygen compound with doublet features in the region between 10 and 16 eV binding energy characteristic of energy levels with phosphorus and oxygen character. The width and separation of these energy levels varies with the phosphorus‐oxygen compound with higher symmetry species such as the orthophosphate ion having narrower features than lower symmetry species such as the etidronate ion.…”

Section: Resultsmentioning

confidence: 99%

“…The P2p region can be fitted to a single P‐O feature. The O1s region shows one feature at 534.17 eV due to oxygen in the etidronate and another feature at 536.15 eV due to absorbed water. In the O1s region, the ratio of phosphate and absorbed water is 43:3, which suggests that nearly all the oxygen comes from the oxygen in the etidronate.…”

Section: Resultsmentioning

confidence: 99%

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Photoelectron spectroscopic studies of the formation of hydroxyapatite films on 316L stainless steel pretreated with etidronic acid

Gao

Sherwood

2012

Surface & Interface Analysis

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The valence band and core‐level X‐ray photoelectron spectroscopy was used to probe hydroxyapatite films formed on the surface of stainless steel. These films formed on steel may find application in medical implants. The key to the successful adhesion of the hydroxyapatite films is shown to be the initial formation of a thin, oxide‐free etidronate film on the metal. It was not found possible to prepare the hydroxyapatite films directly on the metal surfaces. Since hydroxyapatite is a key component of bone and teeth, it is likely that the coated metals will have desirable biocompatible properties. The hydroxyapatite film was exposed to air, water, and 1M sodium chloride solution as representative components of the environment of the film in the human body, and these exposures led to no detectable decomposition of the film. The thin hydroxyapatite and etidronate film on the metal show differential charging effects that caused a doubling of the peaks in some core level spectra. The valence band spectra proved especially valuable in the identification of the surface chemistry of the films, and these spectra were interpreted by comparing the experimental spectra with spectra calculated using band structure calculations which showed good agreement with experiment. The calculated spectrum of etidronic acid was found to be significantly different to that of etidronate. Copyright © 2012 John Wiley & Sons, Ltd.

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“…2,10 and the other method, referred to as the "bench method" involving abrasion under a deoxygenated solution of the acid. 13 Thus, exposure of the film to 1M sodium chloride solution caused a thickening of the polymer film formed on nickel. Earlier studies of the surface chemistry of etidronic acid and etidronates have shown that the surface film formed, and the protective properties of this film, depend upon the substrate material.…”

Section: Introductionmentioning

confidence: 97%

Investigation of thin-oxide-free protective coatings on chromium and 316L stainless steel formed by treatment with etidronic acid

Johnson

Sherwood

2008

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

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Thin oxide-free phosphate films of composition formed on the surface of vanadium metal and characterized by xray photoelectron spectroscopyIn this article, the authors report how thin ͑10 nm or less͒ oxide-free phosphorus containing films can be formed on chromium and stainless steel on treatment with an organophosphorus acid ͑etidronic acid͒ using an anaerobic cell and a "bench" treatment. Core level and valence band x-ray photoelectron spectroscopy were used to study the films formed. Compositional variations were interpreted through the use of band structure and X-alpha calculations. The chromium study indicates that the etidronate at least partially decomposed to form phosphate. Some phosphide was observed for the bench treatment. Polished 316 L chromium containing stainless steel treated in 3M etidronic acid formed a thin phosphate containing film when using the bench treatment, but a film characteristic of etidronate when the anaerobic cell was used. Film changes during air exposure and exposure to 1M sodium chloride solution showed decomposition, the most resistant film being that of the etidronate on stainless steel. This thin etidronate film result shows that oxide-free etidronate films can be formed on stainless steel and these films have corrosion inhibition properties, which may find application in implant fabrication.

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Core and valence-band photoelectron spectroscopic studies of nickel interaction with etidronic acid

Cited by 9 publications

References 4 publications

Influence of phytic acid on the corrosion behavior of iron under acidic and neutral conditions

Influence of phytic acid on the corrosion behavior of iron under acidic and neutral conditions

Photoelectron spectroscopic studies of the formation of hydroxyapatite films on 316L stainless steel pretreated with etidronic acid

Investigation of thin-oxide-free protective coatings on chromium and 316L stainless steel formed by treatment with etidronic acid

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