Ultrathin organic layers for corrosion protection

Maege, Iris; Jaehne, Evelin; Henke, Axel; Adler, Hans‐Juergen P.; Bram, Christian; Jung, Christian; Stratmann, M.

doi:10.1002/masy.19981260104

Cited by 69 publications

(98 citation statements)

References 13 publications

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“…The fact that the υP-OH features have disappeared from the 2725-1600 cm −1 region and the very low intensity at 1230 cm −1 typical of the P O vibration, could possibly indicate that the binding is mostly tridentate. This is corroborated with the band between 1200 and 1000 cm −1 , which in the context of the present work, can be attributed to the R-PO 3 2− symmetric and asymmetric stretches.…”

Section: Resultssupporting

confidence: 92%

“…[18] The fact that no feature of the S 2p 3/2 component is detected at higher energies (e.g. S 2p 3/2 for sulfinates -SO 2 − and sulfonates -SO 3 − , typically found at 165.5 and 168.0 eV) suggests that, after the grafting process, most sulfur atoms located on the surface are involved in C-S-C bonds or, at least, are not bonded to oxygen atoms.…”

Section: Resultsmentioning

confidence: 99%

“…Their most common structure is Xspacer-Y, where X is a head group to be grafted to the metallic oxide surfaces, MO x (M = Al, Ti, Cu, and alloys). Frequently used anchoring groups X on such surfaces are trimethoxysilane (-Si(OCH 3 ) 3 ), carboxylic (-COOH), and phosphonic (-PO(OH) 2 ) acids. The terminal or tail function Y is chosen according to the desired application (lubrication, antifouling, antigraffitis .…”

Section: Introductionmentioning

confidence: 99%

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Anchoring of sulfur‐containing alkylphosphonic and semifluorinated alkylphosphonic molecules on a polycrystalline aluminum substrate

Fonder

Delhalle

Essahli

et al. 2008

Surface & Interface Analysis

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, has been compared with CH 3 -(CH 2 ) 15 -PO(OH) 2 . The reaction of the phosphonic head groups with the hydroxyls at the alumina surface to form phosphonates was studied with X-ray photoelectron spectroscopy (XPS) and polarization modulation infrared reflection-absorption spectroscopy (PM-IRRAS). Barrier effects of the resulting layers was assessed by electrochemical polarization curves. With the conditions used in the present work for the self-assembly reaction, it appears that the sulfur-containing molecules do not perform as well as CH 3 -(CH 2 ) 15 -PO(OH) 2 in terms of film quality. Questions are raised about the possibility that the sulfur-containing molecules could undergo cleavage during surface modification.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Anchoring of sulfur‐containing alkylphosphonic and semifluorinated alkylphosphonic molecules on a polycrystalline aluminum substrate

Fonder

Delhalle

Essahli

et al. 2008

Surface & Interface Analysis

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“…Protein adsorption and cell adhesion are reduced on the phosphorylcholine-assembled surfaces. With the intention of producing well-controlled surfaces on oxide, chlorosilanes [204], hydroxamic acid [205], carboxylic acids [206], and phosphoric and phosphonic acids [207][208][209][210] have been proposed as SAMs molecules.…”

Section: Biochemical Modification Of Titanium and Titanium Alloysmentioning

confidence: 99%

Surface modification of titanium, titanium alloys, and related materials for biomedical applications

Liu

Chu

Ding

2004

Materials Science and Engineering: R: Reports

2,947

1,450

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Titanium and titanium alloys are widely used in biomedical devices and components, especially as hard tissue replacements as well as in cardiac and cardiovascular applications, because of their desirable properties, such as relatively low modulus, good fatigue strength, formability, machinability, corrosion resistance, and biocompatibility. However, titanium and its alloys cannot meet all of the clinical requirements. Therefore, in order to improve the biological, chemical, and mechanical properties, surface modification is often performed. This article reviews the various surface modification technologies pertaining to titanium and titanium alloys including mechanical treatment, thermal spraying, sol-gel, chemical and electrochemical treatment, and ion implantation from the perspective of biomedical engineering. Recent work has shown that the wear resistance, corrosion resistance, and biological properties of titanium and titanium alloys can be improved selectively using the appropriate surface treatment techniques while the desirable bulk attributes of the materials are retained. The proper surface treatment expands the use of titanium and titanium alloys in the biomedical fields. Some of the recent applications are also discussed in this paper. #

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“…[38] and Thissen et al [39] described the coordination of phosphonic acid onto aluminum surface through the formation of Al-O-P bonds.…”

Section: Evaluation Of Edtpo Incorporation Into 3v Matrixmentioning

confidence: 99%

Improving the corrosion performance of hybrid sol–gel matrix by modification with phosphonic acid

Dalmoro

Santos

Baibich

et al. 2015

Progress in Organic Coatings

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Sol-gel films were prepared using different ratios of two silica precursors, vinyltrimethoxysilane (VTMS) and tetraethylorthosilicate (TEOS), targeting the anticorrosion treatment of aluminum alloy 2024-T3. The electrochemical behavior of the alloy coated with such films, which was studied in a 0.05 mol L -1 NaCl solution, revealed that the VTMS/TEOS ratio drastically affects the anticorrosion performance. Electrochemical impedance spectroscopy (EIS) results provided evidences that the best anticorrosive response occurs with the films prepared from 50% v/v ethanol, 46% v/v water, 3% v/v VTMS and 1% v/v TEOS. Moreover, the effects of the addition of ethylenediamine tetra(methylene phosphonic acid) (EDTPO) to a hybrid sol-gel matrix were examined. The corrosion resistance was considerably improved when the concentration of added phosphonic acid was 3.7510 -5 mol·L -1 . Scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy analyses revealed that EDTPO-containing films provide a more uniform coverage. Results evidenced the formation of Si-O-Al linkages in the VTMS/TEOS and VTMS/TEOS/EDTPO systems and that the VTMS/TEOS/EDTPO system contained P-O-Al linkages. The P-O-Al bonds, combined with the silica network action, may be responsible for the good anticorrosive behavior of the VTMS/TEOS/EDTPO films.

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Ultrathin organic layers for corrosion protection

Cited by 69 publications

References 13 publications

Anchoring of sulfur‐containing alkylphosphonic and semifluorinated alkylphosphonic molecules on a polycrystalline aluminum substrate

Anchoring of sulfur‐containing alkylphosphonic and semifluorinated alkylphosphonic molecules on a polycrystalline aluminum substrate

Surface modification of titanium, titanium alloys, and related materials for biomedical applications

Improving the corrosion performance of hybrid sol–gel matrix by modification with phosphonic acid

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