Poly(methyl methacrylate)-silica-calcium phosphate coatings for the protection of Ti6Al4V alloy

Uvida, Mayara Carla; Pulcinelli, Sandra Helena; Santilli, Celso Valentim; Hammer, Peter

doi:10.1007/s10971-023-06111-z

Cited by 2 publications

(2 citation statements)

References 39 publications

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“…Based on the FTIR and SEM/EDS analyses, the mechanism of formation of the PEHA-SS coating was postulated (Figure 9). The structure is aligned with other PMMA-based hybrid sol-gel coatings [24,29,45]. The thickness of the siloxane coatings was measured using a 3D profilometer (Figure 8c,d).…”

Section: Coating Surface Characterisationmentioning

confidence: 79%

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Durable Polyacrylic/Siloxane-Silica Coating for the Protection of Cast AlSi7Mg0.3 Alloy against Corrosion in Chloride Solution

Rodič,

Kapun,

Milošev

2023

Polymers

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This study presented a novel corrosion protective coating based on polyacrylic/siloxane-silica (PEHA-SS) deposited on lightweight cast aluminium alloy AlSi7Mg0.3. The synthesis of PEHA-SS comprises organic monomer 2-ethylhexyl acrylate and organically modified silane 3-(trimethoxysilyl)propyl methacrylate as well as an inorganic silane, tetraethyl orthosilicate. The steps during the synthesis process were monitored using real-time infrared spectroscopy. The coating deposited onto the AlSi7Mg0.3 surface was characterised using various techniques, including infrared spectroscopy, 3D contact profilometry, and scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy. The corrosion resistance of the coated alloy in sodium chloride solutions was evaluated using electrochemical impedance spectroscopy. The accelerated testing of the uncoated and coated sample was performed using the Machu test. This novel, nine micrometres thick PEHA-SS coating achieved durable corrosion (barrier) protection for the AlSi7Mg0.3 alloy in 0.1 M NaCl during the first four months of immersion or under accelerated corrosion conditions in a Machu chamber containing NaCl, acetic acid, and hydrogen peroxide at 37 °C.

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Section: Coating Surface Characterisationmentioning

confidence: 79%

“…Commonly siloxane-silica coatings were mainly tested on steel [23,29,[41][42][43][44], titanium alloys [45], or wrought aluminium alloys [17,24,25,27]. There is a lack of studies on cast aluminium alloys.…”

Section: Introductionmentioning

confidence: 99%

Durable Polyacrylic/Siloxane-Silica Coating for the Protection of Cast AlSi7Mg0.3 Alloy against Corrosion in Chloride Solution

Rodič,

Kapun,

Milošev

2023

Polymers

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Sonochemistry-assisted sol-gel synthesis of Hydroxyapatite

Cruz-Ávila,

Hernández-Padrón,

Meneses

2024

Preprint

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Sonochemistry was employed to assist the in-situ synthesis hydroxyapatite by sol-gel process aqueous using Ca(NO3)2·4H2O and (NH4)H2PO4 (HApS). The synthesis by assisted sonochemistry reduced the reaction time from 3 h to 11 min. The formation of HApS, hidroxiapatite (HAp) and other compounds during heat treatment at 0, 120, 350 and 700 0C were identified and characterized by FTIR, Raman Dispersive, X-ray and SEM. The spectroscopy characterization showed that chemical bonds in the HApS are the same position that HAp on the main phosphate group peaks appeared at 1098, 1034, 962, 604 and 562 cm− 1 for IR while at 796 cm− 1 for Raman, which was attributed to the asymmetric stretching mode of PO43−. By means of X-ray diffraction, the hexagonal structure of HApS obtained by sonochemistry could be verified. The morphology characterized by SEM showed the similar structure satisfying the porosity and needles of the scaffold bone. This study compared the formation hydroxyapatite with and without sonochemistry.

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Poly(methyl methacrylate)-silica-calcium phosphate coatings for the protection of Ti6Al4V alloy

Cited by 2 publications

References 39 publications

Durable Polyacrylic/Siloxane-Silica Coating for the Protection of Cast AlSi7Mg0.3 Alloy against Corrosion in Chloride Solution

Durable Polyacrylic/Siloxane-Silica Coating for the Protection of Cast AlSi7Mg0.3 Alloy against Corrosion in Chloride Solution

Sonochemistry-assisted sol-gel synthesis of Hydroxyapatite

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